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target/i386: enable monitor and ucode revision with -cpu max

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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <20200217162316.2464-7-pbonzini@redhat.com>
Patchwork-id: 93910
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 6/6] target/i386: enable monitor and ucode revision with -cpu max
Bugzilla: 1791648
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Maxim Levitsky <mlevitsk@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

These two features were incorrectly tied to host_cpuid_required rather than
cpu->max_features.  As a result, -cpu max was not enabling either MONITOR
features or ucode revision.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit be02cda3afde60d219786e23c3f8edb53aec8e17)

[RHEL7: context, upstream uses g_autofree]

Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
This commit is contained in:
Chen Qun 2020-02-17 16:23:16 +00:00
parent 2e461358e3
commit b84eae3513
1 changed files with 48 additions and 0 deletions
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48
target-i386-enable-monitor-and-ucode-revision-with-c.patch Normal file
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@ -0,0 +1,48 @@
From 8470399d9508b3b56d625866ea235c2a5b4cb39a Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 17 Feb 2020 16:23:16 +0000
Subject: [PATCH] target/i386: enable monitor and ucode revision with -cpu max
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <20200217162316.2464-7-pbonzini@redhat.com>
Patchwork-id: 93910
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 6/6] target/i386: enable monitor and ucode revision with -cpu max
Bugzilla: 1791648
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Maxim Levitsky <mlevitsk@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
These two features were incorrectly tied to host_cpuid_required rather than
cpu->max_features. As a result, -cpu max was not enabling either MONITOR
features or ucode revision.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit be02cda3afde60d219786e23c3f8edb53aec8e17)
[RHEL7: context, upstream uses g_autofree]
Signed-off-by: Danilo C. L. de Paula <ddepaula@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 22e0e89718..6147cd419a 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6317,7 +6317,9 @@ static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
g_free(name);
goto out;
}
+ }
+ if (cpu->max_features && accel_uses_host_cpuid()) {
if (enable_cpu_pm) {
host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx,
&cpu->mwait.ecx, &cpu->mwait.edx);
--
2.27.0