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- Add support for the Cirrus Logic CS42L43 Audio CODEC
- Fix-ups
- Make use of specific printk() format tags for various optimisations
- Kconfig / module modifications / tweaking
- Simplify obtaining resources (memory, device data) using unified API helpers
- Bunch of Device Tree additions, conversions and adaptions
- Convert a bunch of Regmap configurations to use the Maple Tree cache
- Ensure correct includes are present and remove some that are not required
- Remove superfluous code
- Reduce amount of cycles spent in critical sections
- Omit the use of redundant casts and if relevant replace with better ones
- Swap out raw_spin_{un}lock_irq{save,restore}() for spin_{un}lock_irq{save,restore}()
- Bug Fixes
- Repair theoretical deadlock situation
- Fix some link-time dependencies
- Use more appropriate datatype when casting
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Merge tag 'mfd-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull NFD updates from Lee Jones:
"New Drivers:
- Add support for the Cirrus Logic CS42L43 Audio CODEC
Fix-ups:
- Make use of specific printk() format tags for various optimisations
- Kconfig / module modifications / tweaking
- Simplify obtaining resources (memory, device data) using unified
API helpers
- Bunch of Device Tree additions, conversions and adaptions
- Convert a bunch of Regmap configurations to use the Maple Tree
cache
- Ensure correct includes are present and remove some that are not
required
- Remove superfluous code
- Reduce amount of cycles spent in critical sections
- Omit the use of redundant casts and if relevant replace with better
ones
- Swap out raw_spin_{un}lock_irq{save,restore}() for
spin_{un}lock_irq{save,restore}()
Bug Fixes:
- Repair theoretical deadlock situation
- Fix some link-time dependencies
- Use more appropriate datatype when casting"
* tag 'mfd-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (70 commits)
mfd: mc13xxx: Simplify device data fetching in probe()
mfd: rz-mtu3: Replace raw_spin_lock->spin_lock()
mfd: rz-mtu3: Reduce critical sections
mfd: mxs-lradc: Fix Wvoid-pointer-to-enum-cast warning
mfd: wm31x: Fix Wvoid-pointer-to-enum-cast warning
mfd: wm8994: Fix Wvoid-pointer-to-enum-cast warning
mfd: tc3589: Fix Wvoid-pointer-to-enum-cast warning
mfd: lp87565: Fix Wvoid-pointer-to-enum-cast warning
mfd: hi6421-pmic: Fix Wvoid-pointer-to-enum-cast warning
mfd: max77541: Fix Wvoid-pointer-to-enum-cast warning
mfd: max14577: Fix Wvoid-pointer-to-enum-cast warning
mfd: stmpe: Fix Wvoid-pointer-to-enum-cast warning
mfd: rn5t618: Remove redundant of_match_ptr()
mfd: lochnagar-i2c: Remove redundant of_match_ptr()
mfd: stpmic1: Remove redundant of_match_ptr()
mfd: act8945a: Remove redundant of_match_ptr()
mfd: rsmu_spi: Remove redundant of_match_ptr()
mfd: altera-a10sr: Remove redundant of_match_ptr()
mfd: rsmu_i2c: Remove redundant of_match_ptr()
mfd: tc3589x: Remove redundant of_match_ptr()
...
a lot of developers were on holidays (including myself) it was a good
timing to apply lots of cleanups which would normally cause merge
conflicts with other floating patches. Extra thanks go to Andi Shyti who
backed me up when I was on a four week hiatus. This is also the reason
that some patches were commited later than ideal.
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Merge tag 'i2c-for-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"I2C has mainly cleanups this time and a few driver improvements.
Because a lot of developers were on holidays (including myself) it was
a good timing to apply lots of cleanups which would normally cause
merge conflicts with other floating patches. Extra thanks go to Andi
Shyti who backed me up when I was on a four week hiatus. This is also
the reason that some patches were commited later than ideal"
* tag 'i2c-for-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (67 commits)
i2c: at91: Use dev_err_probe() instead of dev_err()
I2C: ali15x3: Do PCI error checks on own line
i2c: Make return value check more accurate and explicit for devm_pinctrl_get()
i2c: designware: Add support for recovery when GPIO need pinctrl
i2c: mlxcpld: Add support for extended transaction length
i2c: mlxcpld: Allow driver to run on ARM64 architecture
i2c: nforce2: Do PCI error check on own line
i2c: sis5595: Do PCI error checks on own line
i2c: qcom-cci: Fix error checking in cci_probe()
i2c: muxes: pca954x: Add regulator support
i2c: muxes: pca954x: Add MAX735x/MAX736x support
dt-bindings: i2c: Add Maxim MAX735x/MAX736x variants
dt-bindings: i2c: pca954x: Correct interrupt support
i2c: pnx: Use devm_platform_get_and_ioremap_resource()
i2c: pxa: Use devm_platform_get_and_ioremap_resource()
i2c: s3c2410: Use devm_platform_get_and_ioremap_resource()
i2c: sh_mobile: Use devm_platform_get_and_ioremap_resource()
i2c: st: Use devm_platform_get_and_ioremap_resource()
i2c: qcom-geni: Convert to devm_platform_ioremap_resource()
i2c: stm32f4: Use devm_platform_get_and_ioremap_resource()
...
