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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2006-06-28 11:53:56 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-28 15:18:58 +1000 |
| commit | a240da35a1087804cbdc3faba949445e64d1eecb (patch) | |
| tree | 682cba196837dc7c31513dd53ae51f2c3e98d5ef /arch | |
| parent | 9b47569a9d410199aea6386917fd0662809c60be (diff) | |
| download | linux-3.10-a240da35a1087804cbdc3faba949445e64d1eecb.tar.gz linux-3.10-a240da35a1087804cbdc3faba949445e64d1eecb.tar.bz2 linux-3.10-a240da35a1087804cbdc3faba949445e64d1eecb.zip | |
[POWERPC] Remove unused function call_with_mmu_off
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kernel/misc_64.S | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index e8883d42c43..6bf4a463720 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -101,48 +101,6 @@ _GLOBAL(call___do_IRQ) blr #endif /* CONFIG_IRQSTACKS */ - /* - * To be called by C code which needs to do some operations with MMU - * disabled. Note that interrupts have to be disabled by the caller - * prior to calling us. The code called _MUST_ be in the RMO of course - * and part of the linear mapping as we don't attempt to translate the - * stack pointer at all. The function is called with the stack switched - * to this CPU emergency stack - * - * prototype is void *call_with_mmu_off(void *func, void *data); - * - * the called function is expected to be of the form - * - * void *called(void *data); - */ -_GLOBAL(call_with_mmu_off) - mflr r0 /* get link, save it on stackframe */ - std r0,16(r1) - mr r1,r5 /* save old stack ptr */ - ld r1,PACAEMERGSP(r13) /* get emerg. stack */ - subi r1,r1,STACK_FRAME_OVERHEAD - std r0,16(r1) /* save link on emerg. stack */ - std r5,0(r1) /* save old stack ptr in backchain */ - ld r3,0(r3) /* get to real function ptr (assume same TOC) */ - bl 2f /* we need LR to return, continue at label 2 */ - - ld r0,16(r1) /* we return here from the call, get LR and */ - ld r1,0(r1) /* .. old stack ptr */ - mtspr SPRN_SRR0,r0 /* and get back to virtual mode with these */ - mfmsr r4 - ori r4,r4,MSR_IR|MSR_DR - mtspr SPRN_SRR1,r4 - rfid - -2: mtspr SPRN_SRR0,r3 /* coming from above, enter real mode */ - mr r3,r4 /* get parameter */ - mfmsr r0 - ori r0,r0,MSR_IR|MSR_DR - xori r0,r0,MSR_IR|MSR_DR - mtspr SPRN_SRR1,r0 - rfid - - .section ".toc","aw" PPC64_CACHES: .tc ppc64_caches[TC],ppc64_caches |