linux-kernel - [PATCH v6 00/21] AMX support for KVM

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Message-Id: <20220107185512.25321-1-pbonzini@redhat.com>
Date:   Fri,  7 Jan 2022 13:54:51 -0500
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     guang.zeng@...el.com, jing2.liu@...el.com, kevin.tian@...el.com,
        seanjc@...gle.com, tglx@...utronix.de, wei.w.wang@...el.com,
        yang.zhong@...el.com
Subject: [PATCH v6 00/21] AMX support for KVM

These are the final patches that I am committing.  They are the
same as v5 except for some cosmetic changes in patch 7 that
remove the need for the IS_ENABLED(CONFIG_X86_64) check, and
a rebase on top of kvm/next.

Paolo

Guang Zeng (1):
  kvm: x86: Add support for getting/setting expanded xstate buffer

Jing Liu (11):
  kvm: x86: Fix xstate_required_size() to follow XSTATE alignment rule
  kvm: x86: Exclude unpermitted xfeatures at KVM_GET_SUPPORTED_CPUID
  x86/fpu: Make XFD initialization in __fpstate_reset() a function
    argument
  kvm: x86: Enable dynamic xfeatures at KVM_SET_CPUID2
  kvm: x86: Add emulation for IA32_XFD
  x86/fpu: Prepare xfd_err in struct fpu_guest
  kvm: x86: Intercept #NM for saving IA32_XFD_ERR
  kvm: x86: Emulate IA32_XFD_ERR for guest
  kvm: x86: Disable RDMSR interception of IA32_XFD_ERR
  kvm: x86: Add XCR0 support for Intel AMX
  kvm: x86: Add CPUID support for Intel AMX

Kevin Tian (2):
  x86/fpu: Provide fpu_update_guest_xfd() for IA32_XFD emulation
  kvm: x86: Disable interception for IA32_XFD on demand

Sean Christopherson (1):
  x86/fpu: Provide fpu_enable_guest_xfd_features() for KVM

Thomas Gleixner (5):
  x86/fpu: Extend fpu_xstate_prctl() with guest permissions
  x86/fpu: Prepare guest FPU for dynamically enabled FPU features
  x86/fpu: Add guest support to xfd_enable_feature()
  x86/fpu: Add uabi_size to guest_fpu
  x86/fpu: Provide fpu_sync_guest_vmexit_xfd_state()

Wei Wang (1):
  kvm: selftests: Add support for KVM_CAP_XSAVE2

 Documentation/virt/kvm/api.rst                |  46 +++++-
 arch/x86/include/asm/cpufeatures.h            |   2 +
 arch/x86/include/asm/fpu/api.h                |  11 ++
 arch/x86/include/asm/fpu/types.h              |  32 ++++
 arch/x86/include/asm/kvm_host.h               |   1 +
 arch/x86/include/uapi/asm/kvm.h               |  16 +-
 arch/x86/include/uapi/asm/prctl.h             |  26 ++--
 arch/x86/kernel/fpu/core.c                    |  99 +++++++++++-
 arch/x86/kernel/fpu/xstate.c                  | 147 +++++++++++-------
 arch/x86/kernel/fpu/xstate.h                  |  19 ++-
 arch/x86/kernel/process.c                     |   2 +
 arch/x86/kvm/cpuid.c                          |  86 +++++++---
 arch/x86/kvm/cpuid.h                          |   2 +
 arch/x86/kvm/vmx/vmcs.h                       |   5 +
 arch/x86/kvm/vmx/vmx.c                        |  68 ++++++++
 arch/x86/kvm/vmx/vmx.h                        |   2 +-
 arch/x86/kvm/x86.c                            | 112 ++++++++++++-
 include/uapi/linux/kvm.h                      |   4 +
 tools/arch/x86/include/uapi/asm/kvm.h         |  16 +-
 tools/include/uapi/linux/kvm.h                |   3 +
 .../selftests/kvm/include/kvm_util_base.h     |   2 +
 .../selftests/kvm/include/x86_64/processor.h  |  10 ++
 tools/testing/selftests/kvm/lib/kvm_util.c    |  32 ++++
 .../selftests/kvm/lib/x86_64/processor.c      |  67 +++++++-
 .../testing/selftests/kvm/x86_64/evmcs_test.c |   2 +-
 tools/testing/selftests/kvm/x86_64/smm_test.c |   2 +-
 .../testing/selftests/kvm/x86_64/state_test.c |   2 +-
 .../kvm/x86_64/vmx_preemption_timer_test.c    |   2 +-
 28 files changed, 711 insertions(+), 107 deletions(-)

-- 
2.31.1