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When a vCPU is interrupted by a signal while running a nested guest,
KVM will exit to userspace with L2 state. However, userspace has no
way to know whether it sees L1 or L2 state (besides calling
KVM_GET_STATS_FD, which does not have a stable ABI).
This causes multiple problems:
The simplest one is L2 state corruption when userspace marks the sregs
as dirty. See this mailing list thread [1] for a complete discussion.
Another problem is that if userspace decides to continue by emulating
instructions, it will unknowingly emulate with L2 state as if L1
doesn't exist, which can be considered a weird guest escape.
Introduce a new flag, KVM_RUN_X86_GUEST_MODE, in the kvm_run data
structure, which is set when the vCPU exited while running a nested
guest. Also introduce a new capability, KVM_CAP_X86_GUEST_MODE, to
advertise the functionality to userspace.
[1] https://lore.kernel.org/kvm/20240416123558.212040-1-julian.stecklina@cyberus-technology.de/T/#m280aadcb2e10ae02c191a7dc4ed4b711a74b1f55
Signed-off-by: Thomas Prescher <thomas.prescher@cyberus-technology.de>
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
Link: https://lore.kernel.org/r/20240508132502.184428-1-julian.stecklina@cyberus-technology.de
Signed-off-by: Sean Christopherson <seanjc@google.com>
Improve the description for the KVM_CAP_X86_BUS_LOCK_EXIT capability to
fix a few typos and grammar issues, and to clarify the purpose of the
capability.
Signed-off-by: Carlos López <clopez@suse.de>
Link: https://lore.kernel.org/r/20240424105616.29596-1-clopez@suse.de
[sean: massage changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move guest_cpuid_is_amd_or_hygon() into cpuid.c now that, except for one
Intel quirk in the emulator, KVM checks for AMD vs. Intel *compatible*
vCPUs, not exact vendors, i.e. now that there should not be any reason for
KVM at-large to care about the exact vendor.
Opportunistically refactor the guts of the helper to use "entry" instead
of "best", and short circuit the !entry path to make the common case more
readable.
Link: https://lore.kernel.org/r/20240405235603.1173076-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Open code the is_guest_vendor_intel() check in string_registers_quirk() to
discourage makiking exact vendor==Intel checks in the emulator, and to
remove the rather awful #ifdeffery.
The string quirk is literally the only Intel specific, *non-architectural*
behavior that KVM emulates. All Intel specific behavior that is
architecturally defined applies to all vendors that are compatible with
Intel's architecture, i.e. should use guest_cpuid_is_intel_compatible().
Link: https://lore.kernel.org/r/20240405235603.1173076-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Emulate SYSENTER in Compatibility Mode for all vCPUs models that are
compatible with Intel's architecture, as the behavior if SYSENTER is
architecturally defined in Intel's SDM, i.e. should be followed by any
CPU that implements Intel's architecture.
Link: https://lore.kernel.org/r/20240405235603.1173076-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Emulate bits 63:32 of the SYSENTER_R{I,S}P MSRs for all vCPUs that are
compatible with Intel's architecture, not just strictly vCPUs that have
vendor==Intel. The behavior of bits 63:32 is architecturally defined in
the SDM, i.e. not some uarch specific quirk of Intel CPUs.
Link: https://lore.kernel.org/r/20240405235603.1173076-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Use guest_cpuid_is_intel_compatible() to determine whether SYSCALL in
32-bit Protected Mode (including Compatibility Mode) should #UD or succeed.
The existing code already does the exact equivalent of
guest_cpuid_is_intel_compatible(), just in a rather roundabout way.
No functional change intended.
Link: https://lore.kernel.org/r/20240405235603.1173076-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Treat code #DBs as inhibited in MOV/POP-SS shadows for vCPU models that
are Intel compatible, not just strictly vCPUs with vendor==Intel. The
behavior is explicitly called out in the SDM, and thus architectural, i.e.
applies to all CPUs that implement Intel's architecture, and isn't a quirk
that is unique to CPUs manufactured by Intel:
However, if an instruction breakpoint is placed on an instruction located
immediately after a POP SS/MOV SS instruction, the breakpoint will be
suppressed as if EFLAGS.RF were 1.
