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[PATCH 0/2] x86/spec-ctrl: Reduce HVM RAS overhead
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 11 Aug 2022 20:59:03 +0100
- Authentication-results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Thu, 11 Aug 2022 19:59:44 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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(-)
--
2.11.0
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