Pull tomoyo fixlet from Tetsuo Handa:
 "Single patch to update project links, no behavior changes"

* tag 'tomoyo-pr-20240606' of git://git.code.sf.net/p/tomoyo/tomoyo:
  tomoyo: update project links

Pull EFI fixes from Ard Biesheuvel:

 - Ensure that .discard sections are really discarded in the EFI zboot
   image build

 - Return proper error numbers from efi-pstore

 - Add __nocfi annotations to EFI runtime wrappers

* tag 'efi-fixes-for-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Add missing __nocfi annotations to runtime wrappers
  efi: pstore: Return proper errors on UEFI failures
  efi/libstub: zboot.lds: Discard .discard sections

Pull thermal control fixes from Rafael Wysocki:
 "Fix issues related to the handling of invalid trip points in the
  thermal core and in the thermal debug code that have been overlooked
  by some recent thermal control core changes"

* tag 'thermal-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: trip: Trigger trip down notifications when trips involved in mitigation become invalid
  thermal: core: Introduce thermal_trip_crossed()
  thermal/debugfs: Allow tze_seq_show() to print statistics for invalid trips
  thermal/debugfs: Print initial trip temperature and hysteresis in tze_seq_show()

Pull ACPI fixes from Rafael Wysocki:
 "These fix the ACPI EC and AC drivers, the ACPI APEI error injection
  driver and build issues related to the dev_is_pnp() macro referring to
  pnp_bus_type that is not exported to modules.

  Specifics:

   - Fix error handling during EC operation region accesses in the ACPI
     EC driver (Armin Wolf)

   - Fix a memory leak in the APEI error injection driver introduced
     during its converion to a platform driver (Dan Williams)

   - Fix build failures related to the dev_is_pnp() macro by redefining
     it as a proper function and exporting it to modules as appropriate
     and unexport pnp_bus_type which need not be exported any more (Andy
     Shevchenko)

   - Update the ACPI AC driver to use power_supply_changed() to let the
     power supply core handle configuration changes properly (Thomas
     Weißschuh)"

* tag 'acpi-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: AC: Properly notify powermanagement core about changes
  PNP: Hide pnp_bus_type from the non-PNP code
  PNP: Make dev_is_pnp() to be a function and export it for modules
  ACPI: EC: Avoid returning AE_OK on errors in address space handler
  ACPI: EC: Abort address space access upon error
  ACPI: APEI: EINJ: Fix einj_dev release leak

Pull power management fixes from Rafael Wysocki:
 "These fix the intel_pstate and amd-pstate cpufreq drivers and the
  cpupower utility.

  Specifics:

   - Fix a recently introduced unchecked HWP MSR access in the
     intel_pstate driver (Srinivas Pandruvada)

   - Add missing conversion from MHz to KHz to amd_pstate_set_boost() to
     address sysfs inteface inconsistency and fix P-state frequency
     reporting on AMD Family 1Ah CPUs in the cpupower utility (Dhananjay
     Ugwekar)

   - Get rid of an excess global header file used by the amd-pstate
     cpufreq driver (Arnd Bergmann)"

* tag 'pm-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Fix unchecked HWP MSR access
  cpufreq: amd-pstate: Fix the inconsistency in max frequency units
  cpufreq: amd-pstate: remove global header file
  tools/power/cpupower: Fix Pstate frequency reporting on AMD Family 1Ah CPUs

Pull btrfs fix from David Sterba:
 "A fix for fast fsync that needs to handle errors during writes after
  some COW failure so it does not lead to an inconsistent state"

* tag 'for-6.10-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: ensure fast fsync waits for ordered extents after a write failure

Pull bcachefs fixes from Kent Overstreet:
 "Just a few small fixes"

* tag 'bcachefs-2024-06-05' of https://evilpiepirate.org/git/bcachefs:
  bcachefs: Fix trans->locked assert
  bcachefs: Rereplicate now moves data off of durability=0 devices
  bcachefs: Fix GFP_KERNEL allocation in break_cycle()

Pull i2c fixes from Wolfram Sang:
 "This should have been my second pull request during the merge window
  but one dependency in the drm subsystem fell through the cracks and
  was only applied for rc2.

