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X86/Hyper-V: Add hyperv_nested_flush_guest_mapping ftrace support

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This patch is to add hyperv_nested_flush_guest_mapping support to trace
hvFlushGuestPhysicalAddressSpace hypercall.

Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Tianyu Lan
2018-07-19 08:40:12 +00:00
committed by Paolo Bonzini
parent eb914cfe72
commit 60cfce4c4f
2 changed files with 17 additions and 0 deletions
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3
arch/x86/hyperv/nested.c
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@@ -14,6 +14,8 @@
#include <asm/mshyperv.h>
#include <asm/tlbflush.h>
#include <asm/trace/hyperv.h>
int hyperv_flush_guest_mapping(u64 as)
{
struct hv_guest_mapping_flush **flush_pcpu;
@@ -48,6 +50,7 @@ int hyperv_flush_guest_mapping(u64 as)
ret = 0;
fault:
trace_hyperv_nested_flush_guest_mapping(as, ret);
return ret;
}
EXPORT_SYMBOL_GPL(hyperv_flush_guest_mapping);