Applying the behavior strictly to Intel wasn't intentional, KVM simply
didn't have a concept of "Intel compatible" as of commit baf67ca8e5
("KVM: x86: Suppress code #DBs on Intel if MOV/POP SS blocking is active").
Link: https://lore.kernel.org/r/20240405235603.1173076-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Extend Intel's check on MSR_TSC_AUX[63:32] to all vCPU models that are
Intel compatible, i.e. aren't AMD or Hygon in KVM's world, as the behavior
is architectural, i.e. applies to any CPU that is compatible with Intel's
architecture. Applying the behavior strictly to Intel wasn't intentional,
KVM simply didn't have a concept of "Intel compatible" as of commit
61a05d444d ("KVM: x86: Tie Intel and AMD behavior for MSR_TSC_AUX to
guest CPU model").
Link: https://lore.kernel.org/r/20240405235603.1173076-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Zero out the sampling period for checkpointed events if the host supports
HLE or RTM, i.e. supports transactions and thus checkpointed events, not
based on whether the vCPU vendor model is Intel. Perf's refusal to allow
a sample period for checkpointed events is based purely on whether or not
the CPU supports HLE/RTM transactions, i.e. perf has no knowledge of the
vCPU vendor model.
Note, it is _extremely_ unlikely that the existing code is a problem in
real world usage, as there are far, far bigger hurdles that would need to
be cleared to support cross-vendor vPMUs. The motivation is mainly to
eliminate the use of guest_cpuid_is_intel(), in order to get to a state
where KVM pivots on AMD vs. Intel compatibility, i.e. doesn't check for
exactly vendor==Intel except in rare circumstances (i.e. for CPU quirks).
Cc: Like Xu <like.xu.linux@gmail.com>
Link: https://lore.kernel.org/r/20240405235603.1173076-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
After commit 0ec3d6d1f1 "KVM: x86: Fully defer to vendor code to decide
how to force immediate exit", vmx_request_immediate_exit() was removed.
Commit 5f18c642ff "KVM: VMX: Move out vmx_x86_ops to 'main.c' to dispatch
VMX and TDX" added its declaration by accident. Remove it.
Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://lore.kernel.org/r/20240506075025.2251131-1-binbin.wu@linux.intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
The check_apicv_inhibit_reasons() callback implementation was dropped in
the commit b3f257a846 ("KVM: x86: Track required APICv inhibits with
variable, not callback"), but the definition removal was missed in the
final version patch (it was removed in the v4). Therefore, it should be
dropped, and the vmx_check_apicv_inhibit_reasons() function declaration
should also be removed.
Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
Reviewed-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Link: https://lore.kernel.org/r/54abd1d0ccaba4d532f81df61259b9c0e021fbde.1714977229.git.houwenlong.hwl@antgroup.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Keep kvm_apicv_inhibit enum naming consistent with the current pattern by
renaming the reason/enumerator defined as APICV_INHIBIT_REASON_DISABLE to
APICV_INHIBIT_REASON_DISABLED.
No functional change intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Link: https://lore.kernel.org/r/20240506225321.3440701-3-alejandro.j.jimenez@oracle.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Use the tracing infrastructure helper __print_flags() for printing flag
bitfields, to enhance the trace output by displaying a string describing
each of the inhibit reasons set.
The kvm_apicv_inhibit_changed tracepoint currently shows the raw bitmap
value, requiring the user to consult the source file where the inhibit
reasons are defined to decode the trace output.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20240506225321.3440701-2-alejandro.j.jimenez@oracle.com
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add KVM_CAP_X86_APIC_BUS_CYCLES_NS capability to configure the APIC
bus clock frequency for APIC timer emulation.
Allow KVM_ENABLE_CAPABILITY(KVM_CAP_X86_APIC_BUS_CYCLES_NS) to set the
frequency in nanoseconds. When using this capability, the user space
VMM should configure CPUID leaf 0x15 to advertise the frequency.
Vishal reported that the TDX guest kernel expects a 25MHz APIC bus
frequency but ends up getting interrupts at a significantly higher rate.
The TDX architecture hard-codes the core crystal clock frequency to
25MHz and mandates exposing it via CPUID leaf 0x15. The TDX architecture
does not allow the VMM to override the value.
In addition, per Intel SDM:
"The APIC timer frequency will be the processor’s bus clock or core
crystal clock frequency (when TSC/core crystal clock ratio is
enumerated in CPUID leaf 0x15) divided by the value specified in
the divide configuration register."