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Merge tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Do not try to get the console lock when it is not need or useful in
panic()
- Replace the global console_suspended state by a per-console flag
- Export symbols needed for dumping the raw printk buffer in panic()
- Fix documentation of printf formats for integer types
- Moved Sergey Senozhatsky to the reviewer role
- Misc cleanups
* tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: export symbols for debug modules
lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix()
printk: ringbuffer: Fix truncating buffer size min_t cast
printk: Rename abandon_console_lock_in_panic() to other_cpu_in_panic()
printk: Add per-console suspended state
printk: Consolidate console deferred printing
printk: Do not take console lock for console_flush_on_panic()
printk: Keep non-panic-CPUs out of console lock
printk: Reduce console_unblank() usage in unsafe scenarios
kdb: Do not assume write() callback available
docs: printk-formats: Treat char as always unsigned
docs: printk-formats: Fix hex printing of signed values
MAINTAINERS: adjust printk/vsprintf entries
- Remove the OXNAS driver instead of adding a new one!
- A set of boring fixes, cleanups and improvements
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Merge tag 'timers-core-2023-09-04-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull clocksource/clockevent driver updates from Thomas Gleixner:
- Remove the OXNAS driver instead of adding a new one!
- A set of boring fixes, cleanups and improvements
* tag 'timers-core-2023-09-04-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Explicitly include correct DT includes
clocksource/drivers/sun5i: Convert to platform device driver
clocksource/drivers/sun5i: Remove pointless struct
clocksource/drivers/sun5i: Remove duplication of code and data
clocksource/drivers/loongson1: Set variable ls1x_timer_lock storage-class-specifier to static
clocksource/drivers/arm_arch_timer: Disable timer before programming CVAL
dt-bindings: timer: oxsemi,rps-timer: remove obsolete bindings
clocksource/drivers/timer-oxnas-rps: Remove obsolete timer driver
Fixes include:
. white space cleanup in dma code
. removal of unused pcibios_setup() code
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Merge tag 'm68knommu-for-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu updates from Greg Ungerer:
"Two changes, one a trivial white space clean up, the other removes the
unnecessary local pcibios_setup() code"
* tag 'm68knommu-for-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: coldfire: dma_timer: ERROR: "foo __init bar" should be "foo __init bar"
m68k/pci: Drop useless pcibios_setup()
- Drop 32-bit checksum implementation and re-use it from arch/x86
- String function cleanup
- Fixes for -Wmissing-variable-declarations and -Wmissing-prototypes builds
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Merge tag 'uml-for-linus-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Richard Weinberger:
- Drop 32-bit checksum implementation and re-use it from arch/x86
- String function cleanup
- Fixes for -Wmissing-variable-declarations and -Wmissing-prototypes
builds
* tag 'uml-for-linus-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
um: virt-pci: fix missing declaration warning
um: Refactor deprecated strncpy to memcpy
um: fix 3 instances of -Wmissing-prototypes
um: port_kern: fix -Wmissing-variable-declarations
uml: audio: fix -Wmissing-variable-declarations
um: vector: refactor deprecated strncpy
um: use obj-y to descend into arch/um/*/
um: Hard-code the result of 'uname -s'
um: Use the x86 checksum implementation on 32-bit
asm-generic: current: Don't include thread-info.h if building asm
um: Remove unsued extern declaration ldt_host_info()
um: Fix hostaudio build errors
um: Remove strlcpy usage
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Merge tag 'hyperv-next-signed-20230902' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Support for SEV-SNP guests on Hyper-V (Tianyu Lan)
- Support for TDX guests on Hyper-V (Dexuan Cui)
- Use SBRM API in Hyper-V balloon driver (Mitchell Levy)
- Avoid dereferencing ACPI root object handle in VMBus driver (Maciej
Szmigiero)
- A few misecllaneous fixes (Jiapeng Chong, Nathan Chancellor, Saurabh
Sengar)
* tag 'hyperv-next-signed-20230902' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
x86/hyperv: Remove duplicate include
x86/hyperv: Move the code in ivm.c around to avoid unnecessary ifdef's
x86/hyperv: Remove hv_isolation_type_en_snp
x86/hyperv: Use TDX GHCI to access some MSRs in a TDX VM with the paravisor
Drivers: hv: vmbus: Bring the post_msg_page back for TDX VMs with the paravisor
x86/hyperv: Introduce a global variable hyperv_paravisor_present
Drivers: hv: vmbus: Support >64 VPs for a fully enlightened TDX/SNP VM
x86/hyperv: Fix serial console interrupts for fully enlightened TDX guests
Drivers: hv: vmbus: Support fully enlightened TDX guests
x86/hyperv: Support hypercalls for fully enlightened TDX guests
x86/hyperv: Add hv_isolation_type_tdx() to detect TDX guests
x86/hyperv: Fix undefined reference to isolation_type_en_snp without CONFIG_HYPERV
x86/hyperv: Add missing 'inline' to hv_snp_boot_ap() stub
hv: hyperv.h: Replace one-element array with flexible-array member
Drivers: hv: vmbus: Don't dereference ACPI root object handle
x86/hyperv: Add hyperv-specific handling for VMMCALL under SEV-ES
x86/hyperv: Add smp support for SEV-SNP guest
clocksource: hyper-v: Mark hyperv tsc page unencrypted in sev-snp enlightened guest
x86/hyperv: Use vmmcall to implement Hyper-V hypercall in sev-snp enlightened guest
drivers: hv: Mark percpu hvcall input arg page unencrypted in SEV-SNP enlightened guest
...
