diff options
| author | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:59:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:59:11 -0800 |
| commit | 4522d58275f124105819723e24e912c8e5bf3cdd (patch) | |
| tree | b92c29014fadffe049c1925676037f0092b8d112 /arch/i386/mm/pageattr.c | |
| parent | 6cf24f031bc97cb5a7c9df3b6e73c45b628b2b28 (diff) | |
| parent | 64a26a731235b59c9d73bbe82c1f896d57400d37 (diff) | |
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (156 commits)
[PATCH] x86-64: Export smp_call_function_single
[PATCH] i386: Clean up smp_tune_scheduling()
[PATCH] unwinder: move .eh_frame to RODATA
[PATCH] unwinder: fully support linker generated .eh_frame_hdr section
[PATCH] x86-64: don't use set_irq_regs()
[PATCH] x86-64: check vector in setup_ioapic_dest to verify if need setup_IO_APIC_irq
[PATCH] x86-64: Make ix86 default to HIGHMEM4G instead of NOHIGHMEM
[PATCH] i386: replace kmalloc+memset with kzalloc
[PATCH] x86-64: remove remaining pc98 code
[PATCH] x86-64: remove unused variable
[PATCH] x86-64: Fix constraints in atomic_add_return()
[PATCH] x86-64: fix asm constraints in i386 atomic_add_return
[PATCH] x86-64: Correct documentation for bzImage protocol v2.05
[PATCH] x86-64: replace kmalloc+memset with kzalloc in MTRR code
[PATCH] x86-64: Fix numaq build error
[PATCH] x86-64: include/asm-x86_64/cpufeature.h isn't a userspace header
[PATCH] unwinder: Add debugging output to the Dwarf2 unwinder
[PATCH] x86-64: Clarify error message in GART code
[PATCH] x86-64: Fix interrupt race in idle callback (3rd try)
[PATCH] x86-64: Remove unwind stack pointer alignment forcing again
...
Fixed conflict in include/linux/uaccess.h manually
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/mm/pageattr.c')
| -rw-r--r-- | arch/i386/mm/pageattr.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c index 8564b6ae17e..ad91528bdc1 100644 --- a/arch/i386/mm/pageattr.c +++ b/arch/i386/mm/pageattr.c @@ -67,11 +67,17 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot, return base; } -static void flush_kernel_map(void *dummy) +static void flush_kernel_map(void *arg) { - /* Could use CLFLUSH here if the CPU supports it (Hammer,P4) */ - if (boot_cpu_data.x86_model >= 4) + unsigned long adr = (unsigned long)arg; + + if (adr && cpu_has_clflush) { + int i; + for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size) + asm volatile("clflush (%0)" :: "r" (adr + i)); + } else if (boot_cpu_data.x86_model >= 4) wbinvd(); + /* Flush all to work around Errata in early athlons regarding * large page flushing. */ @@ -173,9 +179,9 @@ __change_page_attr(struct page *page, pgprot_t prot) return 0; } -static inline void flush_map(void) +static inline void flush_map(void *adr) { - on_each_cpu(flush_kernel_map, NULL, 1, 1); + on_each_cpu(flush_kernel_map, adr, 1, 1); } /* @@ -217,9 +223,13 @@ void global_flush_tlb(void) spin_lock_irq(&cpa_lock); list_replace_init(&df_list, &l); spin_unlock_irq(&cpa_lock); - flush_map(); - list_for_each_entry_safe(pg, next, &l, lru) + if (!cpu_has_clflush) + flush_map(0); + list_for_each_entry_safe(pg, next, &l, lru) { + if (cpu_has_clflush) + flush_map(page_address(pg)); __free_page(pg); + } } #ifdef CONFIG_DEBUG_PAGEALLOC |