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2008-01-30x86: cpa: remove unnecessary masking of addressAndi Kleen
virt_to_page does not care about the bits below the page granuality. So don't mask them. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: cpa: use wbinvd() macro instead of inline assembly in 64bit c_p_a()Andi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: early_ioremap_init(), enhance warningsIngo Molnar
enhance the debug warning in early_ioremap_init(). Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix EISA ioremapIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix early_ioremap()/btmapIngo Molnar
fix a long-standing weakness of the early-ioremap allocator: it uses a single pgd entry for the boot mappings, and was not properly protecting itself against crossing a 2MB (4MB) boundary. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add early_ioremap() leak detectionIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: make early_ioremap_debug early_paramHuang, Ying
This patch makes "early_ioremap_debug" a early parameter, because "early_ioreamp/early_iounmap" is only used during early boot stage. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: early_ioremap(), debuggingIngo Molnar
add early_ioremap() debug printouts via the early_ioremap_debug boot option. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add debug warnings to early_ioremap()Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: increase the number of boot-mappingsIngo Molnar
increase max early_ioremap() remapping size from 64K to 256K. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: enhance early_ioremap()Ingo Molnar
- allow nesting of up to 4 levels Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: early_ioremap_reset fixHuang, Ying
This patch fixes a bug of early_ioremap_reset. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86 32-bit boot: rename bt_ioremap() to early_ioremap()Huang, Ying
This patch renames bt_ioremap to early_ioremap, which is used in x86_64. This makes it easier to merge i386 and x86_64 usage. [ mingo@elte.hu: fix ] Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: replace boot_ioremap() with enhanced bt_ioremap() - remove boot_ioremap()Huang, Ying
This patch replaces boot_ioremap invokation with bt_ioremap and removes the boot_ioremap implementation. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30i386 boot: replace boot_ioremap with enhanced bt_ioremap - enhance bt_ioremapHuang, Ying
This patch makes it possible for bt_ioremap() to be used before paging_init(), via providing an early implementation of set_fixmap() that can be used before paging_init(). This way boot_ioremap() can be replaced by bt_ioremap(). Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: set strong uncacheable where UC is really desiredSiddha, Suresh B
Also use _PAGE_PWT for all the mappings which need uncache mapping. Instead of existing PAT2 which is UC- (and can be overwritten by MTRRs), we now use PAT3 which is strong uncacheable. This makes it consistent with pgprot_noncached() Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: use __PAGE_KERNEL_EXEC in ioremap_64.cJoerg Roedel
This patch replaces the manual permission setup for pages in ioremap_64.c with the pre-defined __PAGE_KERNEL_EXEC value. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: cleanup boot_ioremap_32.cThomas Gleixner
Coding style cleanup before modifying the file. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: clean up arch/x86/mm/pageattr-test.cIngo Molnar
fix 15 checkpatch warnings. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: c_p_a(), add simple self test at bootAndi Kleen
Since change_page_attr() is tricky code it is good to have some regression test code. This patch maps and unmaps some random pages in the direct mapping at boot and then dumps the state and does some simple sanity checks. Add it with a CONFIG option. Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: return the page table level in lookup_address()Ingo Molnar
based on this patch from Andi Kleen: | Subject: CPA: Return the page table level in lookup_address() | From: Andi Kleen <ak@suse.de> | | Needed for the next change. | | And change all the callers. and ported it to x86.git. Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add pte accessors for the global bitAndi Kleen
Needed for some test code. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: clean up pte_execAndi Kleen
- Rename it to pte_exec() from pte_exec_kernel(). There is nothing kernel specific in there. - Move it into the common file because _PAGE_NX is 0 on !PAE and then pte_exec() will be always evaluate to true. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add dump_pagetable helper to X86_32Harvey Harrison
Similar to x86 64-bit. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30c_p_a(): do a simple self test at bootAndi Kleen
When CONFIG_DEBUG_RODATA is enabled undo the ro mapping and redo it again. This gives some simple testing for change_page_attr(). Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: clean up arch/x86/mm/pageattr_64.cIngo Molnar
clean up arch/x86/mm/pageattr_64.c. no code changed: text data bss dec hex filename 1751 16 0 1767 6e7 pageattr_64.o.before 1751 16 0 1767 6e7 pageattr_64.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: clean up arch/x86/mm/pageattr_32.cIngo Molnar
clean up arch/x86/mm/pageattr_32.c. no code changed: text data bss dec hex filename 1255 40 0 1295 50f pageattr_32.o.before 1255 40 0 1295 50f pageattr_32.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: change ioremap() to default to uncachedIngo Molnar
Prepare ioremap() to default to uncached. This will be the safest - but first we have to fix CPA. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix recursion in arch/x86/kernel/cpu/mcheck/mce_amd_64.cYinghai Lu
remove the recursion from this function. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: allocate and initialize unshared pmdsJeremy Fitzhardinge
If SHARED_KERNEL_PMD is false, then we need to allocate and initialize the kernel pmd. We can easily piggy-back this onto the existing pmd prepopulation code. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: preallocate pmds at pgd creation timeJeremy Fitzhardinge
