iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
9338c2233b
linux/drivers
History
Ross Lagerwall 9338c2233b iscsi_ibft: Fix finding the iBFT under Xen Dom 0 
To facilitate diskless iSCSI boot, the firmware can place a table of
configuration details in memory called the iBFT. The presence of this
table is not specified, nor is the precise location (and it's not in the
E820) so the kernel has to search for a magic marker to find it.

When running under Xen, Dom 0 does not have access to the entire host's
memory, only certain regions which are identity-mapped which means that
the pseudo-physical address in Dom0 == real host physical address.
Add the iBFT search bounds as a reserved region which causes it to be
identity-mapped in xen_set_identity_and_remap_chunk() which allows Dom0
access to the specific physical memory to correctly search for the iBFT
magic marker (and later access the full table).

This necessitates moving the call to reserve_ibft_region() somewhat
later so that it is called after e820__memory_setup() which is when the
Xen identity mapping adjustments are applied. The precise location of
the call is not too important so I've put it alongside dmi_setup() which
does similar scanning of memory for configuration tables.

Finally in the iBFT find code, instead of using isa_bus_to_virt() which
doesn't do the right thing under Xen, use early_memremap() like the
dmi_setup() code does.

The result of these changes is that it is possible to boot a diskless
Xen + Dom0 running off an iSCSI disk whereas previously it would fail to
find the iBFT and consequently, the iSCSI root disk.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Konrad Rzeszutek Wilk <konrad@darnok.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com> # for x86
Link: https://lore.kernel.org/r/20230605102840.1521549-1-ross.lagerwall@citrix.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2023-06-26 07:47:11 +02:00
..
accel accel/qaic: Call DRM helper function to destroy prime GEM 2023-06-20 08:07:29 -06:00
accessibility braille_console: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:53 -07:00
acpi ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep() 2023-06-15 18:05:19 +02:00
amba ARM: tegra: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:50 -07:00
android binder: fix UAF of alloc->vma in race with munmap() 2023-05-20 17:56:23 +01:00
ata ata: libata-scsi: Avoid deadlock on rescan after device resume 2023-06-18 12:00:49 +09:00
atm
auxdisplay
base regmap: One more fix for v6.4 2023-06-21 10:25:43 -07:00
bcma bcma: Add explicit of_device.h include 2023-04-14 15:32:56 +03:00
block Revert "virtio-blk: support completion batching for the IRQ path" 2023-06-21 04:14:28 -04:00
bluetooth Bluetooth: hci_qca: fix debugfs registration 2023-06-05 17:13:14 -07:00
bus modules-6.4-rc1 2023-04-27 16:36:55 -07:00
cdrom
cdx cdx: fix build failure due to sysfs 'bus_type' argument needing to be const 2023-04-27 16:21:32 -07:00
char tpm, tpm_tis: correct tpm_tis_flags enumeration values 2023-06-02 17:35:22 -04:00
clk clk: pxa: fix NULL pointer dereference in pxa3xx_clk_update_accr 2023-06-14 17:22:17 -07:00
clocksource Timekeeping and clocksource/event driver updates the second batch: 2023-04-29 10:24:30 -07:00
comedi
connector
counter - New Drivers 2023-05-02 10:41:31 -07:00
cpufreq cpufreq: amd-pstate: Update policy->cur in amd_pstate_adjust_perf() 2023-05-25 19:35:13 +02:00
cpuidle RISC-V: Align SBI probe implementation with spec 2023-04-29 13:04:50 -07:00
crypto This push fixes the following problems: 2023-05-07 10:57:14 -07:00
