kernel/git/stable/linux.git/include/asm-x86/mtrr.h, branch master

x86, um: ... and asm-x86 move

2008-10-23T05:55:20+00:00

Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin

x86: consolidate header guards

2008-07-22T19:31:34+00:00

This patch is the result of an automatic script that consolidates the format of all the headers in include/asm-x86/. The format: 1. No leading underscore. Names with leading underscores are reserved. 2. Pathname components are separated by two underscores. So we can distinguish between mm_types.h and mm/types.h. 3. Everything except letters and numbers are turned into single underscores. Signed-off-by: Vegard Nossum

include/asm-x86/mtrr.h: checkpatch cleanups - formatting only

2008-04-17T15:41:25+00:00

Signed-off-by: Joe Perches Signed-off-by: Ingo Molnar

x86: enable PAT for amd k8 and fam10h

2008-04-17T15:41:20+00:00

make known_pat_cpu to think amd k8 and fam10h is ok too. also make tom2 below to be WRBACK Signed-off-by: Yinghai Lu Signed-off-by: Ingo Molnar

x86: PAT fix

2008-04-17T15:41:20+00:00

build fix for !CONFIG_MTRR. Signed-off-by: Ingo Molnar

x86: PAT infrastructure patch

2008-04-17T15:41:19+00:00

Sets up pat_init() infrastructure. PAT MSR has following setting. PAT |PCD ||PWT ||| 000 WB _PAGE_CACHE_WB 001 WC _PAGE_CACHE_WC 010 UC- _PAGE_CACHE_UC_MINUS 011 UC _PAGE_CACHE_UC We are effectively changing WT from boot time setting to WC. UC_MINUS is used to provide backward compatibility to existing /dev/mem users(X). reserve_memtype and free_memtype are new interfaces for maintaining alias-free mapping. It is currently implemented in a simple way with a linked list and not optimized. reserve and free tracks the effective memory type, as a result of PAT and MTRR setting rather than what is actually requested in PAT. pat_init piggy backs on mtrr_init as the rules for setting both pat and mtrr are same. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Suresh Siddha Signed-off-by: Ingo Molnar

x86, 32-bit: trim memory not covered by wb mtrrs

2008-01-30T12:33:18+00:00

On some machines, buggy BIOSes don't properly setup WB MTRRs to cover all available RAM, meaning the last few megs (or even gigs) of memory will be marked uncached. Since Linux tends to allocate from high memory addresses first, this causes the machine to be unusably slow as soon as the kernel starts really using memory (i.e. right around init time). This patch works around the problem by scanning the MTRRs at boot and figuring out whether the current end_pfn value (setup by early e820 code) goes beyond the highest WB MTRR range, and if so, trimming it to match. A fairly obnoxious KERN_WARNING is printed too, letting the user know that not all of their memory is available due to a likely BIOS bug. Something similar could be done on i386 if needed, but the boot ordering would be slightly different, since the MTRR code on i386 depends on the boot_cpu_data structure being setup. This patch fixes a bug in the last patch that caused the code to run on non-Intel machines (AMD machines apparently don't need it and it's untested on other non-Intel machines, so best keep it off). Further enhancements and fixes from: Yinghai Lu Andi Kleen Signed-off-by: Jesse Barnes Tested-by: Justin Piszcz Cc: Andi Kleen Cc: "Eric W. Biederman" Cc: Yinghai Lu Signed-off-by: Andrew Morton Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner

x86: mtrr use type bool [RESEND AGAIN]

2008-01-30T12:30:31+00:00

This is a janitorish patch to 1) remove private TRUE/FALSE #def's in favor of using the standard enum from linux/stddef.h and 2) switch the variables holding those values to type 'bool' (from linux/types.h) since it both seems more appropriate and allows for potentially better optimization. As a truly minor aside, I removed a couple of comments documenting a 'do_safe' parameter that seems to no longer exist. Signed-off-by: Paul Jimenez Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner

x86: merge mttr_32/64.h

2007-10-23T20:37:24+00:00

Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner

i386/x86_64: move headers to include/asm-x86

2007-10-11T09:20:03+00:00

Move the headers to include/asm-x86 and fixup the header install make rules Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar