diff mbox series

[kvm-unit-tests,1/3] x86: Remove perf enable bit from default config

Message ID 20220609083916.36658-2-weijiang.yang@intel.com (mailing list archive)
State New, archived
Headers show
Series Fix up test failures induced by !enable_pmu | expand

Commit Message

Yang Weijiang June 9, 2022, 8:39 a.m. UTC 
When pmu is disabled in KVM by enable_pmu=0, bit 7 of guest
MSR_IA32_MISC_ENABLE is cleared, but the default value of
the MSR assumes pmu is always available, this leads to test
failure. Change the logic to make it aligned with KVM config.

Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
---
 x86/msr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/x86/msr.c b/x86/msr.c
index 44fbb3b..fc05d6c 100644
--- a/x86/msr.c
+++ b/x86/msr.c
@@ -34,7 +34,7 @@  struct msr_info msr_info[] =
 	MSR_TEST(MSR_IA32_SYSENTER_ESP, addr_ul, false),
 	MSR_TEST(MSR_IA32_SYSENTER_EIP, addr_ul, false),
 	// reserved: 1:2, 4:6, 8:10, 13:15, 17, 19:21, 24:33, 35:63
-	MSR_TEST(MSR_IA32_MISC_ENABLE, 0x400c51889, false),
+	MSR_TEST(MSR_IA32_MISC_ENABLE, 0x400c51809, false),
 	MSR_TEST(MSR_IA32_CR_PAT, 0x07070707, false),
 	MSR_TEST(MSR_FS_BASE, addr_64, true),
 	MSR_TEST(MSR_GS_BASE, addr_64, true),
@@ -59,6 +59,8 @@  static void test_msr_rw(struct msr_info *msr, unsigned long long val)
 	 */
 	if (msr->index == MSR_EFER)
 		val |= orig;
+	if (msr->index == MSR_IA32_MISC_ENABLE)
+		val |= MSR_IA32_MISC_ENABLE_EMON & orig;
 	wrmsr(msr->index, val);
 	r = rdmsr(msr->index);
 	wrmsr(msr->index, orig);