Patchwork [2/6] kvm: add kvmclock to its second bit

login
register
mail settings
Submitter Marcelo Tosatti
Date April 16, 2011, 10:10 p.m.
Message ID <8f53372986d7726c02fe0147e45be504a5208edc.1302991808.git.mtosatti@redhat.com>
Download mbox | patch
Permalink /patch/91505/
State New
Headers show

Comments

Marcelo Tosatti - April 16, 2011, 10:10 p.m.
From: Glauber Costa <glommer@redhat.com>

We have two bits that can represent kvmclock in cpuid.
They signal the guest which msr set to use. When we tweak flags
involving this value - specially when we use "-", we have to act on both.

Besides adding it to the kvm features list, we also have to "break" the
assumption represented by the break in lookup_feature.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
 target-i386/cpuid.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

Patch

diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index 814d13e..5e48d35 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -73,7 +73,7 @@  static const char *ext3_feature_name[] = {
 };
 
 static const char *kvm_feature_name[] = {
-    "kvmclock", "kvm_nopiodelay", "kvm_mmu", NULL, "kvm_asyncpf", NULL, NULL, NULL,
+    "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL,
     NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
     NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
     NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
@@ -193,7 +193,6 @@  static int lookup_feature(uint32_t *pval, const char *s, const char *e,
     for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc)
         if (*ppc && !altcmp(s, e, *ppc)) {
             *pval |= mask;
-            break;
         }
     return (mask ? 1 : 0);
 }