Hi all,
Today's linux-next merge of the kvm tree got a conflict in:
arch/x86/kvm/vmx.c
between commit:
117cc7a908c8 ("x86/retpoline: Fill return stack buffer on vmexit")
from the tip tree and commit:
3e95fd6d0561 ("KVM: x86: Add Intel Processor Trace virtualization mode")
from the kvm tree.
I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.
--
Cheers,
Stephen Rothwell
diff --cc arch/x86/kvm/vmx.c
index c829d89e2e63,87ac655760e5..000000000000
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@@ -50,7 -50,7 +50,8 @@@
#include <asm/apic.h>
#include <asm/irq_remapping.h>
#include <asm/mmu_context.h>
+#include <asm/nospec-branch.h>
+ #include <asm/intel_pt.h>
#include "trace.h"
#include "pmu.h"
@@@ -9491,12 -9721,9 +9731,12 @@@ static void __noclone vmx_vcpu_run(stru
#endif
);
+ /* Eliminate branch target predictions from guest mode */
+ vmexit_fill_RSB();
+
/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
- if (debugctlmsr)
- update_debugctlmsr(debugctlmsr);
+ if (vmx->host_debugctlmsr)
+ update_debugctlmsr(vmx->host_debugctlmsr);
#ifndef CONFIG_X86_64
/*
--
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