diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 6 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 27 | ||||
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/exceptions-64s.S | 8 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/paca.c | 13 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_rmhandlers.S | 4 |
7 files changed, 50 insertions, 16 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 7778d6f..337b6fa 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -56,8 +56,8 @@ #define LOAD_HANDLER(reg, label) \ addi reg,reg,(label)-_stext; /* virt addr of handler ... */ -#define EXCEPTION_PROLOG_1(area) \ - mfspr r13,SPRN_SPRG_PACA; /* get paca address into r13 */ \ +#define EXCEPTION_PROLOG_1(area) \ + GET_PACA(r13); \ std r9,area+EX_R9(r13); /* save r9 - r12 */ \ std r10,area+EX_R10(r13); \ std r11,area+EX_R11(r13); \ @@ -174,7 +174,7 @@ label##_pSeries: \ HMT_MEDIUM; \ DO_KVM n; \ mtspr SPRN_SPRG_SCRATCH0,r13; /* save r13 */ \ - mfspr r13,SPRN_SPRG_PACA; /* get paca address into r13 */ \ + GET_PACA(r13); \ std r9,PACA_EXGEN+EX_R9(r13); /* save r9, r10 */ \ std r10,PACA_EXGEN+EX_R10(r13); \ lbz r10,PACASOFTIRQEN(r13); \ diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 6eb1d77..13429a0 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -715,12 +715,15 @@ * SPRG usage: * * All 64-bit: - * - SPRG1 stores PACA pointer + * - SPRG1 stores PACA pointer except 64-bit server in + * HV mode in which case it is HSPRG0 * * 64-bit server: * - SPRG0 unused (reserved for HV on Power4) * - SPRG2 scratch for exception vectors * - SPRG3 unused (user visible) + * - HSPRG0 stores PACA in HV mode + * - HSPRG1 scratch for "HV" exceptions * * 64-bit embedded * - SPRG0 generic exception scratch @@ -783,6 +786,22 @@ #ifdef CONFIG_PPC_BOOK3S_64 #define SPRN_SPRG_SCRATCH0 SPRN_SPRG2 +#define SPRN_SPRG_HPACA SPRN_HSPRG0 +#define SPRN_SPRG_HSCRATCH0 SPRN_HSPRG1 + +#define GET_PACA(rX) \ + BEGIN_FTR_SECTION_NESTED(66); \ + mfspr rX,SPRN_SPRG_PACA; \ + FTR_SECTION_ELSE_NESTED(66); \ + mfspr rX,SPRN_SPRG_HPACA; \ + ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_HVMODE_206, 66) + +#define SET_PACA(rX) \ + BEGIN_FTR_SECTION_NESTED(66); \ + mtspr SPRN_SPRG_PACA,rX; \ + FTR_SECTION_ELSE_NESTED(66); \ + mtspr SPRN_SPRG_HPACA,rX; \ + ALT_FTR_SECTION_END_NESTED_IFCLR(CPU_FTR_HVMODE_206, 66) #endif #ifdef CONFIG_PPC_BOOK3E_64 @@ -792,6 +811,10 @@ #define SPRN_SPRG_TLB_EXFRAME SPRN_SPRG2 #define SPRN_SPRG_TLB_SCRATCH SPRN_SPRG6 #define SPRN_SPRG_GEN_SCRATCH SPRN_SPRG0 + +#define SET_PACA(rX) mtspr SPRN_SPRG_PACA,rX +#define GET_PACA(rX) mfspr rX,SPRN_SPRG_PACA + #endif #ifdef CONFIG_PPC_BOOK3S_32 @@ -842,6 +865,8 @@ #define SPRN_SPRG_SCRATCH1 SPRN_SPRG1 #endif + + /* * An mtfsf instruction with the L bit set. On CPUs that support this a * full 64bits of FPSCR is restored and on other CPUs the L bit is ignored. diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index d82878c..dbf5bfa 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -838,7 +838,7 @@ _GLOBAL(enter_rtas) _STATIC(rtas_return_loc) /* relocation is off at this point */ - mfspr r4,SPRN_SPRG_PACA /* Get PACA */ + GET_PACA(r4) clrldi r4,r4,2 /* convert to realmode address */ bcl 20,31,$+4 @@ -869,7 +869,7 @@ _STATIC(rtas_restore_regs) REST_8GPRS(14, r1) /* Restore the non-volatiles */ REST_10GPRS(22, r1) /* ditto */ - mfspr r13,SPRN_SPRG_PACA + GET_PACA(r13) ld r4,_CCR(r1) mtcr r4 diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index aeb739e..6784bf7 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -53,7 +53,7 @@ data_access_pSeries: DO_KVM 0x300 mtspr SPRN_SPRG_SCRATCH0,r13 BEGIN_FTR_SECTION - mfspr r13,SPRN_SPRG_PACA + GET_PACA(r13) std r9,PACA_EXSLB+EX_R9(r13) std r10,PACA_EXSLB+EX_R10(r13) mfspr r10,SPRN_DAR @@ -82,7 +82,7 @@ data_access_slb_pSeries: HMT_MEDIUM DO_KVM 0x380 mtspr SPRN_SPRG_SCRATCH0,r13 - mfspr r13,SPRN_SPRG_PACA /* get paca address into r13 */ + GET_PACA(r13) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_DAR std r9,PACA_EXSLB+EX_R9(r13) /* save r9 - r12 */ @@ -121,7 +121,7 @@ instruction_access_slb_pSeries: HMT_MEDIUM DO_KVM 0x480 mtspr SPRN_SPRG_SCRATCH0,r13 - mfspr r13,SPRN_SPRG_PACA /* get paca address into r13 */ + GET_PACA(r13) std r3,PACA_EXSLB+EX_R3(r13) mfspr r3,SPRN_SRR0 /* SRR0 is faulting address */ std r9,PACA_EXSLB+EX_R9(r13) /* save r9 - r12 */ @@ -165,7 +165,7 @@ BEGIN_FTR_SECTION beq- 1f END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) mr r9,r13 - mfspr r13,SPRN_SPRG_PACA + GET_PACA(r13) mfspr r11,SPRN_SRR0 ld r12,PACAKBASE(r13) ld r10,PACAKMSR(r13) diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 3a319f9..39a4040 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -228,7 +228,7 @@ generic_secondary_common_init: mr r3,r24 /* not found, copy phys to r3 */ b .kexec_wait /* next kernel might do better */ -2: mtspr SPRN_SPRG_PACA,r13 /* Save vaddr of paca in an SPRG */ +2: SET_PACA(r13) #ifdef CONFIG_PPC_BOOK3E addi r12,r13,PACA_EXTLB /* and TLB exc frame in another */ mtspr SPRN_SPRG_TLB_EXFRAME,r12 @@ -534,7 +534,7 @@ _GLOBAL(pmac_secondary_start) ld r4,0(r4) /* Get base vaddr of paca array */ mulli r13,r24,PACA_SIZE /* Calculate vaddr of right paca */ add r13,r13,r4 /* for this processor. */ - mtspr SPRN_SPRG_PACA,r13 /* Save vaddr of paca in an SPRG*/ + SET_PACA(r13) /* Save vaddr of paca in an SPRG*/ /* Mark interrupts soft and hard disabled (they might be enabled * in the PACA when doing hotplug) diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 10f0aad..102244e 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -156,11 +156,22 @@ void __init initialise_paca(struct paca_struct *new_paca, int cpu) /* Put the paca pointer into r13 and SPRG_PACA */ void setup_paca(struct paca_struct *new_paca) { + /* Setup r13 */ local_paca = new_paca; - mtspr(SPRN_SPRG_PACA, local_paca); + #ifdef CONFIG_PPC_BOOK3E + /* On Book3E, initialize the TLB miss exception frames */ mtspr(SPRN_SPRG_TLB_EXFRAME, local_paca->extlb); +#else + /* In HV mode, we setup both HPACA and PACA to avoid problems + * if we do a GET_PACA() before the feature fixups have been + * applied + */ + if (cpu_has_feature(CPU_FTR_HVMODE_206)) + mtspr(SPRN_SPRG_HPACA, local_paca); #endif + mtspr(SPRN_SPRG_PACA, local_paca); + } static int __initdata paca_size; diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S index 2b9c908..b0ff5ff 100644 --- a/arch/powerpc/kvm/book3s_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_rmhandlers.S @@ -35,9 +35,7 @@ #if defined(CONFIG_PPC_BOOK3S_64) -#define LOAD_SHADOW_VCPU(reg) \ - mfspr reg, SPRN_SPRG_PACA - +#define LOAD_SHADOW_VCPU(reg) GET_PACA(reg) #define SHADOW_VCPU_OFF PACA_KVM_SVCPU #define MSR_NOIRQ MSR_KERNEL & ~(MSR_IR | MSR_DR) #define FUNC(name) GLUE(.,name) |