From: Yinghai Lu <yhlu.kernel@gmail.com>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86: amd opteron TOM2 mask val fix
Date: Mon, 12 May 2008 17:40:39 -0700 [thread overview]
Message-ID: <200805121740.40070.yhlu.kernel@gmail.com> (raw)
there is typo with the mask. need to remove that extra 0. to avoid 4bits was cleared.
Signed-off-by: Yinghal Lu <yhlu.kernel@gmail.com>
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/generic.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/generic.c
@@ -233,7 +233,7 @@ void __init get_mtrr_state(void)
mtrr_tom2 = high;
mtrr_tom2 <<= 32;
mtrr_tom2 |= low;
- mtrr_tom2 &= 0xffffff8000000ULL;
+ mtrr_tom2 &= 0xffffff800000ULL;
}
if (mtrr_show) {
int high_width;
Index: linux-2.6/arch/x86/pci/k8-bus_64.c
===================================================================
--- linux-2.6.orig/arch/x86/pci/k8-bus_64.c
+++ linux-2.6/arch/x86/pci/k8-bus_64.c
@@ -384,7 +384,7 @@ static int __init early_fill_mp_bus_info
/* need to take out [0, TOM) for RAM*/
address = MSR_K8_TOP_MEM1;
rdmsrl(address, val);
- end = (val & 0xffffff8000000ULL);
+ end = (val & 0xffffff800000ULL);
printk(KERN_INFO "TOM: %016lx aka %ldM\n", end, end>>20);
if (end < (1ULL<<32))
update_range(range, 0, end - 1);
@@ -478,7 +478,7 @@ static int __init early_fill_mp_bus_info
/* TOP_MEM2 */
address = MSR_K8_TOP_MEM2;
rdmsrl(address, val);
- end = (val & 0xffffff8000000ULL);
+ end = (val & 0xffffff800000ULL);
printk(KERN_INFO "TOM2: %016lx aka %ldM\n", end, end>>20);
update_range(range, 1ULL<<32, end - 1);
}
next reply other threads:[~2008-05-13 0:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-13 0:40 Yinghai Lu [this message]
2008-05-13 13:01 ` [PATCH] x86: amd opteron TOM2 mask val fix Ingo Molnar
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