a small pull request this time around, mostly because the
vduse network got postponed to next relase so we can be sure
we got the security store right.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:
"A small pull request this time around, mostly because the vduse
network got postponed to next relase so we can be sure we got the
security store right"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_ring: fix avail_wrap_counter in virtqueue_add_packed
virtio_vdpa: build affinity masks conditionally
virtio_net: merge dma operations when filling mergeable buffers
virtio_ring: introduce dma sync api for virtqueue
virtio_ring: introduce dma map api for virtqueue
virtio_ring: introduce virtqueue_reset()
virtio_ring: separate the logic of reset/enable from virtqueue_resize
virtio_ring: correct the expression of the description of virtqueue_resize()
virtio_ring: skip unmap for premapped
virtio_ring: introduce virtqueue_dma_dev()
virtio_ring: support add premapped buf
virtio_ring: introduce virtqueue_set_dma_premapped()
virtio_ring: put mapping error check in vring_map_one_sg
virtio_ring: check use_dma_api before unmap desc for indirect
vdpa_sim: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
vdpa: add get_backend_features vdpa operation
vdpa: accept VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK backend feature
vdpa: add VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK flag
vdpa/mlx5: Remove unused function declarations
In current packed virtqueue implementation, the avail_wrap_counter won't
flip, in the case when the driver supplies a descriptor chain with a
length equals to the queue size; total_sg == vq->packed.vring.num.
Let’s assume the following situation:
vq->packed.vring.num=4
vq->packed.next_avail_idx: 1
vq->packed.avail_wrap_counter: 0
Then the driver adds a descriptor chain containing 4 descriptors.
We expect the following result with avail_wrap_counter flipped:
vq->packed.next_avail_idx: 1
vq->packed.avail_wrap_counter: 1
But, the current implementation gives the following result:
vq->packed.next_avail_idx: 1
vq->packed.avail_wrap_counter: 0
To reproduce the bug, you can set a packed queue size as small as
possible, so that the driver is more likely to provide a descriptor
chain with a length equal to the packed queue size. For example, in
qemu run following commands:
sudo qemu-system-x86_64 \
-enable-kvm \
-nographic \
-kernel "path/to/kernel_image" \
-m 1G \
-drive file="path/to/rootfs",if=none,id=disk \
-device virtio-blk,drive=disk \
-drive file="path/to/disk_image",if=none,id=rwdisk \
-device virtio-blk,drive=rwdisk,packed=on,queue-size=4,\
indirect_desc=off \
-append "console=ttyS0 root=/dev/vda rw init=/bin/bash"
Inside the VM, create a directory and mount the rwdisk device on it. The
rwdisk will hang and mount operation will not complete.
This commit fixes the wrap counter error by flipping the
packed.avail_wrap_counter, when start of descriptor chain equals to the
end of descriptor chain (head == i).
Fixes: 1ce9e6055f ("virtio_ring: introduce packed ring support")
Signed-off-by: Yuan Yao <yuanyaogoog@chromium.org>
Message-Id: <20230808051110.3492693-1-yuanyaogoog@chromium.org>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We try to build affinity mask via create_affinity_masks()
unconditionally which may lead several issues:
- the affinity mask is not used for parent without affinity support
(only VDUSE support the affinity now)
- the logic of create_affinity_masks() might not work for devices
other than block. For example it's not rare in the networking device
where the number of queues could exceed the number of CPUs. Such
case breaks the current affinity logic which is based on
group_cpus_evenly() who assumes the number of CPUs are not less than
the number of groups. This can trigger a warning[1]:
if (ret >= 0)
WARN_ON(nr_present + nr_others < numgrps);
Fixing this by only build the affinity masks only when
- Driver passes affinity descriptor, driver like virtio-blk can make
sure to limit the number of queues when it exceeds the number of CPUs
- Parent support affinity setting config ops
This help to avoid the warning. More optimizations could be done on
top.
