From eb5a33ea31190c189ca4a59de4687b0877662c06 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 2 Aug 2022 11:02:37 +0200 Subject: powerpc: Don't hide eh field of lwarx behind a macro The eh field must remain 0 for PPC32 and is only used by PPC64. Don't hide that behind a macro, just leave the responsibility to the user. At the time being, the only users of PPC_RAW_L{WDQ}ARX are setting the eh field to 0, so the special handling of __PPC_EH is useless. Just take the value given by the caller. Same for DEFINE_TESTOP(), don't do special handling in that macro, ensure the caller hands over the proper eh value. Signed-off-by: Christophe Leroy [mpe: Use 'n' constraint per Segher] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/8b9c8a1a14f9143552a85fcbf96698224a8c2469.1659430931.git.christophe.leroy@csgroup.eu --- arch/powerpc/include/asm/bitops.h | 4 ++-- arch/powerpc/include/asm/ppc-opcode.h | 11 +---------- 2 files changed, 3 insertions(+), 12 deletions(-) diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index 344fba3b16eb..7e0f0322912b 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -163,7 +163,7 @@ static inline unsigned long fn( \ "bne- 1b\n" \ postfix \ : "=&r" (old), "=&r" (t) \ - : "rK" (mask), "r" (p), "i" (IS_ENABLED(CONFIG_PPC64) ? eh : 0) \ + : "rK" (mask), "r" (p), "n" (eh) \ : "cc", "memory"); \ return (old & mask); \ } @@ -171,7 +171,7 @@ static inline unsigned long fn( \ DEFINE_TESTOP(test_and_set_bits, or, PPC_ATOMIC_ENTRY_BARRIER, PPC_ATOMIC_EXIT_BARRIER, 0) DEFINE_TESTOP(test_and_set_bits_lock, or, "", - PPC_ACQUIRE_BARRIER, 1) + PPC_ACQUIRE_BARRIER, IS_ENABLED(CONFIG_PPC64)) DEFINE_TESTOP(test_and_change_bits, xor, PPC_ATOMIC_ENTRY_BARRIER, PPC_ATOMIC_EXIT_BARRIER, 0) diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 7b81b37a191e..d9703c5fd713 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -343,6 +343,7 @@ #define __PPC_SPR(r) ((((r) & 0x1f) << 16) | ((((r) >> 5) & 0x1f) << 11)) #define __PPC_RC21 (0x1 << 10) #define __PPC_PRFX_R(r) (((r) & 0x1) << 20) +#define __PPC_EH(eh) (((eh) & 0x1) << 0) /* * Both low and high 16 bits are added as SIGNED additions, so if low 16 bits @@ -359,16 +360,6 @@ #define PPC_LI_MASK 0x03fffffc #define PPC_LI(v) ((v) & PPC_LI_MASK) -/* - * Only use the larx hint bit on 64bit CPUs. e500v1/v2 based CPUs will treat a - * larx with EH set as an illegal instruction. - */ -#ifdef CONFIG_PPC64 -#define __PPC_EH(eh) (((eh) & 0x1) << 0) -#else -#define __PPC_EH(eh) 0 -#endif - /* Base instruction encoding */ #define PPC_RAW_CP_ABORT (0x7c00068c) #define PPC_RAW_COPY(a, b) (PPC_INST_COPY | ___PPC_RA(a) | ___PPC_RB(b)) -- cgit v1.2.3