  Now we can finally remove I2C_CLASS_SPD"

* tag 'i2c-for-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: Remove I2C_CLASS_SPD
  i2c: synquacer: Remove a clk reference from struct synquacer_i2c

Pull tpm fixes from Jarkko Sakkinen:
 "The bug fix for tpm_tis_core_init() is not that critical but still
  makes sense to get into release for the sake of better quality.

  I included the Intel CPU model define change mainly to help Tony just
  a bit, as for this subsystem it cannot realistically speaking cause
  any possible harm"

* tag 'tpmdd-next-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: Switch to new Intel CPU model defines
  tpm_tis: Do *not* flush uninitialized work

Pull kvm fixes from Paolo Bonzini:
 "This is dominated by a couple large series for ARM and x86
  respectively, but apart from that things are calm.

  ARM:

   - Large set of FP/SVE fixes for pKVM, addressing the fallout from the
     per-CPU data rework and making sure that the host is not involved
     in the FP/SVE switching any more

   - Allow FEAT_BTI to be enabled with NV now that FEAT_PAUTH is
     completely supported

   - Fix for the respective priorities of Failed PAC, Illegal Execution
     state and Instruction Abort exceptions

   - Fix the handling of AArch32 instruction traps failing their
     condition code, which was broken by the introduction of
     ESR_EL2.ISS2

   - Allow vcpus running in AArch32 state to be restored in System mode

   - Fix AArch32 GPR restore that would lose the 64 bit state under some
     conditions

  RISC-V:

   - No need to use mask when hart-index-bits is 0

   - Fix incorrect reg_subtype labels in
     kvm_riscv_vcpu_set_reg_isa_ext()

  x86:

   - Fixes and debugging help for the #VE sanity check.

     Also disable it by default, even for CONFIG_DEBUG_KERNEL, because
     it was found to trigger spuriously (most likely a processor erratum
     as the exact symptoms vary by generation).

   - Avoid WARN() when two NMIs arrive simultaneously during an
     NMI-disabled situation (GIF=0 or interrupt shadow) when the
     processor supports virtual NMI.

     While generally KVM will not request an NMI window when virtual
     NMIs are supported, in this case it *does* have to single-step over
     the interrupt shadow or enable the STGI intercept, in order to
     deliver the latched second NMI.

   - Drop support for hand tuning APIC timer advancement from userspace.

     Since we have adaptive tuning, and it has proved to work well, drop
     the module parameter for manual configuration and with it a few
     stupid bugs that it had"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (32 commits)
  KVM: x86/mmu: Don't save mmu_invalidate_seq after checking private attr
  KVM: arm64: Ensure that SME controls are disabled in protected mode
  KVM: arm64: Refactor CPACR trap bit setting/clearing to use ELx format
  KVM: arm64: Consolidate initializing the host data's fpsimd_state/sve in pKVM
  KVM: arm64: Eagerly restore host fpsimd/sve state in pKVM
  KVM: arm64: Allocate memory mapped at hyp for host sve state in pKVM
  KVM: arm64: Specialize handling of host fpsimd state on trap
  KVM: arm64: Abstract set/clear of CPTR_EL2 bits behind helper
  KVM: arm64: Fix prototype for __sve_save_state/__sve_restore_state
  KVM: arm64: Reintroduce __sve_save_state
  KVM: x86: Drop support for hand tuning APIC timer advancement from userspace
  KVM: SEV-ES: Delegate LBR virtualization to the processor
  KVM: SEV-ES: Disallow SEV-ES guests when X86_FEATURE_LBRV is absent
  KVM: SEV-ES: Prevent MSR access post VMSA encryption
  RISC-V: KVM: Fix incorrect reg_subtype labels in kvm_riscv_vcpu_set_reg_isa_ext function
  RISC-V: KVM: No need to use mask when hart-index-bit is 0
  KVM: arm64: nv: Expose BTI and CSV_frac to a guest hypervisor
  KVM: arm64: nv: Fix relative priorities of exceptions generated by ERETAx
  KVM: arm64: AArch32: Fix spurious trapping of conditional instructions
  KVM: arm64: Allow AArch32 PSTATE.M to be restored as System mode
  ...

Merge cpufreq fixes for 6.10-rc3:

 - Fix a recently introduced unchecked HWP MSR access in the
   intel_pstate driver (Srinivas Pandruvada).

 - Add missing conversion from MHz to KHz to amd_pstate_set_boost()
   to address sysfs inteface inconsistency (Dhananjay Ugwekar).

 - Get rid of an excess global header file used by the amd-pstate
   cpufreq driver (Arnd Bergmann).

* pm-cpufreq:
  cpufreq: intel_pstate: Fix unchecked HWP MSR access
  cpufreq: amd-pstate: Fix the inconsistency in max frequency units
  cpufreq: amd-pstate: remove global header file

Merge ACPI EC driver fixes, an ACPI APEI fix and PNP fixes for
6.10-rc3:

 - Fix error handling during EC operation region accesses in the ACPI EC
   driver (Armin Wolf).

 - Fix a memory leak in the APEI error injection driver introduced
   during its converion to a platform driver (Dan Williams).

 - Fix build failures related to the dev_is_pnp() macro by redefining it
   as a proper function and exporting it to modules as appropriate and
   unexport pnp_bus_type which need not be exported any more (Andy
   Shevchenko).

* acpi-ec:
  ACPI: EC: Avoid returning AE_OK on errors in address space handler
  ACPI: EC: Abort address space access upon error

* acpi-apei:
  ACPI: APEI: EINJ: Fix einj_dev release leak

* pnp:
  PNP: Hide pnp_bus_type from the non-PNP code
  PNP: Make dev_is_pnp() to be a function and export it for modules

in bch2_move_data_btree, we might start with the trans unlocked from a
previous loop iteration - we need a trans_begin() before iter_init().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This fixes an issue where setting a device to durability=0 after it's
been used makes it impossible to remove.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Drop the second snapshot of mmu_invalidate_seq in kvm_faultin_pfn().
Before checking the mismatch of private vs. shared, mmu_invalidate_seq is
saved to fault->mmu_seq, which can be used to detect an invalidation
related to the gfn occurred, i.e. KVM will not install a mapping in page
table if fault->mmu_seq != mmu_invalidate_seq.

Currently there is a second snapshot of mmu_invalidate_seq, which may not
be same as the first snapshot in kvm_faultin_pfn(), i.e. the gfn attribute
may be changed between the two snapshots, but the gfn may be mapped in
page table without hindrance. Therefore, drop the second snapshot as it
has no obvious benefits.

Fixes: f6adeae8 ("KVM: x86/mmu: Handle no-slot faults at the beginning of kvm_faultin_pfn()")
Signed-off-by: Tao Su <tao1.su@linux.intel.com>
Message-ID: <20240528102234.2162763-1-tao1.su@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'kvmarm-fixes-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.10, take #1

- Large set of FP/SVE fixes for pKVM, addressing the fallout
  from the per-CPU data rework and making sure that the host
  is not involved in the FP/SVE switching any more

- Allow FEAT_BTI to be enabled with NV now that FEAT_PAUTH
  is copletely supported

- Fix for the respective priorities of Failed PAC, Illegal
  Execution state and Instruction Abort exceptions

- Fix the handling of AArch32 instruction traps failing their
  condition code, which was broken by the introduction of
  ESR_EL2.ISS2

- Allow vpcus running in AArch32 state to be restored in
  System mode

- Fix AArch32 GPR restore that would lose the 64 bit state
  under some conditions

The EFI runtime wrappers are a sandbox for calling into EFI runtime
services, which are invoked using indirect calls. When running with kCFI
enabled, the compiler will require the target of any indirect call to be
type annotated.

