From: Yinghai Lu <yinghai@kernel.org>
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: checkt rev 3 fadt correctly for physical_apic bit
Date: Tue, 28 Oct 2008 00:34:59 -0700 [thread overview]
Message-ID: <4906C0A3.2070009@kernel.org> (raw)
Impact: fix fadt version checking
FADT2_REVISION_ID is 3 aka rev 3 FADT. so need to use >= instead of >
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/kernel/genapic_flat_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/arch/x86/kernel/genapic_flat_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/genapic_flat_64.c
+++ linux-2.6/arch/x86/kernel/genapic_flat_64.c
@@ -197,7 +197,7 @@ static int physflat_acpi_madt_oem_check(
* regardless of how many processors are present (x86_64 ES7000
* is an example).
*/
- if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
+ if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
printk(KERN_DEBUG "system APIC only can use physical flat");
return 1;
reply other threads:[~2008-10-28 7:36 UTC|newest]
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