The resulting 25MHz APIC bus frequency conflicts with the KVM hardcoded
APIC bus frequency of 1GHz.
The KVM doesn't enumerate CPUID leaf 0x15 to the guest unless the user
space VMM sets it using KVM_SET_CPUID. If the CPUID leaf 0x15 is
enumerated, the guest kernel uses it as the APIC bus frequency. If not,
the guest kernel measures the frequency based on other known timers like
the ACPI timer or the legacy PIT. As reported by Vishal the TDX guest
kernel expects a 25MHz timer frequency but gets timer interrupt more
frequently due to the 1GHz frequency used by KVM.
To ensure that the guest doesn't have a conflicting view of the APIC bus
frequency, allow the userspace to tell KVM to use the same frequency that
TDX mandates instead of the default 1Ghz.
Reported-by: Vishal Annapurve <vannapurve@google.com>
Closes: https://lore.kernel.org/lkml/20231006011255.4163884-1-vannapurve@google.com
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Co-developed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Yuan Yao <yuan.yao@intel.com>
Link: https://lore.kernel.org/r/6748a4c12269e756f0c48680da8ccc5367c31ce7.1714081726.git.reinette.chatre@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Introduce the VM variable "nanoseconds per APIC bus cycle" in
preparation to make the APIC bus frequency configurable.
The TDX architecture hard-codes the core crystal clock frequency to
25MHz and mandates exposing it via CPUID leaf 0x15. The TDX architecture
does not allow the VMM to override the value.
In addition, per Intel SDM:
"The APIC timer frequency will be the processor’s bus clock or core
crystal clock frequency (when TSC/core crystal clock ratio is
enumerated in CPUID leaf 0x15) divided by the value specified in
the divide configuration register."
The resulting 25MHz APIC bus frequency conflicts with the KVM hardcoded
APIC bus frequency of 1GHz.
Introduce the VM variable "nanoseconds per APIC bus cycle" to prepare
for allowing userspace to tell KVM to use the frequency that TDX mandates
instead of the default 1Ghz. Doing so ensures that the guest doesn't have
a conflicting view of the APIC bus frequency.
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
[reinette: rework changelog]
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Link: https://lore.kernel.org/r/ae75ce37c6c38bb4efd10a0a41932984c40b24ac.1714081726.git.reinette.chatre@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Remove APIC_BUS_FREQUENCY and calculate it based on nanoseconds per APIC
bus cycle. APIC_BUS_FREQUENCY is used only for HV_X64_MSR_APIC_FREQUENCY.
The MSR is not frequently read, calculate it every time.
There are two constants related to the APIC bus frequency:
APIC_BUS_FREQUENCY and APIC_BUS_CYCLE_NS.
Only one value is required because one can be calculated from the other:
APIC_BUS_CYCLES_NS = 1000 * 1000 * 1000 / APIC_BUS_FREQUENCY.
Remove APIC_BUS_FREQUENCY and instead calculate it when needed.
This prepares for support of configurable APIC bus frequency by
requiring to change only a single variable.
Suggested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Reviewed-by: Maxim Levitsky <maximlevitsky@gmail.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
[reinette: rework changelog]
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/76a659d0898e87ebd73ee7c922f984a87a6ab370.1714081726.git.reinette.chatre@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move shadow_phys_bits into "struct kvm_host_values", i.e. into KVM's
global "kvm_host" variable, so that it is automatically exported for use
in vendor modules. Rename the variable/field to maxphyaddr to more
clearly capture what value it holds, now that it's used outside of the
MMU (and because the "shadow" part is more than a bit misleading as the
variable is not at all unique to shadow paging).
Recomputing the raw/true host.MAXPHYADDR on every use can be subtly
expensive, e.g. it will incur a VM-Exit on the CPUID if KVM is running as
a nested hypervisor. Vendor code already has access to the information,
e.g. by directly doing CPUID or by invoking kvm_get_shadow_phys_bits(), so
there's no tangible benefit to making it MMU-only.
