diff options
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/mmu-hash.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 22 | ||||
| -rw-r--r-- | arch/powerpc/mm/hash_low_32.S | 6 |
3 files changed, 16 insertions, 14 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/mmu-hash.h b/arch/powerpc/include/asm/book3s/32/mmu-hash.h index 8c5727a322b1..f9eae105a9f4 100644 --- a/arch/powerpc/include/asm/book3s/32/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/32/mmu-hash.h @@ -65,6 +65,8 @@ typedef pte_t *pgtable_t; /* Values for Segment Registers */ #define SR_NX 0x10000000 /* No Execute */ +#define SR_KP 0x20000000 /* User key */ +#define SR_KS 0x40000000 /* Supervisor key */ #ifndef __ASSEMBLY__ diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 19b46cb9f623..69b97cc7079f 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -522,9 +522,9 @@ InstructionTLBMiss: andc. r1,r1,r0 /* check access & ~permission */ bne- InstructionAddressInvalid /* return if access not permitted */ /* Convert linux-style PTE to low word of PPC-style PTE */ - rlwimi r0,r0,32-1,30,30 /* _PAGE_USER -> PP msb */ - ori r1, r1, 0xe05 /* clear out reserved bits */ - andc r1, r0, r1 /* PP = user? 2 : 0 */ + rlwimi r0,r0,32-2,31,31 /* _PAGE_USER -> PP lsb */ + ori r1, r1, 0xe06 /* clear out reserved bits */ + andc r1, r0, r1 /* PP = user? 1 : 0 */ BEGIN_FTR_SECTION rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) @@ -590,11 +590,11 @@ DataLoadTLBMiss: * we would need to update the pte atomically with lwarx/stwcx. */ /* Convert linux-style PTE to low word of PPC-style PTE */ - rlwinm r1,r0,32-10,31,31 /* _PAGE_RW -> PP lsb */ + rlwinm r1,r0,32-9,30,30 /* _PAGE_RW -> PP msb */ rlwimi r0,r0,32-1,30,30 /* _PAGE_USER -> PP msb */ rlwimi r0,r0,32-1,31,31 /* _PAGE_USER -> PP lsb */ ori r1,r1,0xe04 /* clear out reserved bits */ - andc r1,r0,r1 /* PP = user? rw? 2: 3: 0 */ + andc r1,r0,r1 /* PP = user? rw? 1: 3: 0 */ BEGIN_FTR_SECTION rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) @@ -670,9 +670,9 @@ DataStoreTLBMiss: * we would need to update the pte atomically with lwarx/stwcx. */ /* Convert linux-style PTE to low word of PPC-style PTE */ - rlwimi r0,r0,32-1,30,30 /* _PAGE_USER -> PP msb */ - li r1,0xe05 /* clear out reserved bits & PP lsb */ - andc r1,r0,r1 /* PP = user? 2: 0 */ + rlwimi r0,r0,32-2,31,31 /* _PAGE_USER -> PP lsb */ + li r1,0xe06 /* clear out reserved bits & PP msb */ + andc r1,r0,r1 /* PP = user? 1: 0 */ BEGIN_FTR_SECTION rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) @@ -896,9 +896,9 @@ load_up_mmu: tophys(r6,r6) lwz r6,_SDR1@l(r6) mtspr SPRN_SDR1,r6 - li r0, NUM_USER_SEGMENTS /* load up segment register values */ + li r0, NUM_USER_SEGMENTS /* load up user segment register values */ mtctr r0 /* for context 0 */ - lis r3,0x2000 /* Ku = 1, VSID = 0 */ + li r3, 0 /* Kp = 0, Ks = 0, VSID = 0 */ #ifdef CONFIG_PPC_KUEP oris r3, r3, SR_NX@h /* Set Nx */ #endif @@ -910,6 +910,7 @@ load_up_mmu: li r0, 16 - NUM_USER_SEGMENTS /* load up kernel segment registers */ mtctr r0 /* for context 0 */ rlwinm r3, r3, 0, ~SR_NX /* Nx = 0 */ + oris r3, r3, SR_KP@h /* Kp = 1 */ 3: mtsrin r3, r4 addi r3, r3, 0x111 /* increment VSID */ addis r4, r4, 0x1000 /* address of next segment */ @@ -1016,7 +1017,6 @@ _ENTRY(switch_mmu_context) blt- 4f mulli r3,r3,897 /* multiply context by skew factor */ rlwinm r3,r3,4,8,27 /* VSID = (context & 0xfffff) << 4 */ - addis r3,r3,0x6000 /* Set Ks, Ku bits */ #ifdef CONFIG_PPC_KUEP oris r3, r3, SR_NX@h /* Set Nx */ #endif diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S index a6c491f18a04..e27792d0b744 100644 --- a/arch/powerpc/mm/hash_low_32.S +++ b/arch/powerpc/mm/hash_low_32.S @@ -309,13 +309,13 @@ Hash_msk = (((1 << Hash_bits) - 1) * 64) _GLOBAL(create_hpte) /* Convert linux-style PTE (r5) to low word of PPC-style PTE (r8) */ - rlwinm r8,r5,32-10,31,31 /* _PAGE_RW -> PP lsb */ - rlwinm r0,r5,32-7,31,31 /* _PAGE_DIRTY -> PP lsb */ + rlwinm r8,r5,32-9,30,30 /* _PAGE_RW -> PP msb */ + rlwinm r0,r5,32-6,30,30 /* _PAGE_DIRTY -> PP msb */ and r8,r8,r0 /* writable if _RW & _DIRTY */ rlwimi r5,r5,32-1,30,30 /* _PAGE_USER -> PP msb */ rlwimi r5,r5,32-2,31,31 /* _PAGE_USER -> PP lsb */ ori r8,r8,0xe04 /* clear out reserved bits */ - andc r8,r5,r8 /* PP = user? (rw&dirty? 2: 3): 0 */ + andc r8,r5,r8 /* PP = user? (rw&dirty? 1: 3): 0 */ BEGIN_FTR_SECTION rlwinm r8,r8,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) |