From 576e02bbf1062b9118d5bbb96a40ed3b6b359f22 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 24 Nov 2020 15:24:56 +0000 Subject: powerpc/8xx: Simplify INVALIDATE_ADJACENT_PAGES_CPU15 We now have r11 available as a scratch register so INVALIDATE_ADJACENT_PAGES_CPU15() can be simplified. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/bdafd651b4ac3a851fd09249f5f3699c50da29f2.1606231483.git.christophe.leroy@csgroup.eu --- arch/powerpc/kernel/head_8xx.S | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'arch/powerpc/kernel') diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index e5d57018e1a0..4d792a8fdc1b 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -180,14 +180,13 @@ SystemCall: */ #ifdef CONFIG_8xx_CPU15 -#define INVALIDATE_ADJACENT_PAGES_CPU15(addr) \ - addi addr, addr, PAGE_SIZE; \ - tlbie addr; \ - addi addr, addr, -(PAGE_SIZE << 1); \ - tlbie addr; \ - addi addr, addr, PAGE_SIZE +#define INVALIDATE_ADJACENT_PAGES_CPU15(addr, tmp) \ + addi tmp, addr, PAGE_SIZE; \ + tlbie tmp; \ + addi tmp, addr, -PAGE_SIZE; \ + tlbie tmp #else -#define INVALIDATE_ADJACENT_PAGES_CPU15(addr) +#define INVALIDATE_ADJACENT_PAGES_CPU15(addr, tmp) #endif InstructionTLBMiss: @@ -198,7 +197,7 @@ InstructionTLBMiss: * kernel page tables. */ mfspr r10, SPRN_SRR0 /* Get effective address of fault */ - INVALIDATE_ADJACENT_PAGES_CPU15(r10) + INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11) mtspr SPRN_MD_EPN, r10 #ifdef CONFIG_MODULES mfcr r11 -- cgit v1.2.3