History log of /linux/arch/loongarch/kvm/exit.c (Results 1 – 25 of 84)
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
# 0c436dfe 02-Oct-2024 Takashi Iwai <tiwai@suse.de>

Merge tag 'asoc-fix-v6.12-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.12

A bunch of fixes here that came in during the merge window and t

Merge tag 'asoc-fix-v6.12-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.12

A bunch of fixes here that came in during the merge window and the first
week of release, plus some new quirks and device IDs. There's nothing
major here, it's a bit bigger than it might've been due to there being
no fixes sent during the merge window due to your vacation.

show more ...


# 2cd86f02 01-Oct-2024 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Required for a panthor fix that broke when
FOP_UNSIGNED_OFFSET was added in place of FMODE_UNSIGNED_OFFSET.

Signed-off-by: Maarten L

Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes

Required for a panthor fix that broke when
FOP_UNSIGNED_OFFSET was added in place of FMODE_UNSIGNED_OFFSET.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

show more ...


Revision tags: v6.12-rc1
# 3a39d672 27-Sep-2024 Paolo Abeni <pabeni@redhat.com>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR.

No conflicts and no adjacent changes.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>


# 36ec807b 20-Sep-2024 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.12 merge window.


Revision tags: v6.11, v6.11-rc7
# f057b572 06-Sep-2024 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'ib/6.11-rc6-matrix-keypad-spitz' into next

Bring in changes removing support for platform data from matrix-keypad
driver.


Revision tags: v6.11-rc6, v6.11-rc5, v6.11-rc4, v6.11-rc3, v6.11-rc2, v6.11-rc1
# 3daee2e4 16-Jul-2024 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge tag 'v6.10' into next

Sync up with mainline to bring in device_for_each_child_node_scoped()
and other newer APIs.


# 66e72a01 29-Jul-2024 Jerome Brunet <jbrunet@baylibre.com>

Merge tag 'v6.11-rc1' into clk-meson-next

Linux 6.11-rc1


# ee057c8c 14-Aug-2024 Steven Rostedt <rostedt@goodmis.org>

Merge tag 'v6.11-rc3' into trace/ring-buffer/core

The "reserve_mem" kernel command line parameter has been pulled into
v6.11. Merge the latest -rc3 to allow the persistent ring buffer memory to
be a

Merge tag 'v6.11-rc3' into trace/ring-buffer/core

The "reserve_mem" kernel command line parameter has been pulled into
v6.11. Merge the latest -rc3 to allow the persistent ring buffer memory to
be able to be mapped at the address specified by the "reserve_mem" command
line parameter.

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

show more ...


# c8faf11c 30-Jul-2024 Tejun Heo <tj@kernel.org>

Merge tag 'v6.11-rc1' into for-6.12

Linux 6.11-rc1


# ed7171ff 16-Aug-2024 Lucas De Marchi <lucas.demarchi@intel.com>

Merge drm/drm-next into drm-xe-next

Get drm-xe-next on v6.11-rc2 and synchronized with drm-intel-next for
the display side. This resolves the current conflict for the
enable_display module parameter

Merge drm/drm-next into drm-xe-next

Get drm-xe-next on v6.11-rc2 and synchronized with drm-intel-next for
the display side. This resolves the current conflict for the
enable_display module parameter and allows further pending refactors.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

show more ...


# 5c61f598 12-Aug-2024 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-misc-next

Get drm-misc-next to the state of v6.11-rc2.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


# 3663e2c4 01-Aug-2024 Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-intel-next

Sync with v6.11-rc1 in general, and specifically get the new
BACKLIGHT_POWER_ constants for power states.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>


# 0e8655b4 29-Jul-2024 Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-misc-next

Backmerging to get a late RC of v6.10 before moving into v6.11.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>


# 4436e6da 02-Aug-2024 Thomas Gleixner <tglx@linutronix.de>

Merge branch 'linus' into x86/mm

Bring x86 and selftests up to date


# 64dd3b6a 16-Sep-2024 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'for-linus-non-x86' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
"These are the non-x86 changes (mostly ARM, as is usually the case).
The generic an

Merge tag 'for-linus-non-x86' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
"These are the non-x86 changes (mostly ARM, as is usually the case).
The generic and x86 changes will come later"

