None of the restored registers are actually of interest to the
subsequent code (as opposed to the similar construct on the compat
mode hypercall path).
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/arch/x86/x86_64/entry.S
+++ b/xen/arch/x86/x86_64/entry.S
@@ -286,7 +286,6 @@ ENTRY(int80_direct_trap)
UNLIKELY_START(ne, msi_check)
movl $0x80,%edi
call check_for_unexpected_msi
- LOAD_C_CLOBBERED
UNLIKELY_END(msi_check)
GET_CURRENT(%rbx)
x86: drop register reload from INT80 malicious MSI guard
None of the restored registers are actually of interest to the
subsequent code (as opposed to the similar construct on the compat
mode hypercall path).
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/arch/x86/x86_64/entry.S
+++ b/xen/arch/x86/x86_64/entry.S
@@ -286,7 +286,6 @@ ENTRY(int80_direct_trap)
UNLIKELY_START(ne, msi_check)
movl $0x80,%edi
call check_for_unexpected_msi
- LOAD_C_CLOBBERED
UNLIKELY_END(msi_check)
GET_CURRENT(%rbx)
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