Given that the EFI runtime services prototypes and calling convention
are governed by the EFI spec, not the Linux kernel, adding such type
annotations for firmware routines is infeasible, and so the compiler
must be informed that prototype validation should be omitted.

Add the __nocfi annotation at the appropriate places in the EFI runtime
wrapper code to achieve this.

Note that this currently only affects 32-bit ARM, given that other
architectures that support both kCFI and EFI use an asm wrapper to call
EFI runtime services, and this hides the indirect call from the
compiler.

Fixes: 1a4fec49 ("ARM: 9392/2: Support CLANG CFI")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

New CPU #defines encode vendor and family as well as model.

Link: https://lore.kernel.org/all/20240520224620.9480-4-tony.luck@intel.com/Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

tpm_tis_core_init() may fail before tpm_tis_probe_irq_single() is
called, in which case tpm_tis_remove() unconditionally calling
flush_work() is triggering a warning for .func still being NULL.

Cc: stable@vger.kernel.org # v6.5+
Fixes: 481c2d14 ("tpm,tpm_tis: Disable interrupts after 1000 unhandled IRQs")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

Pull devicetree fixes from Rob Herring:

 - Fix regression in 'interrupt-map' handling affecting Apple M1 mini
   (at least)

 - Fix binding example warning in stm32 st,mlahb binding

 - Fix schema error in Allwinner platform binding causing lots of
   spurious warnings

 - Add missing MODULE_DESCRIPTION() to DT kunit tests

* tag 'devicetree-fixes-for-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: property: Fix fw_devlink handling of interrupt-map
  of/irq: Factor out parsing of interrupt-map parent phandle+args from of_irq_parse_raw()
  dt-bindings: arm: stm32: st,mlahb: Drop spurious "reg" property from example
  dt-bindings: arm: sunxi: Fix incorrect '-' usage
  of: of_test: add MODULE_DESCRIPTION()

Merge tag 'linux_kselftest-fixes-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fixes from Shuah Khan:
 "Fixes to build warnings in several tests and fixes to ftrace tests"

* tag 'linux_kselftest-fixes-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/futex: don't pass a const char* to asprintf(3)
  selftests/futex: don't redefine .PHONY targets (all, clean)
  selftests/tracing: Fix event filter test to retry up to 10 times
  selftests/futex: pass _GNU_SOURCE without a value to the compiler
  selftests/overlayfs: Fix build error on ppc64
  selftests/openat2: Fix build warnings on ppc64
  selftests: cachestat: Fix build warnings on ppc64
  tracing/selftests: Fix kprobe event name test for .isra. functions
  selftests/ftrace: Update required config
  selftests/ftrace: Fix to check required event file
  kselftest/alsa: Ensure _GNU_SOURCE is defined

KVM (and pKVM) do not support SME guests. Therefore KVM ensures
that the host's SME state is flushed and that SME controls for
enabling access to ZA storage and for streaming are disabled.

pKVM needs to protect against a buggy/malicious host. Ensure that
it wouldn't run a guest when protected mode is enabled should any
of the SME controls be enabled.
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-10-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

When setting/clearing CPACR bits for EL0 and EL1, use the ELx
format of the bits, which covers both. This makes the code
clearer, and reduces the chances of accidentally missing a bit.

