On Wed, 6 Jul 2005, Nigel Cunningham wrote:
> diff -ruNp 353-disable-highmem-tlb-flush-for-copyback.patch-old/mm/highmem.c 353-disable-highmem-tlb-flush-for-copyback.patch-new/mm/highmem.c
> --- 353-disable-highmem-tlb-flush-for-copyback.patch-old/mm/highmem.c 2005-06-20 11:47:32.000000000 +1000
> +++ 353-disable-highmem-tlb-flush-for-copyback.patch-new/mm/highmem.c 2005-07-04 23:14:20.000000000 +1000
> @@ -26,6 +26,7 @@
> #include <linux/init.h>
> #include <linux/hash.h>
> #include <linux/highmem.h>
> +#include <linux/suspend.h>
> #include <asm/tlbflush.h>
>
> static mempool_t *page_pool, *isa_page_pool;
> @@ -95,7 +96,10 @@ static void flush_all_zero_pkmaps(void)
>
> set_page_address(page, NULL);
> }
> - flush_tlb_kernel_range(PKMAP_ADDR(0), PKMAP_ADDR(LAST_PKMAP));
> + if (test_suspend_state(SUSPEND_FREEZE_SMP))
> + __flush_tlb();
> + else
> + flush_tlb_kernel_range(PKMAP_ADDR(0), PKMAP_ADDR(LAST_PKMAP));
> }
>
> static inline unsigned long map_new_virtual(struct page *page)
What state are the other processors in when you hit this path?
-
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