[PATCH QEMU-KVM 13/34] test: add cr8 latency tests

[Avi Kivity]

In light of the recent cr8/ept problem.

Signed-off-by: Avi Kivity <a...@redhat.com>
---
 kvm/user/test/x86/vmexit.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/kvm/user/test/x86/vmexit.c b/kvm/user/test/x86/vmexit.c
index bd1895f..cce26d9 100644
--- a/kvm/user/test/x86/vmexit.c
+++ b/kvm/user/test/x86/vmexit.c
@@ -37,12 +37,28 @@ static void vmcall(void)
        asm volatile ("vmcall" : "+a"(a), "=b"(b), "=c"(c), "=d"(d));
 }
 
+static void mov_from_cr8(void)
+{
+       unsigned long cr8;
+
+       asm volatile ("mov %%cr8, %0" : "=r"(cr8));
+}
+
+static void mov_to_cr8(void)
+{
+       unsigned long cr8 = 0;
+
+       asm volatile ("mov %0, %%cr8" : : "r"(cr8));
+}
+
 static struct test {
        void (*func)(void);
        const char *name;
 } tests[] = {
        { cpuid, "cpuid", },
        { vmcall, "vmcall", },
+       { mov_from_cr8, "mov_from_cr8" },
+       { mov_to_cr8, "mov_to_cr8" },
 };
 
 static void do_test(struct test *test)
-- 
1.6.4.1

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