[1]
[ 682.146655] WARNING: CPU: 6 PID: 1550 at lib/group_cpus.c:400 group_cpus_evenly+0x1aa/0x1c0
[ 682.146668] CPU: 6 PID: 1550 Comm: vdpa Not tainted 6.5.0-rc5jason+ #79
[ 682.146671] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
[ 682.146673] RIP: 0010:group_cpus_evenly+0x1aa/0x1c0
[ 682.146676] Code: 4c 89 e0 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc e8 1b c4 74 ff 48 89 ef e8 13 ac 98 ff 4c 89 e7 45 31 e4 e8 08 ac 98 ff eb c2 <0f> 0b eb b6 e8 fd 05 c3 00 45 31 e4 eb e5 cc cc cc cc cc cc cc cc
[ 682.146679] RSP: 0018:ffffc9000215f498 EFLAGS: 00010293
[ 682.146682] RAX: 000000000001f1e0 RBX: 0000000000000041 RCX: 0000000000000000
[ 682.146684] RDX: ffff888109922058 RSI: 0000000000000041 RDI: 0000000000000030
[ 682.146686] RBP: ffff888109922058 R08: ffffc9000215f498 R09: ffffc9000215f4a0
[ 682.146687] R10: 00000000000198d0 R11: 0000000000000030 R12: ffff888107e02800
[ 682.146689] R13: 0000000000000030 R14: 0000000000000030 R15: 0000000000000041
[ 682.146692] FS: 00007fef52315740(0000) GS:ffff888237380000(0000) knlGS:0000000000000000
[ 682.146695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 682.146696] CR2: 00007fef52509000 CR3: 0000000110dbc004 CR4: 0000000000370ee0
[ 682.146698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 682.146700] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 682.146701] Call Trace:
[ 682.146703] <TASK>
[ 682.146705] ? __warn+0x7b/0x130
[ 682.146709] ? group_cpus_evenly+0x1aa/0x1c0
[ 682.146712] ? report_bug+0x1c8/0x1e0
[ 682.146717] ? handle_bug+0x3c/0x70
[ 682.146721] ? exc_invalid_op+0x14/0x70
[ 682.146723] ? asm_exc_invalid_op+0x16/0x20
[ 682.146727] ? group_cpus_evenly+0x1aa/0x1c0
[ 682.146729] ? group_cpus_evenly+0x15c/0x1c0
[ 682.146731] create_affinity_masks+0xaf/0x1a0
[ 682.146735] virtio_vdpa_find_vqs+0x83/0x1d0
[ 682.146738] ? __pfx_default_calc_sets+0x10/0x10
[ 682.146742] virtnet_find_vqs+0x1f0/0x370
[ 682.146747] virtnet_probe+0x501/0xcd0
[ 682.146749] ? vp_modern_get_status+0x12/0x20
[ 682.146751] ? get_cap_addr.isra.0+0x10/0xc0
[ 682.146754] virtio_dev_probe+0x1af/0x260
[ 682.146759] really_probe+0x1a5/0x410
Fixes: 3dad56823b ("virtio-vdpa: Support interrupt affinity spreading mechanism")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230811091539.1359865-1-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently, the virtio core will perform a dma operation for each
buffer. Although, the same page may be operated multiple times.
This patch, the driver does the dma operation and manages the dma
address based the feature premapped of virtio core.
This way, we can perform only one dma operation for the pages of the
alloc frag. This is beneficial for the iommu device.
kernel command line: intel_iommu=on iommu.passthrough=0
| strict=0 | strict=1
Before | 775496pps | 428614pps
After | 1109316pps | 742853pps
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-13-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
These API has been introduced:
* virtqueue_dma_need_sync
* virtqueue_dma_sync_single_range_for_cpu
* virtqueue_dma_sync_single_range_for_device
These APIs can be used together with the premapped mechanism to sync the
DMA address.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-12-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Added virtqueue_dma_map_api* to map DMA addresses for virtual memory in
advance. The purpose is to keep memory mapped across multiple add/get
buf operations.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-11-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Introduce virtqueue_reset() to release all buffer inside vq.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-10-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The subsequent reset function will reuse these logic.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-9-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Modify the "useless" to a more accurate "unused".
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-8-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Now we add a case where we skip dma unmap, the vq->premapped is true.
We can't just rely on use_dma_api to determine whether to skip the dma
operation. For convenience, I introduced the "do_unmap". By default, it
is the same as use_dma_api. If the driver is configured with premapped,
then do_unmap is false.
So as long as do_unmap is false, for addr of desc, we should skip dma
unmap operation.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-7-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Added virtqueue_dma_dev() to get DMA device for virtio. Then the
caller can do dma operation in advance. The purpose is to keep memory
mapped across multiple add/get buf operations.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-6-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
If the vq is the premapped mode, use the sg_dma_address() directly.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-5-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This helper allows the driver change the dma mode to premapped mode.
Under the premapped mode, the virtio core do not do dma mapping
internally.
This just work when the use_dma_api is true. If the use_dma_api is false,
the dma options is not through the DMA APIs, that is not the standard
way of the linux kernel.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230810123057.43407-4-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch put the dma addr error check in vring_map_one_sg().
The benefits of doing this:
1. reduce one judgment of vq->use_dma_api.
2. make vring_map_one_sg more simple, without calling
vring_mapping_error to check the return value. simplifies subsequent
code
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-3-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Inside detach_buf_split(), if use_dma_api is false,
vring_unmap_one_split_indirect will be called many times, but actually
nothing is done. So this patch check use_dma_api firstly.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230810123057.43407-2-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Start offering the feature in the simulator. Other parent drivers can
follow this code to offer it too.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230609092127.170673-5-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This operation allow vdpa parent to expose its own backend feature bits.
Next patches introduce a feature not compatible with all parent drivers:
the ability to enable vq after driver_ok. Each parent must declare if
it allows it or not.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230609092127.170673-4-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Accepting VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK backend feature if
userland sets it.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230609092127.170673-3-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This feature flag allows the driver enabling virtqueues both before and
after DRIVER_OK.
This is needed for software assisted live migration, so userland can
restore the device status in devices with control virtqueue before the
dataplane is enabled.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Message-Id: <20230609092127.170673-2-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit 29064bfdab ("vdpa/mlx5: Add support library for mlx5 VDPA implementation")
declared but never implemented these.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Message-Id: <20230803143041.23388-1-yuehaibing@huawei.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
New support:
- Qualcomm SM6115 and QCM2290 dmaengine support
- at_xdma support for microchip,sam9x7 controller
Updates:
- idxd updates for wq simplification and ats knob updates
- fsl edma updates for v3 support
- Xilinx AXI4-Stream control support
- Yaml conversion for bcm dma binding
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Merge tag 'dmaengine-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"New controller support and updates to drivers.