In PAE mode, an update to the pgd requires a cr3 reload to make sure the processor notices the changes. Since this also has the side-effect of flushing the tlb, its an expensive operation which we want to avoid where possible. This patch mitigates the cost of installing the initial set of pmds on process creation by preallocating them when the pgd is allocated. This avoids up to three tlb flushes during exec, as it creates the new process address space while the pagetable is in active use. The pmds will be freed as part of the normal pagetable teardown in free_pgtables, which is called in munmap and process exit. However, free_pgtables will only free parts of the pagetable which actually contain mappings, so stray pmds may still be attached to the pgd at pgd_free time. We must mop them up to prevent a memory leak. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: William Irwin <wli@holomorphy.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30xen: deal with pmd being allocated/freedJeremy Fitzhardinge
Deal properly with pmd-level pages being allocated and freed dynamically. We can handle them more or less the same as pte pages. Also, deal with early_ioremap pagetable manipulations. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: demacro asm-x86/pgalloc_32.hJeremy Fitzhardinge
Convert macros into inline functions, for better type-checking. This patch required a little bit of fiddling with headers in order to make __(pte|pmd)_free_tlb inline rather than macros. asm-generic/tlb.h includes asm/pgalloc.h, though it doesn't directly use any pgalloc definitions. I removed this include to avoid an include cycle, but it may cause secondary compile failures by things depending on the indirect inclusion; arch/x86/mm/hugetlbpage.c was one such place; there may be others. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add mm parameter to paravirt_alloc_pdJeremy Fitzhardinge
Add mm to paravirt_alloc_pd, partly to make it consistent with paravirt_alloc_pt, and because later changes will make use of it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30xen: fix mismerge in masking pte flagsJeremy Fitzhardinge
Looks like a mismerge/misapply dropped one of the cases of pte flag masking for Xen. Also, only mask the flags for present ptes. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: change aper valid checking sequenceYinghai Lu
old sequence: size ==> >4G ==> point to RAM changed to: >4G ==> point to RAM ==> size some bios even leave aper to unclear, so check size at last. To avoid reporting: Node 0: Aperture @ 4a42000000 size 32 MB Aperture too small (32 MB) with this change we will get: Node 0: Aperture @ 4a42000000 size 32 MB Aperture beyond 4G. Ignoring. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: force enable HPET on (some?) ICH9 boardsAlistair John Strachan
Some consumer ICH9 boards (such as the Abit IP35 Pro) do not provide a BIOS option for enabling the HPET. The same ICH workaround used for 6,7,8 can be applied to 9. Here I enable the only PCI id that was visible on my system. I have confirmed the HPETs work both from userspace and as a clocksource for the running kernel (2.6.24 here) after applying this patch. Force enabled HPET at base address 0xfed00000 hpet clockevent registered hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0 hpet0: 4 64-bit timers, 14318180 Hz Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: not set boot cpu in cpu_online_map in smp_prepare_boot_cpu()Yinghai Lu
in init/main.c boot_cpu_init() does that before. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: not set boot cpu in cpu_present_map againYinghai Lu
in init/main.c boot_cpu_init() already does that before setup_arch Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify arch/x86/boot/compressed/misc_??.cIan Campbell
Remainder of unification can occur inplace. size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify variable names in arch/x86/boot/compressed/misc_??.cIan Campbell
size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify headers in arch/x86/boot/compressed/misc_??.cIan Campbell
size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify whitespace and comments in arch/x86/boot/compressed/misc_??.cIan Campbell
size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify strings in arch/x86/boot/compressed/misc_??.cIan Campbell
There seems to be a preference for the 64 bit version so use that on 32 bit and drop the stray leading "." Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify arch/x86/boot/compressed/vmlinux_??.scrIan Campbell
The files are now identical so merge them. size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: switch to .rodata.compressed in arch/x86/boot/compressed/vmlinux_??.scrIan Campbell
vmlinux_64 and vmlinux_32.scr are now identical size shows an expected movement from .text to .rodata and 4 extra bytes of padding. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify whitespace in arch/x86/boot/compressed/vmlinux_??.scrIan Campbell
size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: unify whitespace and comments in arch/x86/boot/compressed/vmlinux_??.ldsIan Campbell
size reports no change in arch/x86/boot/compressed/vmlinux. Signed-off-by: Ian Campbell <ijc@hellion.org.uk> Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix usage of .section .sched.text in assembler codeSam Ravnborg
Without this patch the linker will generate a section named .sched.text.1 which is unexpected. This is because the gcc generated section has "ax" but the assembler usage of .sched.text lacks the "ax" specifier. It would be better to have a definition we could use from assembler code but I did not find a suitable header file for it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: fix section mismatch warning in setup_64.cSam Ravnborg
Fix the following warning: WARNING: arch/x86/kernel/built-in.o(.cpuinit.text+0x7a3): Section mismatch: reference to .init.text:amd_detect_cmp in 'init_amd' The function amd_detect_cmp were annotated __init and was only used from init_amd() which are annotated __cpuinit. Annotate amd_detect_cmp() with _cpuinit to fix it. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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