linux-kernel - [PATCH 6/9] powerpc/8xx: use modify_instruction

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Message-Id: <08dc5872b4d890391035c3aa82c89dfca21555e1.1541784640.git.christophe.leroy@c-s.fr>
Date:   Fri,  9 Nov 2018 17:33:26 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 6/9] powerpc/8xx: use modify_instruction_site()

Instead of hardcoding the TLB handlers patching, use
the newly created modify_instruction_site() helper.

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
 arch/powerpc/mm/8xx_mmu.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c
index 01b7f5107c3a..a9b287f2f009 100644
--- a/arch/powerpc/mm/8xx_mmu.c
+++ b/arch/powerpc/mm/8xx_mmu.c
@@ -100,11 +100,7 @@ static void __init mmu_mapin_immr(void)
 
 static void __init mmu_patch_cmp_limit(s32 *site, unsigned long mapped)
 {
-	unsigned int instr = *(unsigned int *)patch_site_addr(site);
-
-	instr &= 0xffff0000;
-	instr |= (unsigned long)__va(mapped) >> 16;
-	patch_instruction_site(site, instr);
+	modify_instruction_site(site, 0xffff, (unsigned long)__va(mapped) >> 16);
 }
 
 unsigned long __init mmu_mapin_ram(unsigned long top)
-- 
2.13.3