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authorH. Peter Anvin <hpa@linux.intel.com>2010-06-10 00:10:43 +0000
committerH. Peter Anvin <hpa@zytor.com>2010-07-07 10:36:28 -0700
commit83a7a2ad2a9173dcabc05df0f01d1d85b7ba1c2c (patch)
tree06dfa61fa406d35694d9dfc1c9c4153ead231b78 /arch/x86/kernel/entry_32.S
parent140236b4b1c749c9b795ea3d11558a0eb5a3a080 (diff)
x86, alternatives: Use 16-bit numbers for cpufeature index
We already have cpufeature indicies above 255, so use a 16-bit number for the alternatives index. This consumes a padding field and so doesn't add any size, but it means that abusing the padding field to create assembly errors on overflow no longer works. We can retain the test simply by redirecting it to the .discard section, however. [ v3: updated to include open-coded locations ] Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> LKML-Reference: <tip-f88731e3068f9d1392ba71cc9f50f035d26a0d4f@git.kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
-rw-r--r--arch/x86/kernel/entry_32.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index cd49141cf15..7862cf510ea 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -914,7 +914,7 @@ ENTRY(simd_coprocessor_error)
.balign 4
.long 661b
.long 663f
- .byte X86_FEATURE_XMM
+ .word X86_FEATURE_XMM
.byte 662b-661b
.byte 664f-663f
.previous