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sparc32: drop sun4c user stack checking routine

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With this we no longer do any run-time patchings of traps.
So drop the function + macro to support this.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sam Ravnborg
2012-05-11 11:35:13 +00:00
committed by David S. Miller
parent e098ff92f6
commit ef136bc91e
3 changed files with 6 additions and 91 deletions
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14
arch/sparc/mm/srmmu.c
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@@ -2134,19 +2134,6 @@ extern unsigned long spwin_mmu_patchme, fwin_mmu_patchme,
extern unsigned long spwin_srmmu_stackchk, srmmu_fwin_stackchk,
tsetup_srmmu_stackchk, srmmu_rett_stackchk;
#define PATCH_BRANCH(insn, dest) do { \
iaddr = &(insn); \
daddr = &(dest); \
*iaddr = SPARC_BRANCH((unsigned long) daddr, (unsigned long) iaddr); \
} while(0)
static void __init patch_window_trap_handlers(void)
{
unsigned long *iaddr, *daddr;
PATCH_BRANCH(rtrap_mmu_patchme, srmmu_rett_stackchk);
}
#ifdef CONFIG_SMP
/* Local cross-calls. */
static void smp_flush_page_for_dma(unsigned long page)
@@ -2270,7 +2257,6 @@ void __init ld_mmu_srmmu(void)
BTFIXUPSET_CALL(pgoff_to_pte, srmmu_pgoff_to_pte, BTFIXUPCALL_NORM);
get_srmmu_type();
patch_window_trap_handlers();
#ifdef CONFIG_SMP
/* El switcheroo... */