From: Gal Hammer <ghammer@redhat.com>
To: qemu-devel@nongnu.org
Cc: Gal Hammer <ghammer@redhat.com>, Eduardo Habkost <ehabkost@redhat.com>
Subject: [PATCH] target/i386: Add PDCM feature bit when when CPU's pmu property is enabled
Date: Tue, 28 Jul 2020 09:42:50 +0300 [thread overview]
Message-ID: <20200728064250.168368-1-ghammer@redhat.com> (raw)
The PDCM feature bit is not enabled when adding the pmu property to a CPU
without this capability (e.g. -cpu qemu64,pmu).
Signed-off-by: Gal Hammer <ghammer@redhat.com>
---
target/i386/cpu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 588f32e136..6e1c8b6019 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5535,6 +5535,8 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
}
if (!cpu->enable_pmu) {
*ecx &= ~CPUID_EXT_PDCM;
+ } else {
+ *ecx |= CPUID_EXT_PDCM;
}
break;
case 2:
--
2.26.2
reply other threads:[~2020-07-28 6:46 UTC|newest]
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