mbox series

[v4,0/4] Add support for allowing zero SEV ASIDs

Message ID 20240131235609.4161407-1-seanjc@google.com
Headers
Series Add support for allowing zero SEV ASIDs |

Message

Sean Christopherson Jan. 31, 2024, 11:56 p.m. UTC 
  Play nice with systems where SEV and SEV-ES are enabled, but all ASIDs
have been carved out for SEV-eS, i.e. where actually running SEV guests
is impossible.

v4:
 - Convert all ASID usage to unsigned integers.
 - Clean up sev_asid_new() so that it doesn't needlessly overload its
   return value.
 - Split out the -EBUSY=>-EINVAL change to a separate patch.

v3: https://lore.kernel.org/all/20240104190520.62510-1-Ashish.Kalra@amd.com

Ashish Kalra (1):
  KVM: SVM: Add support for allowing zero SEV ASIDs

Sean Christopherson (3):
  KVM: SVM: Set sev->asid in sev_asid_new() instead of overloading the
    return
  KVM: SVM: Use unsigned integers when dealing with ASIDs
  KVM: SVM: Return -EINVAL instead of -EBUSY on attempt to re-init
    SEV/SEV-ES

 arch/x86/kvm/svm/sev.c | 58 +++++++++++++++++++++++++-----------------
 arch/x86/kvm/trace.h   | 10 ++++----
 2 files changed, 39 insertions(+), 29 deletions(-)


base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3

Comments

Sean Christopherson Feb. 6, 2024, 9:36 p.m. UTC | #1 
On Wed, 31 Jan 2024 15:56:05 -0800, Sean Christopherson wrote:
> Play nice with systems where SEV and SEV-ES are enabled, but all ASIDs
> have been carved out for SEV-eS, i.e. where actually running SEV guests
> is impossible.
> 
> v4:
>  - Convert all ASID usage to unsigned integers.
>  - Clean up sev_asid_new() so that it doesn't needlessly overload its
>    return value.
>  - Split out the -EBUSY=>-EINVAL change to a separate patch.
> 
> [...]

Applied to kvm-x86 svm, thanks!

[1/4] KVM: SVM: Set sev->asid in sev_asid_new() instead of overloading the return
      https://github.com/kvm-x86/linux/commit/cc4ce37bed85
[2/4] KVM: SVM: Use unsigned integers when dealing with ASIDs
      https://github.com/kvm-x86/linux/commit/466eec4a22a7
[3/4] KVM: SVM: Add support for allowing zero SEV ASIDs
      https://github.com/kvm-x86/linux/commit/0aa6b90ef9d7
[4/4] KVM: SVM: Return -EINVAL instead of -EBUSY on attempt to re-init SEV/SEV-ES
      https://github.com/kvm-x86/linux/commit/fdd58834d132

--
https://github.com/kvm-x86/linux/tree/next