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From: Gleb Natapov <gleb@redhat.com>
To: avi@redhat.com, mtosatti@redhat.com
Cc: kvm@vger.kernel.org
Subject: [PATCH RESENT] fix 80000001.EDX supported bit filtering
Date: Tue, 11 May 2010 17:15:38 +0300	[thread overview]
Message-ID: <20100511141538.GQ2504@redhat.com> (raw)

On AMD some bits from 1.EDX are reported in 80000001.EDX. The mask used
to copy bits from 1.EDX to 80000001.EDX is incorrect resulting in
unsupported features passed into a guest.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
----
Resent since Avi's email bounced first time.

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 76c1adb..6463390 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -111,7 +111,7 @@ uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function, int reg)
                      * so add missing bits according to the AMD spec:
                      */
                     cpuid_1_edx = kvm_arch_get_supported_cpuid(env, 1, R_EDX);
-                    ret |= cpuid_1_edx & 0xdfeff7ff;
+                    ret |= cpuid_1_edx & 0x183f7ff;
                     break;
                 }
                 break;
--
			Gleb.

                 reply	other threads:[~2010-05-11 14:15 UTC|newest]

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