Link: https://lore.kernel.org/r/20240423221521.2923759-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Snapshot shadow_phys_bits when kvm.ko is loaded, not when a vendor module
is loaded, to guard against usage of shadow_phys_bits before it is
initialized. The computation isn't vendor specific in any way, i.e. there
there is no reason to wait to snapshot the value until a vendor module is
loaded, nor is there any reason to recompute the value every time a vendor
module is loaded.
Opportunistically convert it from "read mostly" to "read-only after init".
Link: https://lore.kernel.org/r/20240423221521.2923759-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Use KVM's snapshot of the host's XCR0 when stuffing SEV-ES host state
instead of reading XCR0 from hardware. XCR0 is only written during
boot, i.e. won't change while KVM is running (and KVM at large is hosed
if that doesn't hold true).
Link: https://lore.kernel.org/r/20240423221521.2923759-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add "struct kvm_host_values kvm_host" to hold the various host values
that KVM snapshots during initialization. Bundling the host values into
a single struct simplifies adding new MSRs and other features with host
state/values that KVM cares about, and provides a one-stop shop. E.g.
adding a new value requires one line, whereas tracking each value
individual often requires three: declaration, definition, and export.
No functional change intended.
Link: https://lore.kernel.org/r/20240423221521.2923759-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
- Add a quirk for three different devices that have shown issues with
LPM (link power management). These devices appear to not implement LPM
properly, since we see command timeouts when enabling LPM. The quirk
disables LPM for these problematic devices. (Me)
- Do not apply the Intel PCS quirk on Alder Lake. The quirk is not needed
and was originally added by mistake when LPM support was enabled for
this AHCI controller. Enabling the quirk when not needed causes the
the controller to not be able to detect the connected devices on some
platforms.
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Merge tag 'ata-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Niklas Cassel:
- Add a quirk for three different devices that have shown issues with
LPM (link power management). These devices appear to not implement
LPM properly, since we see command timeouts when enabling LPM. The
quirk disables LPM for these problematic devices. (Me)
- Do not apply the Intel PCS quirk on Alder Lake. The quirk is not
needed and was originally added by mistake when LPM support was
enabled for this AHCI controller. Enabling the quirk when not needed
causes the the controller to not be able to detect the connected
devices on some platforms.
* tag 'ata-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-core: Add ATA_HORKAGE_NOLPM for Apacer AS340
ata: libata-core: Add ATA_HORKAGE_NOLPM for AMD Radeon S3 SSD
ata: libata-core: Add ATA_HORKAGE_NOLPM for Crucial CT240BX500SSD1
ata: ahci: Do not apply Intel PCS quirk on Intel Alder Lake
- Fix topology parsing regression on older CPUs in the
new AMD/Hygon parser
- Fix boot crash on odd Intel Quark and similar CPUs that
do not fill out cpuinfo_x86::x86_clflush_size and zero out
cpuinfo_x86::x86_cache_alignment as a result. Provide
32 bytes as a general fallback value.
- Fix topology enumeration on certain rare CPUs where the
BIOS locks certain CPUID leaves and the kernel unlocked
them late, which broke with the new topology parsing code.
Factor out this unlocking logic and move it earlier
in the parsing sequence.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Miscellaneous topology parsing fixes:
- Fix topology parsing regression on older CPUs in the new AMD/Hygon
parser
- Fix boot crash on odd Intel Quark and similar CPUs that do not fill
out cpuinfo_x86::x86_clflush_size and zero out
cpuinfo_x86::x86_cache_alignment as a result.
Provide 32 bytes as a general fallback value.
- Fix topology enumeration on certain rare CPUs where the BIOS locks
certain CPUID leaves and the kernel unlocked them late, which broke
with the new topology parsing code. Factor out this unlocking logic
and move it earlier in the parsing sequence"
* tag 'x86-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/topology/intel: Unlock CPUID before evaluating anything
x86/cpu: Provide default cache line size if not enumerated
x86/topology/amd: Evaluate SMT in CPUID leaf 0x8000001e only on family 0x17 and greater
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Ingo Molnar:
"Export a symbol to make life easier for instrumentation/debugging"
* tag 'sched-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/x86: Export 'percpu arch_freq_scale'
- Enforce full ordering for ATOMIC operations with BPF_FETCH.
- Fix uaccess build errors seen with GCC 13/14.
- Fix build errors on ppc32 due to ARCH_HAS_KERNEL_FPU_SUPPORT.