New support:
- Qualcomm SM6115 and QCM2290 dmaengine support
- at_xdma support for microchip,sam9x7 controller
Updates:
- idxd updates for wq simplification and ats knob updates
- fsl edma updates for v3 support
- Xilinx AXI4-Stream control support
- Yaml conversion for bcm dma binding"
* tag 'dmaengine-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (53 commits)
dmaengine: fsl-edma: integrate v3 support
dt-bindings: fsl-dma: fsl-edma: add edma3 compatible string
dmaengine: fsl-edma: move tcd into struct fsl_dma_chan
dmaengine: fsl-edma: refactor chan_name setup and safety
dmaengine: fsl-edma: move clearing of register interrupt into setup_irq function
dmaengine: fsl-edma: refactor using devm_clk_get_enabled
dmaengine: fsl-edma: simply ATTR_DSIZE and ATTR_SSIZE by using ffs()
dmaengine: fsl-edma: move common IRQ handler to common.c
dmaengine: fsl-edma: Remove enum edma_version
dmaengine: fsl-edma: transition from bool fields to bitmask flags in drvdata
dmaengine: fsl-edma: clean up EXPORT_SYMBOL_GPL in fsl-edma-common.c
dmaengine: fsl-edma: fix build error when arch is s390
dmaengine: idxd: Fix issues with PRS disable sysfs knob
dmaengine: idxd: Allow ATS disable update only for configurable devices
dmaengine: xilinx_dma: Program interrupt delay timeout
dmaengine: xilinx_dma: Use tasklet_hi_schedule for timing critical usecase
dmaengine: xilinx_dma: Freeup active list based on descriptor completion bit
dmaengine: xilinx_dma: Increase AXI DMA transaction segment count
dmaengine: xilinx_dma: Pass AXI4-Stream control words to dma client
dt-bindings: dmaengine: xilinx_dma: Add xlnx,irq-delay property
...
- Core support for soundwire device number allocation
- intel driver updates for adding hw_params for DAI ops, hybrid number
allocation and power managemnt callback updates
- DT header include changes for subsystem
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Merge tag 'soundwire-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"Device numbering and intel driver changes are main features:
- Core support for soundwire device number allocation
- intel driver updates for adding hw_params for DAI ops, hybrid
number allocation and power managemnt callback updates
- DT header include changes for subsystem"
* tag 'soundwire-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: intel_ace2x: add DAI hw_params/prepare/hw_free callbacks
soundwire: intel_auxdevice: add hybrid IDA-based device_number allocation
soundwire: bus: add callbacks for device_number allocation
soundwire: extend parameters of new_peripheral_assigned() callback
soundWire: intel_auxdevice: resume 'sdw-master' on startup and system resume
soundwire: intel_auxdevice: enable pm_runtime earlier on startup
soundwire: Explicitly include correct DT includes
* Use refcount to prevent corruption
* Call external _get and _put in right order
* Fix use-after-free in mtd release
* Explicitly include correct DT includes
* Clean refcounting with MTD_PARTITIONED_MASTER
* mtdblock: make warning messages ratelimited
* dt-bindings: Add SEAMA partition bindings
MTD device driver changes:
* spear_smi: Use helper function devm_clk_get_enabled()
* maps: fix -Wvoid-pointer-to-enum-cast warning
* docg3: Remove unnecessary (void*) conversions
* physmap-core, spear_smi, st_spi_fsm, lpddr2_nvm, lantiq-flash, plat-ram:
- Use devm_platform_get_and_ioremap_resource()
Raw NAND core changes:
* Fix -Wvoid-pointer-to-enum-cast warning
* Export 'nand_exit_status_op()'
* dt-bindings: Fix nand-controller.yaml license
Raw NAND controller driver changes:
* Omap, Omap2, Samsung, Atmel, fsl_upm, lpc32xx_slc, lpc32xx_mlc, STM32_FMC2,
sh_ftlctl, MXC, Sunxi:
- Use devm_platform_get_and_ioremap_resource()
* Orion, vf610_nfc, Sunxi, STM32_FMC2, MTK, mpc5121, lpc32xx_slc, Intel,
FSMC, Arasan:
- Use helper function devm_clk_get_optional_enabled()
* Brcmnand:
- Use devm_platform_ioremap_resource_byname()
- Propagate init error -EPROBE_DEFER up
- Propagate error and simplify ternary operators
- Fix mtd oobsize
- Fix potential out-of-bounds access in oob write
- Fix crash during the panic_write
- Fix potential false time out warning
- Fix ECC level field setting for v7.2 controller
* fsmc: Handle clk prepare error in fsmc_nand_resume()
* Marvell: Add support for AC5 SoC
* Meson:
- Support for 512B ECC step size
- Fix build error
- Use NAND core API to check status
- dt-bindings:
* Make ECC properties dependent
* Support for 512B ECC step size
* Drop unneeded quotes
* Oxnas: Remove driver and bindings
* Qcom:
- Conversion to ->exec_op()
- Removal of the legacy interface
- Two full series of improvements/misc fixes
* Use the BIT() macro
* Use u8 instead of uint8_t
* Fix alignment with open parenthesis
* Fix the spacing
* Fix wrong indentation
* Fix a typo
* Early structure initialization
* Fix address parsing within ->exec_op()
* Remove superfluous initialization of "ret"
* Rename variables in qcom_op_cmd_mapping()
* Handle unsupported opcode in qcom_op_cmd_mapping()
* Fix the opcode check in qcom_check_op()
* Use EOPNOTSUPP instead of ENOTSUPP
* Wrap qcom_nand_exec_op() to 80 columns
* Unmap sg_list and free desc within submic_descs()
* Simplify the call to nand_prog_page_end_op()
* Do not override the error no of submit_descs()
* Sort includes alphabetically
* Clear buf_count and buf_start in raw read
* Add read/read_start ops in exec_op path
* vf610_nfc: Do not check 0 for platform_get_irq()
SPI NAND manufacturer driver changes:
* gigadevice: Add support for GD5F1GQ{4,5}RExxH
* esmt: Add support for F50D2G41KA
* toshiba: Add support for T{C,H}58NYG{0,2}S3HBAI4 and TH58NYG3S0HBAI6
SPI NOR core changes:
* fix assumption on enabling quad mode in
spi_nor_write_16bit_sr_and_check()
* avoid setting SRWD bit in SR if WP# signal not connected as it will
configure the SR permanently as read only. Add "no-wp" dt property.
