x86/spec-ctrl: Reduce HVM RAS overhead

[PATCH 0/2] x86/spec-ctrl: Reduce HVM RAS overhead

Andrew Cooper posted 2 patches 1 year, 8 months ago

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git fetch https://gitlab.com/xen-project/patchew/xen tags/patchew/20220811195905.7780-1-andrew.cooper3@citrix.com

xen/arch/x86/hvm/svm/entry.S     | 58 ++++++++++++++++++++++++++++++++++++----
xen/arch/x86/hvm/svm/nestedsvm.c |  3 ++-
xen/arch/x86/hvm/svm/svm.c       |  6 +++--
3 files changed, 59 insertions(+), 8 deletions(-)

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[PATCH 0/2] x86/spec-ctrl: Reduce HVM RAS overhead

Posted by Andrew Cooper 1 year, 8 months ago

This is a optimsiation discovered while working on Retbleed.

Andrew Cooper (2):
  x86/svm: Remove regs param from asm-called functions
  x86/svm: Keep the RAS balanced for guests

 xen/arch/x86/hvm/svm/entry.S     | 58 ++++++++++++++++++++++++++++++++++++----
 xen/arch/x86/hvm/svm/nestedsvm.c |  3 ++-
 xen/arch/x86/hvm/svm/svm.c       |  6 +++--
 3 files changed, 59 insertions(+), 8 deletions(-)

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2.11.0