- Drop error message from lparcfg guest name lookup.
Thanks to: Christophe Leroy, Guenter Roeck, Nathan Lynch, Naveen N Rao, Puranjay
Mohan, Samuel Holland.
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Merge tag 'powerpc-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Enforce full ordering for ATOMIC operations with BPF_FETCH
- Fix uaccess build errors seen with GCC 13/14
- Fix build errors on ppc32 due to ARCH_HAS_KERNEL_FPU_SUPPORT
- Drop error message from lparcfg guest name lookup
Thanks to Christophe Leroy, Guenter Roeck, Nathan Lynch, Naveen N Rao,
Puranjay Mohan, and Samuel Holland.
* tag 'powerpc-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Limit ARCH_HAS_KERNEL_FPU_SUPPORT to PPC64
powerpc/uaccess: Use YZ asm constraint for ld
powerpc/uaccess: Fix build errors seen with GCC 13/14
powerpc/pseries/lparcfg: drop error message from guest name lookup
powerpc/bpf: enforce full ordering for ATOMIC operations with BPF_FETCH
After merging a commit 1fffe7a34c ("script: modpost: emit a warning when
the description is missing"), MODULE_DESCRIPTOR seems to be mandatory for
kernel modules. In FireWire subsystem, the most of practical kernel modules
have the field, while KUnit test modules do not. A single patch is applied
to fix them.
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Merge tag 'firewire-fixes-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"After merging a commit 1fffe7a34c ("script: modpost: emit a warning
when the description is missing"), MODULE_DESCRIPTOR seems to be
mandatory for kernel modules. In FireWire subsystem, the most of
practical kernel modules have the field, while KUnit test modules do
not. A single patch is applied to fix them"
* tag 'firewire-fixes-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: add missing MODULE_DESCRIPTION() to test modules
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Merge tag '6.10-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Two small smb3 fixes:
- Fix socket creation with sfu mount option (spotted by test generic/423)
- Minor cleanup: fix missing description in two files"
* tag '6.10-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix creating sockets when using sfu mount options
fs: smb: common: add missing MODULE_DESCRIPTION() macros
* Fix a livelock by dropping an xfarray sortinfo folio when an error is
encountered.
* During extended attribute operations, Initialize transaction reservation
computation based on attribute operation code.
* Relax symbolic link's ondisk verification code to allow symbolic links
with short remote targets.
* Prevent soft lockups when unmapping file ranges and also during remapping
blocks during a reflink operation.
* Fix compilation warnings when XFS is built with W=1 option.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.10-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Chandan Babu:
- Fix a livelock by dropping an xfarray sortinfo folio when an error
is encountered
- During extended attribute operations, Initialize transaction
reservation computation based on attribute operation code
- Relax symbolic link's ondisk verification code to allow symbolic
links with short remote targets
- Prevent soft lockups when unmapping file ranges and also during
remapping blocks during a reflink operation
- Fix compilation warnings when XFS is built with W=1 option
* tag 'xfs-6.10-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: Add cond_resched to block unmap range and reflink remap path
xfs: don't open-code u64_to_user_ptr
xfs: allow symlinks with short remote targets
xfs: fix xfs_init_attr_trans not handling explicit operation codes
xfs: drop xfarray sortinfo folio on error
xfs: Stop using __maybe_unused in xfs_alloc.c
xfs: Clear W=1 warning in xfs_iwalk_run_callbacks()
Here is a single revert for a much-reported regression in 6.10-rc1 when
it comes to a few older architectures. Turns out that the VT ioctls
don't work the same across all cpu types because of some old
compatibility requrements for stuff like alpha and powerpc. So revert
the change that attempted to have them use the _IO() macros and go back
to the known-working values instead.
This has NOT been in linux-next but has had many reports that it fixes
the issue with 6.10-rc1.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fix from Greg KH:
"Here is a single revert for a much-reported regression in 6.10-rc1
when it comes to a few older architectures.
Turns out that the VT ioctls don't work the same across all cpu types
because of some old compatibility requrements for stuff like alpha and
powerpc. So revert the change that attempted to have them use the
_IO() macros and go back to the known-working values instead.