ARM:

- New Stage-2 page table dumper, reusing the main ptdump
infrastructure

- FP8 support

- Nested virtualization now supports the address translation
(FEAT_ATS1A) family of instructions

- Add selftest checks for a bunch of timer emulation corner cases

- Fix multiple cases where KVM/arm64 doesn't correctly handle the
guest trying to use a GICv3 that wasn't advertised

- Remove REG_HIDDEN_USER from the sysreg infrastructure, making
things little simpler

- Prevent MTE tags being restored by userspace if we are actively
logging writes, as that's a recipe for disaster

- Correct the refcount on a page that is not considered for MTE tag
copying (such as a device)

- When walking a page table to split block mappings, synchronize only
at the end the walk rather than on every store

- Fix boundary check when transfering memory using FFA

- Fix pKVM TLB invalidation, only affecting currently out of tree
code but worth addressing for peace of mind

LoongArch:

- Revert qspinlock to test-and-set simple lock on VM.

- Add Loongson Binary Translation extension support.

- Add PMU support for guest.

- Enable paravirt feature control from VMM.

- Implement function kvm_para_has_feature().

RISC-V:

- Fix sbiret init before forwarding to userspace

- Don't zero-out PMU snapshot area before freeing data

- Allow legacy PMU access from guest

- Fix to allow hpmcounter31 from the guest"

* tag 'for-linus-non-x86' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (64 commits)
LoongArch: KVM: Implement function kvm_para_has_feature()
LoongArch: KVM: Enable paravirt feature control from VMM
LoongArch: KVM: Add PMU support for guest
KVM: arm64: Get rid of REG_HIDDEN_USER visibility qualifier
KVM: arm64: Simplify visibility handling of AArch32 SPSR_*
KVM: arm64: Simplify handling of CNTKCTL_EL12
LoongArch: KVM: Add vm migration support for LBT registers
LoongArch: KVM: Add Binary Translation extension support
LoongArch: KVM: Add VM feature detection function
LoongArch: Revert qspinlock to test-and-set simple lock on VM
KVM: arm64: Register ptdump with debugfs on guest creation
arm64: ptdump: Don't override the level when operating on the stage-2 tables
arm64: ptdump: Use the ptdump description from a local context
arm64: ptdump: Expose the attribute parsing functionality
KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer
KVM: arm64: Move pagetable definitions to common header
KVM: arm64: nv: Add support for FEAT_ATS1A
KVM: arm64: nv: Plumb handling of AT S1* traps from EL2
KVM: arm64: nv: Make AT+PAN instructions aware of FEAT_PAN3
KVM: arm64: nv: Sanitise SCTLR_EL1.EPAN according to VM configuration
...

show more ...


# 1a371190 14-Sep-2024 Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'loongarch-kvm-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.12

1. Revert qspinlock to test-and-set simple lock o

Merge tag 'loongarch-kvm-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.12

1. Revert qspinlock to test-and-set simple lock on VM.
2. Add Loongson Binary Translation extension support.
3. Add PMU support for guest.
4. Enable paravirt feature control from VMM.
5. Implement function kvm_para_has_feature().

show more ...


# cdc118f8 12-Sep-2024 Bibo Mao <maobibo@loongson.cn>

LoongArch: KVM: Enable paravirt feature control from VMM

Export kernel paravirt features to user space, so that VMM can control
each single paravirt feature. By default paravirt features will be the

LoongArch: KVM: Enable paravirt feature control from VMM

Export kernel paravirt features to user space, so that VMM can control
each single paravirt feature. By default paravirt features will be the
same with kvm supported features if VMM does not set it.

Also a new feature KVM_FEATURE_VIRT_EXTIOI is added which can be set
from user space. This feature indicates that the virt EIOINTC can route
interrupts to 256 vCPUs, rather than 4 vCPUs like with real HW.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

show more ...