cxl cxl: Explicitly initialize resources when media is not ready 2023-05-26 13:34:39 -07:00
dax
dca Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
devfreq Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
dio
dma dmaengine: at_hdmac: Extend the Flow Controller bitfield to three bits 2023-05-24 11:20:28 +05:30
dma-buf udmabuf: revert 'Add support for mapping hugepages (v4)' 2023-06-19 13:19:32 -07:00
edac EDAC/qcom: Get rid of hardcoded register offsets 2023-05-26 20:56:55 -07:00
eisa EISA: Drop unused pci_bus_for_each_resource() index argument 2023-04-05 15:10:14 -05:00
extcon
firewire firewire: net: fix unexpected release of object for asynchronous request packet 2023-05-11 09:06:49 +09:00
firmware iscsi_ibft: Fix finding the iBFT under Xen Dom 0 2023-06-26 07:47:11 +02:00
fpga Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
fsi
gnss
gpio gpiolib: Fix irq_domain resource tracking for gpiochip_irqchip_add_domain() 2023-06-19 14:57:38 +02:00
gpu drm: use mgr->dev in drm_dbg_kms in drm_dp_add_payload_part2 2023-06-20 16:00:09 -04:00
greybus
hid for-linus-2023060501 2023-06-06 04:36:02 -07:00
hsi of: Rename of_modalias_node() 2023-04-05 19:41:10 +02:00
hte Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
hv x86/hyperv: Fix hyperv_pcpu_input_arg handling when CPUs go online/offline 2023-06-17 23:09:47 +00:00
hwmon hwmon: (k10temp) Add PCI ID for family 19, model 78h 2023-05-08 11:36:19 +02:00
hwspinlock hwspinlock: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:52 -07:00
hwtracing coresight: perf: Release Coresight path when alloc trace id failed 2023-05-11 11:18:21 +01:00
i2c i2c: imx-lpi2c: fix type char overflow issue when calculating the clock cycle 2023-06-23 12:58:24 +02:00
i3c i3c: ast2600: set variable ast2600_i3c_ops storage-class-specifier to static 2023-04-30 23:50:26 +02:00
idle intel_idle: mark few variables as __read_mostly 2023-04-27 19:37:36 +02:00
iio iio: imu: inv_icm42600: fix timestamp reset 2023-05-20 17:33:14 +01:00
infiniband RDMA/rxe: Fix rxe_cq_post 2023-06-14 14:12:43 -03:00
input Input updates for v6.4-rc5 2023-06-07 13:49:42 -07:00
interconnect modules-6.4-rc1 2023-04-27 16:36:55 -07:00
iommu iommu/amd: Fix possible memory leak of 'domain' 2023-06-16 16:36:45 +02:00
ipack
irqchip irqchip/gic: Correctly validate OF quirk descriptors 2023-05-30 11:01:22 +01:00
isdn Including fixes from netfilter. 2023-05-05 19:12:01 -07:00
leds leds: qcom-lpg: Fix PWM period limits 2023-06-03 17:00:28 +02:00
macintosh powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
mailbox mailbox: mailbox-test: fix a locking issue in mbox_test_message_write() 2023-05-31 13:26:44 -05:00
mcb mcb-lpc: Reallocate memory region to avoid memory overlapping 2023-04-20 14:24:01 +02:00
md 19 hotfixes. 8 of these are cc:stable. 2023-06-20 17:20:22 -07:00
media Revert "media: dvb-core: Fix use-after-free on race condition at dvb_frontend" 2023-06-14 23:16:29 +01:00
memory ARM: SoC drivers for v6.4 2023-04-25 12:02:16 -07:00
memstick mmc: Merge branch fixes into next 2023-04-05 11:45:35 +02:00
message Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
mfd - New Drivers 2023-05-02 10:41:31 -07:00
misc Merge tag 'at24-fixes-for-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current 2023-06-09 17:14:33 +02:00
mmc mmc: usdhi60rol0: fix deferred probing 2023-06-19 13:32:39 +02:00
most
mtd mtd: rawnand: marvell: don't set the NAND frequency select 2023-06-01 18:12:33 +02:00
mux
net net: wwan: iosm: Convert single instance struct member to flexible array 2023-06-22 11:27:47 +02:00
nfc nfc: fdp: Add MODULE_FIRMWARE macros 2023-06-18 11:19:52 +01:00
ntb
