[PATCH] i386: Don't discard upper 32bits of HWCR on K8

Need to use long long, not long when RMWing a MSR. I think
it's harmless right now, but still should be better fixed
if AMD adds any bits in the upper 32bit of HWCR.

Bug was introduced with the TLB flush filter fix for i386

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/i386/kernel/cpu/amd.c b/arch/i386/kernel/cpu/amd.c
index 4c1ddf2..53a1681 100644 (file)
--- a/arch/i386/kernel/cpu/amd.c
+++ b/arch/i386/kernel/cpu/amd.c
@@ -29,7 +29,7 @@ static void __init init_amd(struct cpuinfo_x86 *c)
        int r;
 
 #ifdef CONFIG_SMP
-       unsigned long value;
+       unsigned long long value;
 
        /* Disable TLB flush filter by setting HWCR.FFDIS on K8
         * bit 6 of msr C001_0015