This has NOT been in linux-next but has had many reports that it fixes
the issue with 6.10-rc1"
* tag 'tty-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "VT: Use macros to define ioctls"
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Merge tag 'landlock-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock fix from Mickaël Salaün:
"This fixes a wrong path walk triggered by syzkaller"
* tag 'landlock-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
selftests/landlock: Add layout1.refer_mount_root
landlock: Fix d_parent walk
A series of fixes that came in since the merge window, the main thing
being the fixes Andy did for DMA sync where we were calling into the DMA
API in suprising ways and causing issues as a result, the main thing
being confusing the IOMMU code.
We've also got some fairly important fixes for the stm32 driver, it
supports a wide range of hardware and some optimisations that were done
recently have broken on some systems, and a fix to prevent glitched
signals on the bus in the cadence driver.
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Merge tag 'spi-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A series of fixes that came in since the merge window, the main thing
being the fixes Andy did for DMA sync where we were calling into the
DMA API in suprising ways and causing issues as a result, the main
thing being confusing the IOMMU code.
We've also got some fairly important fixes for the stm32 driver, it
supports a wide range of hardware and some optimisations that were
done recently have broken on some systems, and a fix to prevent
glitched signals on the bus in the cadence driver"
* tag 'spi-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: stm32: Don't warn about spurious interrupts
spi: Assign dummy scatterlist to unidirectional transfers
spi: cadence: Ensure data lines set to low during dummy-cycle period
spi: stm32: Revert change that enabled controller before asserting CS
spi: Check if transfer is mapped before calling DMA sync APIs
spi: Don't mark message DMA mapped when no transfer in it is
One fix that came in since -rc1, fixing misuse of a local variable in
the DT parsing code in the RTQ2208 driver.
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Merge tag 'regulator-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One fix that came in since -rc1, fixing misuse of a local variable in
the DT parsing code in the RTQ2208 driver"
* tag 'regulator-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: rtq2208: Fix invalid memory access when devm_of_regulator_put_matches is called
The I2C bus was not taking account of the register and any padding bytes
when handling maximum write sizes supported by an I2C adaptor, this
patch from Jim Wylder fixes that.
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Merge tag 'regmap-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"The I2C bus was not taking account of the register and any padding
bytes when handling maximum write sizes supported by an I2C adaptor,
this patch from Jim Wylder fixes that"
* tag 'regmap-fix-v6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap-i2c: Subtract reg size from max_write
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Merge tag 'block-6.10-20240530' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe fixes via Keith:
- Removing unused fields (Kanchan)
- Large folio offsets support (Kundan)
- Multipath NUMA node initialiazation fix (Nilay)
- Multipath IO stats accounting fixes (Keith)
- Circular lockdep fix (Keith)
- Target race condition fix (Sagi)
- Target memory leak fix (Sagi)
- bcache fixes
- null_blk fixes (Damien)
- Fix regression in io.max due to throttle low removal (Waiman)
- DM limit table fixes (Christoph)
- SCSI and block limit fixes (Christoph)
- zone fixes (Damien)
- Misc fixes (Christoph, Hannes, hexue)
* tag 'block-6.10-20240530' of git://git.kernel.dk/linux: (25 commits)
blk-throttle: Fix incorrect display of io.max
block: Fix zone write plugging handling of devices with a runt zone
block: Fix validation of zoned device with a runt zone
null_blk: Do not allow runt zone with zone capacity smaller then zone size
nvmet: fix a possible leak when destroy a ctrl during qp establishment
nvme: use srcu for iterating namespace list
bcache: code cleanup in __bch_bucket_alloc_set()
bcache: call force_wake_up_gc() if necessary in check_should_bypass()
bcache: allow allocator to invalidate bucket in gc
block: check for max_hw_sectors underflow
block: stack max_user_sectors
sd: also set max_user_sectors when setting max_sectors
null_blk: Print correct max open zones limit in null_init_zoned_dev()
block: delete redundant function declaration
null_blk: Fix return value of nullb_device_power_store()
dm: make dm_set_zones_restrictions work on the queue limits
dm: remove dm_check_zoned
dm: move setting zoned_enabled to dm_table_set_restrictions
block: remove blk_queue_max_integrity_segments
nvme: adjust multiples of NVME_CTRL_PAGE_SIZE in offset
...
