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de938c51d5
linux/arch/i386
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Bernhard Kaindl de938c51d5 [PATCH] i386: Enable support for fixed-range IORRs to keep RdMem & WrMem in sync 
If our copy of the MTRRs of the BSP has RdMem or WrMem set, and
we are running on an AMD64/K8 system, the boot CPU must have had
MtrrFixDramEn and MtrrFixDramModEn set (otherwise our RDMSR would
have copied these bits cleared), so we set them on this CPU as well.

This allows us to keep the AMD64/K8 RdMem and WrMem bits in sync
across the CPUs of SMP systems in order to fullfill the duty of
system software to "initialize and maintain MTRR consistency
across all processors." as written in the AMD and Intel manuals.

If an WRMSR instruction fails because MtrrFixDramModEn is not
set, I expect that also the Intel-style MTRR bits are not updated.

AK: minor cleanup, moved MSR defines around

Signed-off-by: Bernhard Kaindl <bk@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Dave Jones <davej@codemonkey.org.uk>
2007-05-02 19:27:17 +02:00
..
boot [PATCH] x86: deflate stack usage in lib/inflate.c 2007-05-02 19:27:15 +02:00
crypto [CRYPTO] api: Get rid of flags argument to setkey 2006-09-21 11:41:02 +10:00
kernel [PATCH] i386: Enable support for fixed-range IORRs to keep RdMem & WrMem in sync 2007-05-02 19:27:17 +02:00
lib [PATCH] i386: type cast clean up for find_next_zero_bit 2007-05-02 19:27:08 +02:00
mach-default [PATCH] clockevents: i386 drivers 2007-02-16 08:13:59 -08:00
mach-es7000 ACPICA: Remove duplicate table manager 2007-02-02 21:14:28 -05:00
mach-generic [PATCH] i386: modpost apic related warning fixes 2007-05-02 19:27:08 +02:00
mach-visws [PATCH] visws: sgivwfb as module needs exports 2006-12-08 08:29:07 -08:00
mach-voyager [PATCH] i386: Use per-cpu GDT immediately upon boot 2007-05-02 19:27:10 +02:00
math-emu [PATCH] i386: avoid gcc extension 2007-02-13 13:26:24 +01:00
mm [PATCH] i386: PARAVIRT: flush lazy mmu updates on kunmap_atomic 2007-05-02 19:27:15 +02:00
oprofile [PATCH] i386: Support Oprofile for AMD Family 10 CPUs 2007-05-02 19:27:06 +02:00
pci [PATCH] MSI-X: fix resume crash 2007-03-28 13:59:37 -07:00
power [PATCH] x86: Save and restore the fixed-range MTRRs of the BSP when suspending 2007-05-02 19:27:17 +02:00
defconfig [PATCH] i386: Update defconfig 2007-05-02 19:27:04 +02:00
Kconfig [PATCH] i386: Now that the VDSO can be relocated, we can support it in VMI configurations. 2007-05-02 19:27:16 +02:00
Kconfig.cpu [PATCH] i386: Add an option for the VIA C7 which sets appropriate L1 cache 2007-05-02 19:27:05 +02:00
Kconfig.debug [PATCH] i386: PARAVIRT: Remove CONFIG_DEBUG_PARAVIRT 2007-05-02 19:27:13 +02:00
Makefile [PATCH] x86: Drop cc-options call for all options supported in gcc 3.2+ 2007-05-02 19:27:06 +02:00
Makefile.cpu [PATCH] i386: Fix usage of -mtune when X86_GENERIC=y or CONFIG_MCORE2=y 2007-05-02 19:27:06 +02:00