No functional change intended.
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-9-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

Now that we have introduced finalize_init_hyp_mode(), lets
consolidate the initializing of the host_data fpsimd_state and
sve state.
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240603122852.3923848-8-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

When running in protected mode we don't want to leak protected
guest state to the host, including whether a guest has used
fpsimd/sve. Therefore, eagerly restore the host state on guest
exit when running in protected mode, which happens only if the
guest has used fpsimd/sve.
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-7-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

Protected mode needs to maintain (save/restore) the host's sve
state, rather than relying on the host kernel to do that. This is
to avoid leaking information to the host about guests and the
type of operations they are performing.

As a first step towards that, allocate memory mapped at hyp, per
cpu, for the host sve state. The following patch will use this
memory to save/restore the host state.
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-6-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

In subsequent patches, n/vhe will diverge on saving the host
fpsimd/sve state when taking a guest fpsimd/sve trap. Add a
specialized helper to handle it.

No functional change intended.
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-5-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

The same traps controlled by CPTR_EL2 or CPACR_EL1 need to be
toggled in different parts of the code, but the exact bits and
their polarity differ between these two formats and the mode
(vhe/nvhe/hvhe).

To reduce the amount of duplicated code and the chance of getting
the wrong bit/polarity or missing a field, abstract the set/clear
of CPTR_EL2 bits behind a helper.

Since (h)VHE is the way of the future, use the CPACR_EL1 format,
which is a subset of the VHE CPTR_EL2, as a reference.

No functional change intended.
Suggested-by: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-4-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

Since the prototypes for __sve_save_state/__sve_restore_state at
hyp were added, the underlying macro has acquired a third
parameter for saving/restoring ffr.

Fix the prototypes to account for the third parameter, and
restore the ffr for the guest since it is saved.
Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240603122852.3923848-3-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

Now that the hypervisor is handling the host sve state in
protected mode, it needs to be able to save it.

This reverts commit e66425fc ("KVM: arm64: Remove unused
__sve_save_state").
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20240603122852.3923848-2-tabba@google.comSigned-off-by: Marc Zyngier <maz@kernel.org>

Pull cxl fixes from Dave Jiang:

 - Compile fix for cxl-test from missing linux/vmalloc.h

 - Fix for memregion leaks in devm_cxl_add_region()

* tag 'cxl-fixes-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  cxl/region: Fix memregion leaks in devm_cxl_add_region()
  cxl/test: Add missing vmalloc.h for tools/testing/cxl/test/mem.c

KVM/riscv fixes for 6.10, take #1

- No need to use mask when hart-index-bits is 0
- Fix incorrect reg_subtype labels in kvm_riscv_vcpu_set_reg_isa_ext()

* Fixes and debugging help for the #VE sanity check.  Also disable
  it by default, even for CONFIG_DEBUG_KERNEL, because it was found
  to trigger spuriously (most likely a processor erratum as the
  exact symptoms vary by generation).

* Avoid WARN() when two NMIs arrive simultaneously during an NMI-disabled
  situation (GIF=0 or interrupt shadow) when the processor supports
  virtual NMI.  While generally KVM will not request an NMI window
  when virtual NMIs are supported, in this case it *does* have to
  single-step over the interrupt shadow or enable the STGI intercept,
  in order to deliver the latched second NMI.

* Drop support for hand tuning APIC timer advancement from userspace.
  Since we have adaptive tuning, and it has proved to work well,
  drop the module parameter for manual configuration and with it a
  few stupid bugs that it had.

Remove support for specifying a static local APIC timer advancement value,
and instead present a read-only boolean parameter to let userspace enable
or disable KVM's dynamic APIC timer advancement.  Realistically, it's all
but impossible for userspace to specify an advancement that is more
precise than what KVM's adaptive tuning can provide.  E.g. a static value
needs to be tuned for the exact hardware and kernel, and if KVM is using
hrtimers, likely requires additional tuning for the exact configuration of
the entire system.