* clarify the need for spi-nor compatibles in dt-bindings
SPI NOR manufacturer driver changes:
* Spansion:
- Add support for S28HS02GT
- Switch methods to use vreg_offset from SFDP instead of hardcoding
the register value
* Microchip/SST:
- Add support for sst26vf032b flash
* Winbond:
- Correct flags for Winbond w25q128
* NXP spifi:
- Use helper function devm_clk_get_enabled()
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Merge tag 'mtd/for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Miquel Raynal:
"Core MTD changes:
- Use refcount to prevent corruption
- Call external _get and _put in right order
- Fix use-after-free in mtd release
- Explicitly include correct DT includes
- Clean refcounting with MTD_PARTITIONED_MASTER
- mtdblock: make warning messages ratelimited
- dt-bindings: Add SEAMA partition bindings
Device driver changes:
- Use devm helper functions
- Fix questionable cast, remove pointless ones.
- error handling fixes
- add support for new chip versions
- update DT bindings
- misc cleanups - fix typos, whitespace, indentation"
* tag 'mtd/for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (105 commits)
dt-bindings: mtd: amlogic,meson-nand: drop unneeded quotes
mtd: spear_smi: Use helper function devm_clk_get_enabled()
mtd: rawnand: orion: Use helper function devm_clk_get_optional_enabled()
mtd: rawnand: vf610_nfc: Use helper function devm_clk_get_enabled()
mtd: rawnand: sunxi: Use helper function devm_clk_get_enabled()
mtd: rawnand: stm32_fmc2: Use helper function devm_clk_get_enabled()
mtd: rawnand: mtk: Use helper function devm_clk_get_enabled()
mtd: rawnand: mpc5121: Use helper function devm_clk_get_enabled()
mtd: rawnand: lpc32xx_slc: Use helper function devm_clk_get_enabled()
mtd: rawnand: intel: Use helper function devm_clk_get_enabled()
mtd: rawnand: fsmc: Use helper function devm_clk_get_enabled()
mtd: rawnand: arasan: Use helper function devm_clk_get_enabled()
mtd: rawnand: qcom: Add read/read_start ops in exec_op path
mtd: rawnand: qcom: Clear buf_count and buf_start in raw read
mtd: maps: fix -Wvoid-pointer-to-enum-cast warning
mtd: rawnand: fix -Wvoid-pointer-to-enum-cast warning
mtd: rawnand: fsmc: handle clk prepare error in fsmc_nand_resume()
mtd: rawnand: Propagate error and simplify ternary operators for brcmstb_nand_wait_for_completion()
mtd: rawnand: qcom: Sort includes alphabetically
mtd: rawnand: qcom: Do not override the error no of submit_descs()
...
In this cycle, we don't have a highlighted feature enhancement, but mostly
have fixed issues mainly in two parts: 1) zoned block device, 2) compression
support. For zoned block device, we've tried to improve the power-off recovery
flow as much as possible. For compression, we found some corner cases caused by
wrong compression policy and logics. Other than them, there were some reverts
and stat corrections.
Bug fix:
- use finish zone command when closing a zone
- check zone type before sending async reset zone command
- fix to assign compress_level for lz4 correctly
- fix error path of f2fs_submit_page_read()
- don't {,de}compress non-full cluster
- send small discard commands during checkpoint back
- flush inode if atomic file is aborted
- correct to account gc/cp stats
And, there are minor bug fixes, avoiding false lockdep warning, and clean-ups.
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Merge tag 'f2fs-for-6-6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this cycle, we don't have a highlighted feature enhancement, but
mostly have fixed issues mainly in two parts: 1) zoned block device,
and 2) compression support.
For zoned block device, we've tried to improve the power-off recovery
flow as much as possible. For compression, we found some corner cases
caused by wrong compression policy and logics. Other than them, there
were some reverts and stat corrections.
