kernel/include/asm-i386/processor.h, branch linux-rolling-stable

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

2007-10-11T09:20:03Z

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

x86: Replace NSC/Cyrix specific chipset access macros by inlined functions.

2007-07-22T18:03:38Z

Due to index register access ordering problems, when using macros a line like this fails (and does nothing): setCx86(CX86_CCR2, getCx86(CX86_CCR2) | 0x88); With inlined functions this line will work as expected. Note about a side effect: Seems on Geode GX1 based systems the "suspend on halt power saving feature" was never enabled due to this wrong macro expansion. With inlined functions it will be enabled, but this will stop the TSC when the CPU runs into a HLT instruction. Kernel output something like this: Clocksource tsc unstable (delta = -472746897 ns) This is the 3rd version of this patch. - Adding missed arch/i386/kernel/cpu/mtrr/state.c Thanks to Andres Salomon - Adding some big fat comments into the new header file Suggested by Andi Kleen AK: fixed x86-64 compilation Signed-off-by: Juergen Beisert Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds

x86: remove support for the Rise CPU

2007-07-22T01:37:10Z

The Rise CPUs were only very short-lived, and there are no reports of anyone both owning one and running Linux on it. Googling for the printk string "CPU: Rise iDragon" didn't find any dmesg available online. If it turns out that against all expectations there are actually users reverting this patch would be easy. This patch will make the kernel images smaller by a few bytes for all i386 users. Signed-off-by: Adrian Bunk Acked-by: Dave Jones Signed-off-by: Andrew Morton Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds

make seccomp zerocost in schedule

2007-07-16T16:05:50Z

This follows a suggestion from Chuck Ebbert on how to make seccomp absolutely zerocost in schedule too. The only remaining footprint of seccomp is in terms of the bzImage size that becomes a few bytes (perhaps even a few kbytes) larger, measure it if you care in the embedded. Signed-off-by: Andrea Arcangeli Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Use a new CPU feature word to cover features that are spread around

2007-07-12T17:55:54Z

Some Intel features are spread around in different CPUID leafs like 0x5, 0x6 and 0xA. Make this feature detection code common across i386 and x86_64. Display Intel Dynamic Acceleration feature in /proc/cpuinfo. This feature will be enabled automatically by current acpi-cpufreq driver. Refer to Intel Software Developer's Manual for more details about the feature. Thanks to hpa (H Peter Anvin) for the making the actual code detecting the scattered features data-driven. Signed-off-by: Venkatesh Pallipadi Signed-off-by: H. Peter Anvin Signed-off-by: Linus Torvalds

i386: move common parts of smp into their own file

2007-05-15T15:54:00Z

Several parts of kernel/smp.c and smpboot.c are generally useful for other subarchitectures and paravirt_ops implementations, so make them available for reuse. Signed-off-by: Jeremy Fitzhardinge Acked-by: Chris Wright Cc: James Bottomley Cc: Eric W. Biederman Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] i386: Fix UP gdt bugs

2007-05-02T17:27:16Z

Fixes two problems with the GDT when compiling for uniprocessor: - There's no percpu segment, so trying to load its selector into %fs fails. Use a null selector instead. - The real gdt needs to be loaded at some point. Do it in cpu_init(). Signed-off-by: Chris Wright Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andi Kleen Cc: Rusty Russell

[PATCH] i386: Convert PDA into the percpu section

2007-05-02T17:27:16Z

Currently x86 (similar to x84-64) has a special per-cpu structure called "i386_pda" which can be easily and efficiently referenced via the %fs register. An ELF section is more flexible than a structure, allowing any piece of code to use this area. Indeed, such a section already exists: the per-cpu area. So this patch: (1) Removes the PDA and uses per-cpu variables for each current member. (2) Replaces the __KERNEL_PDA segment with __KERNEL_PERCPU. (3) Creates a per-cpu mirror of __per_cpu_offset called this_cpu_off, which can be used to calculate addresses for this CPU's variables. (4) Simplifies startup, because %fs doesn't need to be loaded with a special segment at early boot; it can be deferred until the first percpu area is allocated (or never for UP). The result is less code and one less x86-specific concept. Signed-off-by: Rusty Russell Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Andi Kleen Cc: Andi Kleen

[PATCH] i386: i386 separate hardware-defined TSS from Linux additions

2007-05-02T17:27:13Z

On Thu, 2007-03-29 at 13:16 +0200, Andi Kleen wrote: > Please clean it up properly with two structs. Not sure about this, now I've done it. Running it here. If you like it, I can do x86-64 as well. == lguest defines its own TSS struct because the "struct tss_struct" contains linux-specific additions. Andi asked me to split the struct in processor.h. Unfortunately it makes usage a little awkward. Signed-off-by: Rusty Russell Signed-off-by: Andi Kleen

[PATCH] x86: Clean up x86 control register and MSR macros (corrected)

2007-05-02T17:27:12Z

This patch is based on Rusty's recent cleanup of the EFLAGS-related macros; it extends the same kind of cleanup to control registers and MSRs. It also unifies these between i386 and x86-64; at least with regards to MSRs, the two had definitely gotten out of sync. Signed-off-by: H. Peter Anvin Signed-off-by: Andi Kleen