# f4e40ea9 12-Sep-2024 Song Gao <gaosong@loongson.cn>

LoongArch: KVM: Add PMU support for guest

On LoongArch, the host and guest have their own PMU CSRs registers and
they share PMU hardware resources. A set of PMU CSRs consists of a CTRL
register and

LoongArch: KVM: Add PMU support for guest

On LoongArch, the host and guest have their own PMU CSRs registers and
they share PMU hardware resources. A set of PMU CSRs consists of a CTRL
register and a CNTR register. We can set which PMU CSRs are used by the
guest by writing to the GCFG register [24:26] bits.

On KVM side:
- Save the host PMU CSRs into structure kvm_context.
- If the host supports the PMU feature.
- When entering guest mode, save the host PMU CSRs and restore the guest PMU CSRs.
- When exiting guest mode, save the guest PMU CSRs and restore the host PMU CSRs.

Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

show more ...


# b67ee19a 11-Sep-2024 Bibo Mao <maobibo@loongson.cn>

LoongArch: KVM: Add Binary Translation extension support

Loongson Binary Translation (LBT) is used to accelerate binary translation,
which contains 4 scratch registers (scr0 to scr3), x86/ARM eflags

LoongArch: KVM: Add Binary Translation extension support

Loongson Binary Translation (LBT) is used to accelerate binary translation,
which contains 4 scratch registers (scr0 to scr3), x86/ARM eflags (eflags)
and x87 fpu stack pointer (ftop).

Like FPU extension, here a lazy enabling method is used for LBT. the LBT
context is saved/restored on the vcpu context switch path.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

show more ...


# a1ff5a7d 30-Jul-2024 Maxime Ripard <mripard@kernel.org>

Merge drm/drm-fixes into drm-misc-fixes

Let's start the new drm-misc-fixes cycle by bringing in 6.11-rc1.

Signed-off-by: Maxime Ripard <mripard@kernel.org>


Revision tags: v6.10, v6.10-rc7
# 1a50d146 03-Jul-2024 Jens Axboe <axboe@kernel.dk>

Merge tag 'v6.10-rc6' into for-6.11/block-post

Pull in v6.10-rc6 to resolve a conflict for the integrity cleanups.

* tag 'v6.10-rc6': (778 commits)
Linux 6.10-rc6
ata: ahci: Clean up sysfs file

Merge tag 'v6.10-rc6' into for-6.11/block-post

Pull in v6.10-rc6 to resolve a conflict for the integrity cleanups.

* tag 'v6.10-rc6': (778 commits)
Linux 6.10-rc6
ata: ahci: Clean up sysfs file on error
ata: libata-core: Fix double free on error
ata,scsi: libata-core: Do not leak memory for ata_port struct members
ata: libata-core: Fix null pointer dereference on error
x86-32: fix cmpxchg8b_emu build error with clang
x86: stop playing stack games in profile_pc()
i2c: testunit: discard write requests while old command is running
i2c: testunit: don't erase registers after STOP
tty: mxser: Remove __counted_by from mxser_board.ports[]
randomize_kstack: Remove non-functional per-arch entropy filtering
string: kunit: add missing MODULE_DESCRIPTION() macros
ata: libata-core: Add ATA_HORKAGE_NOLPM for all Crucial BX SSD1 models
MAINTAINERS: Update IOMMU tree location
tools/power turbostat: Add local build_bug.h header for snapshot target
tools/power turbostat: Fix unc freq columns not showing with '-q' or '-l'
tools/power turbostat: option '-n' is ambiguous
drm/drm_file: Fix pid refcounting race
kallsyms: rework symbol lookup return codes
gpiolib: cdev: Ignore reconfiguration without direction
...

Signed-off-by: Jens Axboe <axboe@kernel.dk>

show more ...


# 2c9b3512 20-Jul-2024 Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
"ARM:

- Initial infrastructure for shadow stage-2 MMUs, as part of nested
virtualiza

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
"ARM:

- Initial infrastructure for shadow stage-2 MMUs, as part of nested
virtualization enablement

- Support for userspace changes to the guest CTR_EL0 value, enabling
(in part) migration of VMs between heterogenous hardware

- Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1
of the protocol

- FPSIMD/SVE support for nested, including merged trap configuration
and exception routing

- New command-line parameter to control the WFx trap behavior under
KVM

- Introduce kCFI hardening in the EL2 hypervisor

- Fixes + cleanups for handling presence/absence of FEAT_TCRX

- Miscellaneous fixes + documentation updates

LoongArch:

- Add paravirt steal time support

- Add support for KVM_DIRTY_LOG_INITIALLY_SET

- Add perf kvm-stat support for loongarch

RISC-V:

- Redirect AMO load/store access fault traps to guest

- perf kvm stat support

- Use guest files for IMSIC virtualization, when available

s390:

- Assortment of tiny fixes which are not time critical

x86:

- Fixes for Xen emulation

- Add a global struct to consolidate tracking of host values, e.g.
EFER

- Add KVM_CAP_X86_APIC_BUS_CYCLES_NS to allow configuring the
effective APIC bus frequency, because TDX

- Print the name of the APICv/AVIC inhibits in the relevant
tracepoint

- Clean up KVM's handling of vendor specific emulation to
consistently act on "compatible with Intel/AMD", versus checking
for a specific vendor

- Drop MTRR virtualization, and instead always honor guest PAT on
CPUs that support self-snoop

- Update to the newfangled Intel CPU FMS infrastructure

- Don't advertise IA32_PERF_GLOBAL_OVF_CTRL as an MSR-to-be-saved, as
it reads '0' and writes from userspace are ignored

- Misc cleanups

x86 - MMU:

- Small cleanups, renames and refactoring extracted from the upcoming
Intel TDX support

- Don't allocate kvm_mmu_page.shadowed_translation for shadow pages
that can't hold leafs SPTEs

- Unconditionally drop mmu_lock when allocating TDP MMU page tables
for eager page splitting, to avoid stalling vCPUs when splitting
huge pages

- Bug the VM instead of simply warning if KVM tries to split a SPTE
that is non-present or not-huge. KVM is guaranteed to end up in a
broken state because the callers fully expect a valid SPTE, it's
all but dangerous to let more MMU changes happen afterwards

x86 - AMD:

- Make per-CPU save_area allocations NUMA-aware

- Force sev_es_host_save_area() to be inlined to avoid calling into
an instrumentable function from noinstr code

- Base support for running SEV-SNP guests. API-wise, this includes a
new KVM_X86_SNP_VM type, encrypting/measure the initial image into
guest memory, and finalizing it before launching it. Internally,
there are some gmem/mmu hooks needed to prepare gmem-allocated
pages before mapping them into guest private memory ranges

This includes basic support for attestation guest requests, enough
to say that KVM supports the GHCB 2.0 specification

There is no support yet for loading into the firmware those signing
keys to be used for attestation requests, and therefore no need yet
for the host to provide certificate data for those keys.

To support fetching certificate data from userspace, a new KVM exit
type will be needed to handle fetching the certificate from
userspace.

An attempt to define a new KVM_EXIT_COCO / KVM_EXIT_COCO_REQ_CERTS
exit type to handle this was introduced in v1 of this patchset, but
is still being discussed by community, so for now this patchset
only implements a stub version of SNP Extended Guest Requests that
does not provide certificate data

x86 - Intel:

- Remove an unnecessary EPT TLB flush when enabling hardware

- Fix a series of bugs that cause KVM to fail to detect nested
pending posted interrupts as valid wake eents for a vCPU executing
HLT in L2 (with HLT-exiting disable by L1)

- KVM: x86: Suppress MMIO that is triggered during task switch
emulation

Explicitly suppress userspace emulated MMIO exits that are
triggered when emulating a task switch as KVM doesn't support
userspace MMIO during complex (multi-step) emulation

Silently ignoring the exit request can result in the
WARN_ON_ONCE(vcpu->mmio_needed) firing if KVM exits to userspace
for some other reason prior to purging mmio_needed

See commit 0dc902267cb3 ("KVM: x86: Suppress pending MMIO write
exits if emulator detects exception") for more details on KVM's
limitations with respect to emulated MMIO during complex emulator
flows

Generic:

- Rename the AS_UNMOVABLE flag that was introduced for KVM to
AS_INACCESSIBLE, because the special casing needed by these pages
is not due to just unmovability (and in fact they are only
unmovable because the CPU cannot access them)

- New ioctl to populate the KVM page tables in advance, which is
useful to mitigate KVM page faults during guest boot or after live
migration. The code will also be used by TDX, but (probably) not
through the ioctl

- Enable halt poll shrinking by default, as Intel found it to be a
clear win

- Setup empty IRQ routing when creating a VM to avoid having to
synchronize SRCU when creating a split IRQCHIP on x86

- Rework the sched_in/out() paths to replace kvm_arch_sched_in() with
a flag that arch code can use for hooking both sched_in() and
sched_out()

- Take the vCPU @id as an "unsigned long" instead of "u32" to avoid
truncating a bogus value from userspace, e.g. to help userspace
detect bugs

- Mark a vCPU as preempted if and only if it's scheduled out while in
the KVM_RUN loop, e.g. to avoid marking it preempted and thus
writing guest memory when retrieving guest state during live
migration blackout

Selftests:

- Remove dead code in the memslot modification stress test

- Treat "branch instructions retired" as supported on all AMD Family
17h+ CPUs

- Print the guest pseudo-RNG seed only when it changes, to avoid
spamming the log for tests that create lots of VMs

- Make the PMU counters test less flaky when counting LLC cache
misses by doing CLFLUSH{OPT} in every loop iteration"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
crypto: ccp: Add the SNP_VLEK_LOAD command
KVM: x86/pmu: Add kvm_pmu_call() to simplify static calls of kvm_pmu_ops
KVM: x86: Introduce kvm_x86_call() to simplify static calls of kvm_x86_ops
KVM: x86: Replace static_call_cond() with static_call()
KVM: SEV: Provide support for SNP_EXTENDED_GUEST_REQUEST NAE event
x86/sev: Move sev_guest.h into common SEV header
KVM: SEV: Provide support for SNP_GUEST_REQUEST NAE event
KVM: x86: Suppress MMIO that is triggered during task switch emulation
KVM: x86/mmu: Clean up make_huge_page_split_spte() definition and intro
KVM: x86/mmu: Bug the VM if KVM tries to split a !hugepage SPTE
KVM: selftests: x86: Add test for KVM_PRE_FAULT_MEMORY
KVM: x86: Implement kvm_arch_vcpu_pre_fault_memory()
KVM: x86/mmu: Make kvm_mmu_do_page_fault() return mapped level
KVM: x86/mmu: Account pf_{fixed,emulate,spurious} in callers of "do page fault"
KVM: x86/mmu: Bump pf_taken stat only in the "real" page fault handler
KVM: Add KVM_PRE_FAULT_MEMORY vcpu ioctl to pre-populate guest memory
KVM: Document KVM_PRE_FAULT_MEMORY ioctl
mm, virt: merge AS_UNMOVABLE and AS_INACCESSIBLE
perf kvm: Add kvm-stat for loongarch64
LoongArch: KVM: Add PV steal time support in guest side
...

show more ...


# c8b8b819 12-Jul-2024 Paolo Bonzini <pbonzini@redhat.com>

Merge tag 'loongarch-kvm-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.11

1. Add ParaVirt steal time support.
2. Add some V

Merge tag 'loongarch-kvm-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.11

1. Add ParaVirt steal time support.
2. Add some VM migration enhancement.
3. Add perf kvm-stat support for loongarch.

show more ...


# b4ba1570 09-Jul-2024 Bibo Mao <maobibo@loongson.cn>

LoongArch: KVM: Add PV steal time support in host side

Add ParaVirt steal time feature in host side, VM can search supported
features provided by KVM hypervisor, a feature KVM_FEATURE_STEAL_TIME
is

LoongArch: KVM: Add PV steal time support in host side

Add ParaVirt steal time feature in host side, VM can search supported
features provided by KVM hypervisor, a feature KVM_FEATURE_STEAL_TIME
is added here. Like x86, steal time structure is saved in guest memory,
one hypercall function KVM_HCALL_FUNC_NOTIFY is added to notify KVM to
enable this feature.

One CPU attr ioctl command KVM_LOONGARCH_VCPU_PVTIME_CTRL is added to
save and restore the base address of steal time structure when a VM is
migrated.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

show more ...


# a23e1966 15-Jul-2024 Dmitry Torokhov <dmitry.torokhov@gmail.com>

Merge branch 'next' into for-linus

Prepare input updates for 6.11 merge window.


1234