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* [PATCH 00/13] KVM: SVM: Misc SEV cleanups
@ 2021-01-09  0:47 Sean Christopherson
  2021-01-09  0:47 ` [PATCH 01/13] KVM: SVM: Free sev_asid_bitmap during init if SEV setup fails Sean Christopherson
                   ` (12 more replies)
  0 siblings, 13 replies; 28+ messages in thread
From: Sean Christopherson @ 2021-01-09  0:47 UTC (permalink / raw)
  To: Paolo Bonzini, Dave Hansen, Andy Lutomirski, Peter Zijlstra
  Cc: Sean Christopherson, Vitaly Kuznetsov, Wanpeng Li, Jim Mattson,
	Joerg Roedel, kvm, linux-kernel, Tom Lendacky, Borislav Petkov,
	Brijesh Singh

Minor bug fixes and refactorings of SEV related code, mainly to clean up
the KVM code for tracking whether or not SEV and SEV-ES are enabled.  E.g.
KVM has both sev_es and svm_sev_enabled(), and a global 'sev' flag while
also using 'sev' as a local variable in several places.

Based on kvm/master, commit 872f36eb0b0f ("KVM: x86: __kvm_vcpu_halt can
be static").

Not super well tested, but AFAICT the feature detection is working as
expected.

Boris, this obviously touches on the KVM vs. kernel _cpu_has() stuff as
well.  My thought is that we can judge the SME/SEV features solely on
whether or the kernel wants to dedicated a word for 'em, and hash out what
to do with KVM at large in the SGX thread.

Sean Christopherson (13):
  KVM: SVM: Free sev_asid_bitmap during init if SEV setup fails
  KVM: SVM: Zero out the VMCB array used to track SEV ASID association
  KVM: SVM: Move SEV module params/variables to sev.c
  x86/cpufeatures: Assign dedicated feature word for AMD mem encryption
  KVM: x86: Override reported SME/SEV feature flags with host mask
  x86/sev: Rename global "sev_enabled" flag to "sev_guest"
  KVM: SVM: Append "_enabled" to module-scoped SEV/SEV-ES control
    variables
  KVM: SVM: Unconditionally invoke sev_hardware_teardown()
  KVM: SVM: Explicitly check max SEV ASID during sev_hardware_setup()
  KVM: SVM: Move SEV VMCB tracking allocation to sev.c
  KVM: SVM: Drop redundant svm_sev_enabled() helper
  KVM: SVM: Remove an unnecessary prototype declaration of
    sev_flush_asids()
  KVM: SVM: Skip SEV cache flush if no ASIDs have been used

 arch/x86/include/asm/cpufeature.h             |  7 +-
 arch/x86/include/asm/cpufeatures.h            | 17 +++--
 arch/x86/include/asm/disabled-features.h      |  3 +-
 arch/x86/include/asm/mem_encrypt.h            |  2 +-
 arch/x86/include/asm/required-features.h      |  3 +-
 arch/x86/kernel/cpu/common.c                  |  3 +
 arch/x86/kernel/cpu/scattered.c               |  5 --
 arch/x86/kvm/cpuid.c                          |  2 +
 arch/x86/kvm/cpuid.h                          |  1 +
 arch/x86/kvm/svm/sev.c                        | 64 +++++++++++++------
 arch/x86/kvm/svm/svm.c                        | 35 +++-------
 arch/x86/kvm/svm/svm.h                        |  8 +--
 arch/x86/mm/mem_encrypt.c                     |  4 +-
 arch/x86/mm/mem_encrypt_identity.c            |  2 +-
 .../arch/x86/include/asm/disabled-features.h  |  3 +-
 .../arch/x86/include/asm/required-features.h  |  3 +-
 16 files changed, 88 insertions(+), 74 deletions(-)

-- 
2.30.0.284.gd98b1dd5eaa7-goog


^ permalink raw reply	[flat|nested] 28+ messages in thread

end of thread, other threads:[~2021-01-12 22:19 UTC | newest]

Thread overview: 28+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-01-09  0:47 [PATCH 00/13] KVM: SVM: Misc SEV cleanups Sean Christopherson
2021-01-09  0:47 ` [PATCH 01/13] KVM: SVM: Free sev_asid_bitmap during init if SEV setup fails Sean Christopherson
2021-01-11 14:42   ` Tom Lendacky
2021-01-11 18:07     ` Sean Christopherson
2021-01-09  0:47 ` [PATCH 02/13] KVM: SVM: Zero out the VMCB array used to track SEV ASID association Sean Christopherson
2021-01-09  0:47 ` [PATCH 03/13] KVM: SVM: Move SEV module params/variables to sev.c Sean Christopherson
2021-01-11 10:42   ` Vitaly Kuznetsov
2021-01-11 15:36     ` Tom Lendacky
2021-01-11 16:58       ` Vitaly Kuznetsov
2021-01-12 22:18         ` Sean Christopherson
2021-01-11 15:30   ` Tom Lendacky
2021-01-09  0:47 ` [PATCH 04/13] x86/cpufeatures: Assign dedicated feature word for AMD mem encryption Sean Christopherson
2021-01-09  0:47 ` [PATCH 05/13] KVM: x86: Override reported SME/SEV feature flags with host mask Sean Christopherson
2021-01-09  0:47 ` [PATCH 06/13] x86/sev: Rename global "sev_enabled" flag to "sev_guest" Sean Christopherson
2021-01-11 16:02   ` Tom Lendacky
2021-01-11 16:47     ` Tom Lendacky
2021-01-11 17:58       ` Sean Christopherson
2021-01-11 20:28         ` Sean Christopherson
2021-01-09  0:47 ` [PATCH 07/13] KVM: SVM: Append "_enabled" to module-scoped SEV/SEV-ES control variables Sean Christopherson
2021-01-11 16:03   ` Tom Lendacky
2021-01-09  0:47 ` [PATCH 08/13] KVM: SVM: Unconditionally invoke sev_hardware_teardown() Sean Christopherson
2021-01-09  0:47 ` [PATCH 09/13] KVM: SVM: Explicitly check max SEV ASID during sev_hardware_setup() Sean Christopherson
2021-01-09  0:47 ` [PATCH 10/13] KVM: SVM: Move SEV VMCB tracking allocation to sev.c Sean Christopherson
2021-01-09  0:47 ` [PATCH 11/13] KVM: SVM: Drop redundant svm_sev_enabled() helper Sean Christopherson
2021-01-11 17:57   ` Tom Lendacky
2021-01-11 20:59     ` Sean Christopherson
2021-01-09  0:47 ` [PATCH 12/13] KVM: SVM: Remove an unnecessary prototype declaration of sev_flush_asids() Sean Christopherson
2021-01-09  0:47 ` [PATCH 13/13] KVM: SVM: Skip SEV cache flush if no ASIDs have been used Sean Christopherson

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