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Merge tag 'io_uring-6.10-20240530' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"A couple of minor fixes for issues introduced in the 6.10 merge window:
- Ensure that all read/write ops have an appropriate cleanup handler
set (Breno)
- Regression for applications still doing multiple mmaps even if
FEAT_SINGLE_MMAP is set (me)
- Move kmsg inquiry setting above any potential failure point,
avoiding a spurious NONEMPTY flag setting on early error (me)"
* tag 'io_uring-6.10-20240530' of git://git.kernel.dk/linux:
io_uring/net: assign kmsg inq/flags before buffer selection
io_uring/rw: Free iovec before cleaning async data
io_uring: don't attempt to mmap larger than what the user asks for
Lots of small fixes.
- A race fix for debugfs handling in ALSA core
- A series of corrections for MIDI2 core format conversions
- ASoC Intel fixes for 16 bit DMIC config
- Updates for missing module parameters in ASoC code
- HD-audio quirk, Cirrus codec fix, etc minor fixes
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Merge tag 'sound-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Lots of small fixes:
- A race fix for debugfs handling in ALSA core
- A series of corrections for MIDI2 core format conversions
- ASoC Intel fixes for 16 bit DMIC config
- Updates for missing module parameters in ASoC code
- HD-audio quirk, Cirrus codec fix, etc minor fixes"
* tag 'sound-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
ALSA: seq: ump: Fix swapped song position pointer data
ASoC: SOF: ipc4-topology: Adjust the params based on DAI formats
ASoC: SOF: ipc4-topology: Improve readability of sof_ipc4_prepare_dai_copier()
ASoC: SOF: ipc4-topology/pcm: Rename sof_ipc4_copier_is_single_format()
ASoC: SOF: ipc4-topology: Print out the channel count in sof_ipc4_dbg_audio_format
ASoC: SOF: ipc4-topology: Add support for NHLT with 16-bit only DMIC blob
ALSA: seq: Fix yet another spot for system message conversion
ALSA: ump: Set default protocol when not given explicitly
ALSA: ump: Don't accept an invalid UMP protocol number
ASoC: SOF: ipc4-topology: Fix input format query of process modules without base extension
ASoC: Intel: sof-sdw: fix missing SPI_MASTER dependency
ALSA: pcm: fix typo in comment
ALSA: ump: Don't clear bank selection after sending a program change
ALSA: seq: Fix incorrect UMP type for system messages
ALSA/hda: intel-dsp-config: reduce log verbosity
ALSA: seq: Don't clear bank selection at event -> UMP MIDI2 conversion
ALSA: seq: Fix missing bank setup between MIDI1/MIDI2 UMP conversion
ASoC: SOF: add missing MODULE_DESCRIPTION()
ASoC: SOF: reorder MODULE_ definitions
ASoC: SOF: AMD: group all module related information
...
Highlights:
- A use-after-free bugfix
- 2 Kconfig fixes for randconfig builds
- Allow setting touchscreen_dmi quirks from the cmdline for debugging
- touchscreen_dmi quirks for 2 new laptop/tablet models
The following is an automated git shortlog grouped by driver:
ISST:
- fix use-after-free in tpmi_sst_dev_remove()
thinkpad_acpi:
- Select INPUT_SPARSEKMAP in Kconfig
touchscreen_dmi:
- Add info for the EZpad 6s Pro
- Add info for GlobalSpace SolT IVW 11.6" tablet
- Add support for setting touchscreen properties from cmdline
x86-android-tablets:
- Add "select LEDS_CLASS"
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Merge tag 'platform-drivers-x86-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
- a use-after-free bugfix
- Kconfig fixes for randconfig builds
- allow setting touchscreen_dmi quirks from the cmdline for debugging
- touchscreen_dmi quirks for two new laptop/tablet models
* tag 'platform-drivers-x86-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: touchscreen_dmi: Add info for the EZpad 6s Pro
platform/x86: touchscreen_dmi: Add info for GlobalSpace SolT IVW 11.6" tablet
platform/x86: touchscreen_dmi: Add support for setting touchscreen properties from cmdline
platform/x86: thinkpad_acpi: Select INPUT_SPARSEKMAP in Kconfig
platform/x86: x86-android-tablets: Add "select LEDS_CLASS"
platform/x86: ISST: fix use-after-free in tpmi_sst_dev_remove()
* A fix to avoid pt_regs aliasing with idle thread stacks on secondary
harts.