Dropping support for a userspace provided value also fixes several flaws
in the interface.  E.g. KVM interprets a negative value other than -1 as a
large advancement, toggling between a negative and positive value yields
unpredictable behavior as vCPUs will switch from dynamic to static
advancement, changing the advancement in the middle of VM creation can
result in different values for vCPUs within a VM, etc.  Those flaws are
mostly fixable, but there's almost no justification for taking on yet more
complexity (it's minimal complexity, but still non-zero).

The only arguments against using KVM's adaptive tuning is if a setup needs
a higher maximum, or if the adjustments are too reactive, but those are
arguments for letting userspace control the absolute max advancement and
the granularity of each adjustment, e.g. similar to how KVM provides knobs
for halt polling.

Link: https://lore.kernel.org/all/20240520115334.852510-1-zhoushuling@huawei.com
Cc: Shuling Zhou <zhoushuling@huawei.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20240522010304.1650603-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

As documented in APM[1], LBR Virtualization must be enabled for SEV-ES
guests. Although KVM currently enforces LBRV for SEV-ES guests, there
are multiple issues with it:

o MSR_IA32_DEBUGCTLMSR is still intercepted. Since MSR_IA32_DEBUGCTLMSR
  interception is used to dynamically toggle LBRV for performance reasons,
  this can be fatal for SEV-ES guests. For ex SEV-ES guest on Zen3:

  [guest ~]# wrmsr 0x1d9 0x4
  KVM: entry failed, hardware error 0xffffffff
  EAX=00000004 EBX=00000000 ECX=000001d9 EDX=00000000

  Fix this by never intercepting MSR_IA32_DEBUGCTLMSR for SEV-ES guests.
  No additional save/restore logic is required since MSR_IA32_DEBUGCTLMSR
  is of swap type A.

o KVM will disable LBRV if userspace sets MSR_IA32_DEBUGCTLMSR before the
  VMSA is encrypted. Fix this by moving LBRV enablement code post VMSA
  encryption.

[1]: AMD64 Architecture Programmer's Manual Pub. 40332, Rev. 4.07 - June
     2023, Vol 2, 15.35.2 Enabling SEV-ES.
     https://bugzilla.kernel.org/attachment.cgi?id=304653

Fixes: 376c6d28 ("KVM: SVM: Provide support for SEV-ES vCPU creation/loading")
Co-developed-by: Nikunj A Dadhania <nikunj@amd.com>
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Message-ID: <20240531044644.768-4-ravi.bangoria@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

As documented in APM[1], LBR Virtualization must be enabled for SEV-ES
guests. So, prevent SEV-ES guests when LBRV support is missing.

[1]: AMD64 Architecture Programmer's Manual Pub. 40332, Rev. 4.07 - June
     2023, Vol 2, 15.35.2 Enabling SEV-ES.
     https://bugzilla.kernel.org/attachment.cgi?id=304653

Fixes: 376c6d28 ("KVM: SVM: Provide support for SEV-ES vCPU creation/loading")
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Message-ID: <20240531044644.768-3-ravi.bangoria@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

KVM currently allows userspace to read/write MSRs even after the VMSA is
encrypted. This can cause unintentional issues if MSR access has side-
effects. For ex, while migrating a guest, userspace could attempt to
migrate MSR_IA32_DEBUGCTLMSR and end up unintentionally disabling LBRV on
the target. Fix this by preventing access to those MSRs which are context
switched via the VMSA, once the VMSA is encrypted.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Message-ID: <20240531044644.768-2-ravi.bangoria@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'loongarch-fixes-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Some bootloader interface fixes, a dts fix, and a trivial cleanup"

* tag 'loongarch-fixes-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Fix GMAC's phy-mode definitions in dts
  LoongArch: Override higher address bits in JUMP_VIRT_ADDR
  LoongArch: Fix entry point in kernel image header
  LoongArch: Add all CPUs enabled by fdt to NUMA node 0
  LoongArch: Fix built-in DTB detection
  LoongArch: Remove CONFIG_ACPI_TABLE_UPGRADE in platform_init()