nubus
nvdimm
nvme nvme: fix the name of Zone Append for verbose logging 2023-05-31 09:21:26 -07:00
nvmem modules-6.4-rc1 2023-04-27 16:36:55 -07:00
of of: overlay: Fix missing of_node_put() in error case of init_overlay_changeset() 2023-06-09 16:12:37 -06:00
opp Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
parisc parisc: Replace regular spinlock with spin_trylock on panic path 2023-05-03 17:43:26 +02:00
parport
pci hyperv-fixes for 6.4-rc8 2023-06-19 17:05:43 -07:00
pcmcia
peci
perf KVM: arm64: PMU: Don't overwrite PMUSERENR with vcpu loaded 2023-06-04 17:19:36 +01:00
phy phy: qcom-snps: correct struct qcom_snps_hsphy kerneldoc 2023-05-16 19:48:55 +05:30
pinctrl pinctrl: meson-axg: add missing GPIOA_18 gpio group 2023-05-16 15:02:01 +02:00
platform platform/x86/amd/pmf: Register notify handler only if SPS is enabled 2023-06-22 10:20:00 +02:00
pnp PCI: Introduce pci_dev_for_each_resource() 2023-04-04 10:43:52 -05:00
power power: supply: Fix logic checking if system is running from battery 2023-05-16 23:02:56 +02:00
powercap
pps
ps3
ptp Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
pwm pwm: Changes for v6.4-rc1 2023-05-03 11:25:01 -07:00
rapidio Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
ras
regulator regulator: qcom-rpmh: Fix regulators for PM8550 2023-06-07 14:20:04 +01:00
remoteproc Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
reset Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
rpmsg Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
rtc - New Drivers 2023-05-02 10:41:31 -07:00
s390 Including fixes from wireless, and netfilter. 2023-06-15 21:11:17 -07:00
sbus Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
scsi scsi: lpfc: Fix incorrect big endian type assignment in bsg loopback path 2023-06-14 21:57:48 -04:00
sh
siox
slimbus
soc ARM: SoC fixes for 6.4, part 2 2023-06-10 13:01:09 -07:00
soundwire soundwire: stream: Add missing clear of alloc_slave_rt 2023-06-08 17:08:04 +05:30
spi spi: spi-geni-qcom: correctly handle -EPROBE_DEFER from dma_request_chan() 2023-06-15 14:58:45 +01:00
spmi spmi: Add a check for remove callback when removing a SPMI driver 2023-04-20 14:16:39 +02:00
ssb
staging Staging driver fix for 6.4-rc7 2023-06-17 11:04:10 -07:00
target scsi: target: core: Fix error path in target_setup_session() 2023-06-14 21:54:35 -04:00
tc
tee AMDTEE add return origin to load TA command 2023-06-07 12:58:22 +02:00
thermal thermal/intel/intel_soc_dts_iosf: Fix reporting wrong temperatures 2023-06-15 18:07:48 +02:00
thunderbolt thunderbolt: Mask ring interrupt on Intel hardware as well 2023-05-31 10:37:21 +03:00
tty tty: serial: fsl_lpuart: reduce RX watermark to 0 on LS1028A 2023-06-13 12:31:45 +02:00
ufs scsi: ufs: core: Fix MCQ nr_hw_queues 2023-05-16 21:07:26 -04:00
uio
usb usb: gadget: udc: core: Prevent soft_connect_store() race 2023-06-13 12:16:34 +02:00
vdpa vdpa/mlx5: Fix hang when cvq commands are triggered during device unregister 2023-06-08 15:43:08 -04:00
vfio vfio/type1: check pfn valid before converting to struct page 2023-05-23 14:16:29 -06:00
vhost vhost_vdpa: support PACKED when setting-getting vring_base 2023-06-09 12:08:04 -04:00
video fbdev: bw2: Convert to platform remove callback returning void 2023-05-30 18:33:25 +02:00
virt Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
virtio - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of 2023-04-27 19:42:02 -07:00
vlynq
w1 Char/Misc drivers for 6.4-rc1 2023-04-27 12:07:50 -07:00
watchdog linux-watchdog 6.4-rc1 tag 2023-05-04 18:33:56 -07:00
xen xen: branch for v6.4-rc4 2023-05-27 09:42:56 -07:00
zorro
Kconfig
Makefile