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>

diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
index 7804389ee0059eb8f4be589cccd24a2623f9567f..19b14f7ef9f1c3945845ca9423e00ba2ba5851d8 100644 (file)
--- a/arch/x86/boot/cpucheck.c
+++ b/arch/x86/boot/cpucheck.c
@@ -46,12 +46,12 @@ static const u32 req_flags[NCAPINTS] =
 {
        REQUIRED_MASK0,
        REQUIRED_MASK1,
-       REQUIRED_MASK2,
-       REQUIRED_MASK3,
+       0, /* REQUIRED_MASK2 not implemented in this file */
+       0, /* REQUIRED_MASK3 not implemented in this file */
        REQUIRED_MASK4,
-       REQUIRED_MASK5,
+       0, /* REQUIRED_MASK5 not implemented in this file */
        REQUIRED_MASK6,
-       REQUIRED_MASK7,
+       0, /* REQUIRED_MASK7 not implemented in this file */
 };
 
 #define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))