Bug fixes:
- use finish zone command when closing a zone
- check zone type before sending async reset zone command
- fix to assign compress_level for lz4 correctly
- fix error path of f2fs_submit_page_read()
- don't {,de}compress non-full cluster
- send small discard commands during checkpoint back
- flush inode if atomic file is aborted
- correct to account gc/cp stats
And, there are minor bug fixes, avoiding false lockdep warning, and
clean-ups"
* tag 'f2fs-for-6-6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (25 commits)
f2fs: use finish zone command when closing a zone
f2fs: compress: fix to assign compress_level for lz4 correctly
f2fs: fix error path of f2fs_submit_page_read()
f2fs: clean up error handling in sanity_check_{compress_,}inode()
f2fs: avoid false alarm of circular locking
Revert "f2fs: do not issue small discard commands during checkpoint"
f2fs: doc: fix description of max_small_discards
f2fs: should update REQ_TIME for direct write
f2fs: fix to account cp stats correctly
f2fs: fix to account gc stats correctly
f2fs: remove unneeded check condition in __f2fs_setxattr()
f2fs: fix to update i_ctime in __f2fs_setxattr()
Revert "f2fs: fix to do sanity check on extent cache correctly"
f2fs: increase usage of folio_next_index() helper
f2fs: Only lfs mode is allowed with zoned block device feature
f2fs: check zone type before sending async reset zone command
f2fs: compress: don't {,de}compress non-full cluster
f2fs: allow f2fs_ioc_{,de}compress_file to be interrupted
f2fs: don't reopen the main block device in f2fs_scan_devices
f2fs: fix to avoid mmap vs set_compress_option case
...
- kprobes: use struct_size() for variable size kretprobe_instance
data structure.
- eprobe: Simplify trace_eprobe list iteration.
- probe events: Data structure field access support on BTF argument.
. Update BTF argument support on the functions in the kernel loadable
modules (only loaded modules are supported).
. Move generic BTF access function (search function prototype and get
function parameters) to a separated file.
. Add a function to search a member of data structure in BTF.
. Support accessing BTF data structure member from probe args by
C-like arrow('->') and dot('.') operators. e.g.
't sched_switch next=next->pid vruntime=next->se.vruntime'
. Support accessing BTF data structure member from $retval. e.g.
'f getname_flags%return +0($retval->name):string'
. Add string type checking if BTF type info is available.
This will reject if user specify ":string" type for non "char
pointer" type.
. Automatically assume the fprobe event as a function return event
if $retval is used.
- selftests/ftrace: Add BTF data field access test cases.
- Documentation: Update fprobe event example with BTF data field.
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Merge tag 'probes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
- kprobes: use struct_size() for variable size kretprobe_instance data
structure.
- eprobe: Simplify trace_eprobe list iteration.
- probe events: Data structure field access support on BTF argument.
- Update BTF argument support on the functions in the kernel
loadable modules (only loaded modules are supported).
- Move generic BTF access function (search function prototype and
get function parameters) to a separated file.
- Add a function to search a member of data structure in BTF.
- Support accessing BTF data structure member from probe args by
C-like arrow('->') and dot('.') operators. e.g.
't sched_switch next=next->pid vruntime=next->se.vruntime'
- Support accessing BTF data structure member from $retval. e.g.
'f getname_flags%return +0($retval->name):string'
- Add string type checking if BTF type info is available. This will
reject if user specify ":string" type for non "char pointer"
type.
- Automatically assume the fprobe event as a function return event
if $retval is used.
- selftests/ftrace: Add BTF data field access test cases.
- Documentation: Update fprobe event example with BTF data field.
* tag 'probes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
Documentation: tracing: Update fprobe event example with BTF field
selftests/ftrace: Add BTF fields access testcases
tracing/fprobe-event: Assume fprobe is a return event by $retval
tracing/probes: Add string type check with BTF
tracing/probes: Support BTF field access from $retval
tracing/probes: Support BTF based data structure field access
tracing/probes: Add a function to search a member of a struct/union
tracing/probes: Move finding func-proto API and getting func-param API to trace_btf
tracing/probes: Support BTF argument on module functions
tracing/eprobe: Iterate trace_eprobe directly
kernel: kprobes: Use struct_size()
- Replace strlcpy() with strscpy()
- Initialize the pipe cpumask to zero on allocation
- Use within_module() instead of open coding it
- Remove extra space in hwlat_detectory/mode output
- Use LIST_HEAD() instead of open coding it
- A bunch of clean ups and fixes for the cpumask filter
- Set local da_mon_##name to static
- Fix race in snapshot buffer between cpu write and swap
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Merge tag 'trace-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull more tracing updates from Steven Rostedt:
"Tracing fixes and clean ups:
- Replace strlcpy() with strscpy()
- Initialize the pipe cpumask to zero on allocation
- Use within_module() instead of open coding it
- Remove extra space in hwlat_detectory/mode output
- Use LIST_HEAD() instead of open coding it
- A bunch of clean ups and fixes for the cpumask filter
- Set local da_mon_##name to static
- Fix race in snapshot buffer between cpu write and swap"
* tag 'trace-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/filters: Fix coding style issues
tracing/filters: Change parse_pred() cpulist ternary into an if block
tracing/filters: Fix double-free of struct filter_pred.mask
tracing/filters: Fix error-handling of cpulist parsing buffer
tracing: Zero the pipe cpumask on alloc to avoid spurious -EBUSY
ftrace: Use LIST_HEAD to initialize clear_hash
ftrace: Use within_module to check rec->ip within specified module.
tracing: Replace strlcpy with strscpy in trace/events/task.h
tracing: Fix race issue between cpu buffer write and swap
tracing: Remove extra space at the end of hwlat_detector/mode
rv: Set variable 'da_mon_##name' to static
x86 self-test code.
[ Arguably the existing code was unnecessarily fragile, and
tooling should have picked up the new syscall number,
and a wider fix is being worked on - but meanwhile, let's
not have the old syscall number in the kernel tree. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 selftest fix from Ingo Molnar:
"Fix the __NR_map_shadow_stack syscall-renumbering fallout in the x86
self-test code.
[ Arguably the existing code was unnecessarily fragile, and tooling
should have picked up the new syscall number, and a wider fix is
being worked on - but meanwhile, let's not have the old syscall
number in the kernel tree. ]"
* tag 'x86-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/x86: Update map_shadow_stack syscall nr
kernels, caused by a buggy factoring-out of existing code.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
"Fix false positive 'softirq work is pending' messages on -rt kernels,
caused by a buggy factoring-out of existing code"
* tag 'timers-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/rcu: Fix false positive "softirq work is pending" messages
and controls a CPU hot-unplug operation vs. the CFS bandwidth timer.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'smp-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fix from Ingo Molnar:
"Fix a CPU hotplug related deadlock between the task which initiates
and controls a CPU hot-unplug operation vs. the CFS bandwidth timer"
* tag 'smp-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/hotplug: Prevent self deadlock on CPU hot-unplug
and a kernel-doc fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Miscellaneous scheduler fixes: a reporting fix, a static symbol fix,
and a kernel-doc fix"
* tag 'sched-urgent-2023-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Report correct state for TASK_IDLE | TASK_FREEZABLE
sched/fair: Make update_entity_lag() static
sched/core: Add kernel-doc for set_cpus_allowed_ptr()
Mikhail reports early-6.6-based Fedora Rawhide not booting: "rcu_preempt
detected expedited stalls", minutes wait, and then hung_task splat while
kworker trying to synchronize_rcu_expedited(). Nothing logged to disk.
He bisected to my 6.6 a349d72fd9 ("mm/pgtable: add rcu_read_lock() and
rcu_read_unlock()s"): but the one to blame is my 6.5 commit to fix the
espfix "bad pmd" warnings when booting x86_64 with CONFIG_EFI_PGT_DUMP=y.
Gaah, that added an "addr >= TASK_SIZE" check to avoid pte_offset_map(),
but failed to add the equivalent check when choosing to pte_unmap().
It's not a problem on 6.5 (for different reasons, it's harmless on both
64-bit and 32-bit), but becomes a bootstopper on 6.6 with the unbalanced
rcu_read_unlock() - RCU has a WARN_ON_ONCE for that, but it would have
scrolled off Mikhail's console too quickly.
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Closes: https://lore.kernel.org/linux-mm/CABXGCsNi8Tiv5zUPNXr6UJw6qV1VdaBEfGqEAMkkXE3QPvZuAQ@mail.gmail.com/
Fixes: 8b1cb4a2e8 ("mm/pagewalk: fix EFI_PGT_DUMP of espfix area")
Fixes: a349d72fd9 ("mm/pgtable: add rcu_read_lock() and rcu_read_unlock()s")
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sudip Mukherjee reports that the mips sb1250_swarm_defconfig build fails
with the current kernel. It isn't actually MIPS-specific, it's just
that that defconfig does not have CGROUP_SCHED enabled like most configs
do, and as such shows this error:
kernel/cgroup/cgroup.c: In function 'cgroup_local_stat_show':
kernel/cgroup/cgroup.c:3699:15: error: implicit declaration of function 'cgroup_tryget_css'; did you mean 'cgroup_tryget'? [-Werror=implicit-function-declaration]
3699 | css = cgroup_tryget_css(cgrp, ss);
| ^~~~~~~~~~~~~~~~~
| cgroup_tryget
kernel/cgroup/cgroup.c:3699:13: warning: assignment to 'struct cgroup_subsys_state *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
3699 | css = cgroup_tryget_css(cgrp, ss);
| ^
because cgroup_tryget_css() only exists when CGROUP_SCHED is enabled,
and the cgroup_local_stat_show() function should similarly be guarded by
that config option.
Move things around a bit to fix this all.
Fixes: d1d4ff5d11 ("cgroup: put cgroup_tryget_css() inside CONFIG_CGROUP_SCHED")
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix the typo which resulted in the driver using FB_DEFAULT_IOMEM_HELPERS
instead of FB_DEFAULT_IOMEM_OPS as the fbdev I/O helpers.
Fixes: 5011260838 ("fbdev/g364fb: Use fbdev I/O helpers")
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Review comments noted that an if block would be clearer than a ternary, so
swap it out.
No change in behaviour intended
Link: https://lkml.kernel.org/r/20230901151039.125186-4-vschneid@redhat.com
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
When a cpulist filter is found to contain a single CPU, that CPU is saved
as a scalar and the backing cpumask storage is freed.
Also NULL the mask to avoid a double-free once we get down to
free_predicate().
Link: https://lkml.kernel.org/r/20230901151039.125186-3-vschneid@redhat.com
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
