[patch 092/198] x86_64-always-use-cpuid-80000008-to-figure-out-mtrr fix

[akpm@osdl.org]

From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>

We need to use the size_and_mask in set_mtrr_var_ranges(which is called 
while programming MTRR's for AP's

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 25-akpm/arch/i386/kernel/cpu/mtrr/generic.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff -puN arch/i386/kernel/cpu/mtrr/generic.c~x86_64-always-use-cpuid-80000008-to-figure-out-mtrr-fix arch/i386/kernel/cpu/mtrr/generic.c
--- 25/arch/i386/kernel/cpu/mtrr/generic.c~x86_64-always-use-cpuid-80000008-to-figure-out-mtrr-fix	2005-04-12 03:21:25.075324872 -0700
+++ 25-akpm/arch/i386/kernel/cpu/mtrr/generic.c	2005-04-12 03:21:25.078324416 -0700
@@ -193,7 +193,8 @@ static int set_mtrr_var_ranges(unsigned 
 
 	rdmsr(MTRRphysBase_MSR(index), lo, hi);
 	if ((vr->base_lo & 0xfffff0ffUL) != (lo & 0xfffff0ffUL)
-	    || (vr->base_hi & 0xfUL) != (hi & 0xfUL)) {
+	    || (vr->base_hi & (size_and_mask >> (32 - PAGE_SHIFT))) !=
+		(hi & (size_and_mask >> (32 - PAGE_SHIFT)))) {
 		mtrr_wrmsr(MTRRphysBase_MSR(index), vr->base_lo, vr->base_hi);
 		changed = TRUE;
 	}
@@ -201,7 +202,8 @@ static int set_mtrr_var_ranges(unsigned 
 	rdmsr(MTRRphysMask_MSR(index), lo, hi);
 
 	if ((vr->mask_lo & 0xfffff800UL) != (lo & 0xfffff800UL)
-	    || (vr->mask_hi & 0xfUL) != (hi & 0xfUL)) {
+	    || (vr->mask_hi & (size_and_mask >> (32 - PAGE_SHIFT))) !=
+		(hi & (size_and_mask >> (32 - PAGE_SHIFT)))) {
 		mtrr_wrmsr(MTRRphysMask_MSR(index), vr->mask_lo, vr->mask_hi);
 		changed = TRUE;
 	}
_
-
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