* HAVE_ARCH_HUGE_VMAP is enabled on XIP kernels, which fixes boot issues
on XIP systems with huge pages.
* An update to the uABI documentation clarifying that only scalar
misaligned accesses were grandfathered in as supported, as the vector
extension did not exist at the time the uABI was frozen.
* A fix for the recently-added byte/half atomics to avoid losing the
fully ordered decorations.
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Merge tag 'riscv-for-linus-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix to avoid pt_regs aliasing with idle thread stacks on secondary
harts.
- HAVE_ARCH_HUGE_VMAP is enabled on XIP kernels, which fixes boot
issues on XIP systems with huge pages.
- An update to the uABI documentation clarifying that only scalar
misaligned accesses were grandfathered in as supported, as the vector
extension did not exist at the time the uABI was frozen.
- A fix for the recently-added byte/half atomics to avoid losing the
fully ordered decorations.
* tag 'riscv-for-linus-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Fix fully ordered LR/SC xchg[8|16]() implementations
Documentation: RISC-V: uabi: Only scalar misaligned loads are supported
riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel
riscv: prevent pt_regs corruption for secondary idle threads
- two downgrade fixes
- a couple snapshot deletion and repair fixes, thanks to noradtux for
finding these and providing the image to debug them
- a couple assert fixes
- convert to folio helper, from Matthew
- some improved error messages
- bit of code reorganization (just moving things around); doing this
while things are quiet so I'm not rebasing fixes past reorgs
- don't return -EROFS on inconsistency error in recovery, this confuses
util-linux and has it retry the mount
- fix failure to return error on misaligned dio write; reported as an
issue with coreutils shred
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Merge tag 'bcachefs-2024-05-30' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"Assorted odds and ends...
- two downgrade fixes
- a couple snapshot deletion and repair fixes, thanks to noradtux for
finding these and providing the image to debug them
- a couple assert fixes
- convert to folio helper, from Matthew
- some improved error messages
- bit of code reorganization (just moving things around); doing this
while things are quiet so I'm not rebasing fixes past reorgs
- don't return -EROFS on inconsistency error in recovery, this
confuses util-linux and has it retry the mount
- fix failure to return error on misaligned dio write; reported as an
issue with coreutils shred"
* tag 'bcachefs-2024-05-30' of https://evilpiepirate.org/git/bcachefs: (21 commits)
bcachefs: Fix failure to return error on misaligned dio write
bcachefs: Don't return -EROFS from mount on inconsistency error
bcachefs: Fix uninitialized var warning
bcachefs: Split out sb-errors_format.h
bcachefs: Split out journal_seq_blacklist_format.h
bcachefs: Split out replicas_format.h
bcachefs: Split out disk_groups_format.h
bcachefs: split out sb-downgrade_format.h
bcachefs: split out sb-members_format.h
bcachefs: Better fsck error message for key version
bcachefs: btree_gc can now handle unknown btrees
bcachefs: add missing MODULE_DESCRIPTION()
bcachefs: Fix setting of downgrade recovery passes/errors
bcachefs: Run check_key_has_snapshot in snapshot_delete_keys()
bcachefs: Refactor delete_dead_snapshots()
bcachefs: Fix locking assert
bcachefs: Fix lookup_first_inode() when inode_generations are present
bcachefs: Plumb bkey into __btree_err()
bcachefs: Use copy_folio_from_iter_atomic()
bcachefs: Fix sb-downgrade validation
...
Intel CPUs have a MSR bit to limit CPUID enumeration to leaf two. If
this bit is set by the BIOS then CPUID evaluation including topology
enumeration does not work correctly as the evaluation code does not try
to analyze any leaf greater than two.
This went unnoticed before because the original topology code just
repeated evaluation several times and managed to overwrite the initial
limited information with the correct one later. The new evaluation code
does it once and therefore ends up with the limited and wrong
information.
Cure this by unlocking CPUID right before evaluating anything which
depends on the maximum CPUID leaf being greater than two instead of
rereading stuff after unlock.
Fixes: 22d63660c3 ("x86/cpu: Use common topology code for Intel")
Reported-by: Peter Schneider <pschneider1968@googlemail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/fd3f73dc-a86f-4bcf-9c60-43556a21eb42@googlemail.com
