From 323d23aeac4918c7a540b597a26fa7a67645593a Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Thu, 23 Apr 2009 08:51:22 -0500 Subject: Revert "powerpc: Add support for early tlbilx opcode" This reverts commit e9965577406a2148ade97b5e0ce7c448b4ba4ef6. Our HW guys were able to fix this so it never sees the light of day. Signed-off-by: Kumar Gala --- arch/powerpc/include/asm/mmu.h | 6 ------ arch/powerpc/include/asm/ppc-opcode.h | 11 +---------- 2 files changed, 1 insertion(+), 16 deletions(-) (limited to 'arch/powerpc/include/asm') diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 86d2366ab6a..cbf15438709 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -52,12 +52,6 @@ */ #define MMU_FTR_NEED_DTLB_SW_LRU ASM_CONST(0x00200000) -/* This indicates that the processor uses the wrong opcode for tlbilx - * instructions. During the ISA 2.06 development the opcode for tlbilx - * changed and some early implementations used to old opcode - */ -#define MMU_FTR_TLBILX_EARLY_OPCODE ASM_CONST(0x00400000) - #ifndef __ASSEMBLY__ #include diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index ef4da37f3c1..640ccbbc097 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -44,7 +44,6 @@ #define PPC_INST_STSWI 0x7c0005aa #define PPC_INST_STSWX 0x7c00052a #define PPC_INST_TLBILX 0x7c000024 -#define PPC_INST_TLBILX_EARLY 0x7c000626 #define PPC_INST_WAIT 0x7c00007c /* macros to insert fields into opcodes */ @@ -64,18 +63,10 @@ #define PPC_RFDI stringify_in_c(.long PPC_INST_RFDI) #define PPC_RFMCI stringify_in_c(.long PPC_INST_RFMCI) #define PPC_TLBILX(t, a, b) stringify_in_c(.long PPC_INST_TLBILX | \ - __PPC_T_TLB(t) | \ - __PPC_RA(a) | __PPC_RB(b)) + __PPC_T_TLB(t) | __PPC_RA(a) | __PPC_RB(b)) #define PPC_TLBILX_ALL(a, b) PPC_TLBILX(0, a, b) #define PPC_TLBILX_PID(a, b) PPC_TLBILX(1, a, b) #define PPC_TLBILX_VA(a, b) PPC_TLBILX(3, a, b) - -#define PPC_TLBILX_EARLY(t, a, b) stringify_in_c(.long PPC_INST_TLBILX_EARLY | \ - __PPC_T_TLB(t) | \ - __PPC_RA(a) | __PPC_RB(b)) -#define PPC_TLBILX_ALL_EARLY(a, b) PPC_TLBILX_EARLY(0, a, b) -#define PPC_TLBILX_PID_EARLY(a, b) PPC_TLBILX_EARLY(1, a, b) -#define PPC_TLBILX_VA_EARLY(a, b) PPC_TLBILX_EARLY(3, a, b) #define PPC_WAIT(w) stringify_in_c(.long PPC_INST_WAIT | \ __PPC_WC(w)) -- cgit v1.2.3 From 2e8aead1b57ede7979bd4e24797c77e181775d9c Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Fri, 17 Apr 2009 08:03:01 +0000 Subject: powerpc: ppc32 needs elf_read_implies_exec() On ppc64 we implemented elf_read_implies_exec() for 32-bit binaries because old toolchains had bugs where they didn't mark program segments executable that needed to be. For some reason we didn't do this on ppc32 builds. This hadn't been an issue until commit 8d30c14c ("powerpc/mm: Rework I$/D$ coherency (v3)"), which had as a side effect that we are now enforcing execute permissions to some extent on 32-bit 4xx and Book E processors. This fixes it by defining elf_read_implies_exec on 32-bit to turn on the read-implies-exec behaviour on programs that are sufficiently old that they don't have a PT_GNU_STACK program header. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras --- arch/powerpc/include/asm/elf.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/include/asm') diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h index 087c22f1d36..d6b4a12cdef 100644 --- a/arch/powerpc/include/asm/elf.h +++ b/arch/powerpc/include/asm/elf.h @@ -260,6 +260,7 @@ do { \ #else # define SET_PERSONALITY(ex) \ set_personality(PER_LINUX | (current->personality & (~PER_MASK))) +# define elf_read_implies_exec(ex, exec_stk) (exec_stk != EXSTACK_DISABLE_X) #endif /* __powerpc64__ */ extern int dcache_bsize; -- cgit v1.2.3