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authorH. Peter Anvin <hpa@zytor.com>2008-08-15 18:36:31 -0400
committerH. Peter Anvin <hpa@zytor.com>2008-09-05 19:13:44 -0400
commitb74b06c5f6612a72298f37baa65460a59c26ca67 (patch)
treefe84425001df1425d37b0754e21f706ed9687052
parente6a5652fd156a286faadbf7a4062b5354d4e346e (diff)
x86: boot: stub out unimplemented CPU feature words
The CPU feature detection code in the boot code is somewhat minimal, and doesn't include all possible CPUID words. In particular, it doesn't contain the code for CPU feature words 2 (Transmeta), 3 (Linux-specific), 5 (VIA), or 7 (scattered). Zero them out, so we can still set those bits as known at compile time; in particular, this allows creating a Linux-specific NOPL flag and have it required (and therefore resolvable at compile time) in 64-bit mode. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
-rw-r--r--arch/x86/boot/cpucheck.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
index 4b9ae7c56748..4d3ff037201f 100644
--- a/arch/x86/boot/cpucheck.c
+++ b/arch/x86/boot/cpucheck.c
@@ -38,12 +38,12 @@ static const u32 req_flags[NCAPINTS] =
38{ 38{
39 REQUIRED_MASK0, 39 REQUIRED_MASK0,
40 REQUIRED_MASK1, 40 REQUIRED_MASK1,
41 REQUIRED_MASK2, 41 0, /* REQUIRED_MASK2 not implemented in this file */
42 REQUIRED_MASK3, 42 0, /* REQUIRED_MASK3 not implemented in this file */
43 REQUIRED_MASK4, 43 REQUIRED_MASK4,
44 REQUIRED_MASK5, 44 0, /* REQUIRED_MASK5 not implemented in this file */
45 REQUIRED_MASK6, 45 REQUIRED_MASK6,
46 REQUIRED_MASK7, 46 0, /* REQUIRED_MASK7 not implemented in this file */
47}; 47};
48 48
49#define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a)) 49#define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))