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| author | Avi Kivity <avi@redhat.com> | 2009-05-03 17:04:03 +0300 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2009-05-08 15:42:52 -0500 |
| commit | 02b049df49b3f2709130d4e01838314697a4cdfc (patch) | |
| tree | 59cd0cd24978c194b27363acb418a56b23e3186a /target-i386 | |
| parent | c6fa82c4e90d629e16f8dda990f63cec73103cac (diff) | |
| download | qemu-02b049df49b3f2709130d4e01838314697a4cdfc.tar.gz | |
Fix x86 feature modifications for features that set multiple bits
QEMU allows adding or removing cpu features by using the syntax '-cpu +feature'
or '-cpu -feature'. Some cpuid features cause more than one bit to be set or
cleared; but QEMU stops after just one bit has been modified, causing the
feature bits to be inconsistent.
Fix by allowing all feature bits corresponding to a given name to be set.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/helper.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 88585b814b..0c9113398e 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -66,28 +66,31 @@ static void add_flagname_to_bitmaps(char *flagname, uint32_t *features, uint32_t *ext3_features) { int i; + int found = 0; for ( i = 0 ; i < 32 ; i++ ) if (feature_name[i] && !strcmp (flagname, feature_name[i])) { *features |= 1 << i; - return; + found = 1; } for ( i = 0 ; i < 32 ; i++ ) if (ext_feature_name[i] && !strcmp (flagname, ext_feature_name[i])) { *ext_features |= 1 << i; - return; + found = 1; } for ( i = 0 ; i < 32 ; i++ ) if (ext2_feature_name[i] && !strcmp (flagname, ext2_feature_name[i])) { *ext2_features |= 1 << i; - return; + found = 1; } for ( i = 0 ; i < 32 ; i++ ) if (ext3_feature_name[i] && !strcmp (flagname, ext3_feature_name[i])) { *ext3_features |= 1 << i; - return; + found = 1; } - fprintf(stderr, "CPU feature %s not found\n", flagname); + if (!found) { + fprintf(stderr, "CPU feature %s not found\n", flagname); + } } typedef struct x86_def_t { |