Skip to content

KVM: SVM: Add initial GHCB protocol version 2 support

Joerg Roedel kvm lkml 6 versions – In review

Get series with b4
b4 am [email protected]

Versions newest first · linked by author and title

  1. v6 Latest7 patches 1 replyIn review
  2. v56 patches 5 repliesSuperseded
  3. v45 patches 3 repliesSuperseded
Earlier versions · 3
VersionPostedPatchesRepliesStatus
v34 patches2 repliesSuperseded
v24 patches7 repliesSuperseded
v13 patches2 repliesSuperseded

Changes in v6 from the cover letter

- Rebased to v5.17-rc1
- Added changes requested by Sean Christopherson

Patches in v6 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/7KVM: SVM: Get rid of set_ghcb_msr() and *ghcb_msr_bits() functionsarch/x86/include/asm/sev-common.h arch/x86/kvm/svm/sev.c+28 -360 replies
2/7KVM: SVM: Add helper to generate GHCB MSR verson info, and drop macroarch/x86/include/asm/sev-common.h arch/x86/kvm/svm/sev.c arch/x86/kvm/svm/svm.h+22 -200 replies
3/7KVM: SVM: Move kvm_emulate_ap_reset_hold() to AMD specific codearch/x86/include/asm/kvm_host.h arch/x86/kvm/svm/sev.c arch/x86/kvm/x86.c+12 -120 replies
4/7KVM: SVM: Set "released" on INIT-SIPI iff SEV-ES vCPU was in AP reset holdarch/x86/kvm/svm/sev.c arch/x86/kvm/svm/svm.c arch/x86/kvm/svm/svm.h+21 -300 replies
5/7KVM: SVM: Add support to handle AP reset MSR protocolarch/x86/kvm/svm/sev.c arch/x86/kvm/svm/svm.h+47 -60 replies
6/7KVM: SVM: Add support for Hypervisor Feature support MSR protocolarch/x86/include/uapi/asm/svm.h arch/x86/kvm/svm/sev.c+23 -00 replies
7/7KVM: SVM: Increase supported GHCB protocol versionarch/x86/kvm/svm/sev.c+1 -10 replies

Reviews trailers per patch

2 of 7 patches have a Reviewed-by or Acked-by.

PatchSean Christopherson
1/7R-b
2/7
3/7R-b
4/7
5/7
6/7
7/7

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.

Read the v6 thread

Cover letter [PATCH v6 0/7] KVM: SVM: Add initial GHCB protocol version 2 support

From: Joerg Roedel <[email protected]>

Hi,

here is a small set of patches which I originally took from the pending SEV-SNP patch-sets to enable basic support for GHCB protocol version 2. Meanwhile a couple of other patches from Sean Christopherson have been added.

When SEV-SNP is not supported, only two new MSR protocol VMGEXIT calls are required:

- MSR-based AP-reset-hold
- MSR-based HV-feature-request

These calls are implemented here and then the protocol is lifted to version 2.

This is submitted separately because the MSR-based AP-reset-hold call is required to support kexec/kdump in SEV-ES guests.

The previous version can be found here:

	https://lore.kernel.org/kvm/[email protected]/

Regards,

Joerg

Changes v5->v6:

- Rebased to v5.17-rc1
- Added changes requested by Sean Christopherson

Brijesh Singh (2):
KVM: SVM: Add support for Hypervisor Feature support MSR protocol
KVM: SVM: Increase supported GHCB protocol version

Joerg Roedel (2):
KVM: SVM: Get rid of set_ghcb_msr() and *ghcb_msr_bits() functions
KVM: SVM: Move kvm_emulate_ap_reset_hold() to AMD specific code

Sean Christopherson (2):
KVM: SVM: Add helper to generate GHCB MSR verson info, and drop macro
KVM: SVM: Set "released" on INIT-SIPI iff SEV-ES vCPU was in AP reset
hold

Tom Lendacky (1):
KVM: SVM: Add support to handle AP reset MSR protocol

 arch/x86/include/asm/kvm_host.h   |   2 +-
 arch/x86/include/asm/sev-common.h |  18 ++--
 arch/x86/include/uapi/asm/svm.h   |   1 +
 arch/x86/kvm/svm/sev.c            | 169 ++++++++++++++++++++----------
 arch/x86/kvm/svm/svm.c            |  13 ++-
 arch/x86/kvm/svm/svm.h            |  10 +-
 arch/x86/kvm/x86.c                |  12 +--
 7 files changed, 137 insertions(+), 88 deletions(-)

base-commit: e783362eb54cd99b2cac8b3a9aeac942e6f6ac07

Signature · 1 line
2.34.1

Read the cover letter in its thread