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-rw-r--r--arch/powerpc/include/asm/paca.h12
-rw-r--r--arch/powerpc/kernel/asm-offsets.c32
-rw-r--r--arch/powerpc/kernel/paca.c14
3 files changed, 39 insertions, 19 deletions
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index 082b3aedf145..0ea1985bdb8b 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -43,6 +43,7 @@ struct task_struct;
* processor.
*/
struct paca_struct {
+#ifdef CONFIG_PPC_BOOK3S
/*
* Because hw_cpu_id, unlike other paca fields, is accessed
* routinely from other CPUs (from the IRQ code), we stick to
@@ -51,7 +52,7 @@ struct paca_struct {
*/
struct lppaca *lppaca_ptr; /* Pointer to LpPaca for PLIC */
-
+#endif /* CONFIG_PPC_BOOK3S */
/*
* MAGIC: the spinlock functions in arch/powerpc/lib/locks.c
* load lock_token and paca_index with a single lwz
@@ -64,13 +65,16 @@ struct paca_struct {
u64 kernel_toc; /* Kernel TOC address */
u64 kernelbase; /* Base address of kernel */
u64 kernel_msr; /* MSR while running in kernel */
+#ifdef CONFIG_PPC_STD_MMU_64
u64 stab_real; /* Absolute address of segment table */
u64 stab_addr; /* Virtual address of segment table */
+#endif /* CONFIG_PPC_STD_MMU_64 */
void *emergency_sp; /* pointer to emergency stack */
u64 data_offset; /* per cpu data offset */
s16 hw_cpu_id; /* Physical processor number */
u8 cpu_start; /* At startup, processor spins until */
/* this becomes non-zero. */
+#ifdef CONFIG_PPC_STD_MMU_64
struct slb_shadow *slb_shadow_ptr;
/*
@@ -81,11 +85,13 @@ struct paca_struct {
u64 exmc[10]; /* used for machine checks */
u64 exslb[10]; /* used for SLB/segment table misses
* on the linear mapping */
-
- mm_context_t context;
+ /* SLB related definitions */
u16 vmalloc_sllp;
u16 slb_cache_ptr;
u16 slb_cache[SLB_CACHE_ENTRIES];
+#endif /* CONFIG_PPC_STD_MMU_64 */
+
+ mm_context_t context;
/*
* then miscellaneous read-write fields
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 1e40bc053946..ce90c570cd8e 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -122,8 +122,6 @@ int main(void)
DEFINE(PACAKSAVE, offsetof(struct paca_struct, kstack));
DEFINE(PACACURRENT, offsetof(struct paca_struct, __current));
DEFINE(PACASAVEDMSR, offsetof(struct paca_struct, saved_msr));
- DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
- DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
DEFINE(PACASTABRR, offsetof(struct paca_struct, stab_rr));
DEFINE(PACAR1, offsetof(struct paca_struct, saved_r1));
DEFINE(PACATOC, offsetof(struct paca_struct, kernel_toc));
@@ -131,35 +129,30 @@ int main(void)
DEFINE(PACAKMSR, offsetof(struct paca_struct, kernel_msr));
DEFINE(PACASOFTIRQEN, offsetof(struct paca_struct, soft_enabled));
DEFINE(PACAHARDIRQEN, offsetof(struct paca_struct, hard_enabled));
- DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
- DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
- DEFINE(PACAVMALLOCSLLP, offsetof(struct paca_struct, vmalloc_sllp));
#ifdef CONFIG_PPC_MM_SLICES
DEFINE(PACALOWSLICESPSIZE, offsetof(struct paca_struct,
context.low_slices_psize));
DEFINE(PACAHIGHSLICEPSIZE, offsetof(struct paca_struct,
context.high_slices_psize));
DEFINE(MMUPSIZEDEFSIZE, sizeof(struct mmu_psize_def));
+#endif /* CONFIG_PPC_MM_SLICES */
+#ifdef CONFIG_PPC_STD_MMU_64
+ DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
+ DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
+ DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
+ DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
+ DEFINE(PACAVMALLOCSLLP, offsetof(struct paca_struct, vmalloc_sllp));
+#ifdef CONFIG_PPC_MM_SLICES
DEFINE(MMUPSIZESLLP, offsetof(struct mmu_psize_def, sllp));
#else
DEFINE(PACACONTEXTSLLP, offsetof(struct paca_struct, context.sllp));
-
#endif /* CONFIG_PPC_MM_SLICES */
DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
- DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
DEFINE(PACALPPACAPTR, offsetof(struct paca_struct, lppaca_ptr));
- DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
- DEFINE(PACA_STARTPURR, offsetof(struct paca_struct, startpurr));
- DEFINE(PACA_STARTSPURR, offsetof(struct paca_struct, startspurr));
- DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
- DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
DEFINE(PACA_SLBSHADOWPTR, offsetof(struct paca_struct, slb_shadow_ptr));
- DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
- DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
-
DEFINE(SLBSHADOW_STACKVSID,
offsetof(struct slb_shadow, save_area[SLB_NUM_BOLTED - 1].vsid));
DEFINE(SLBSHADOW_STACKESID,
@@ -169,6 +162,15 @@ int main(void)
DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
DEFINE(SLBSHADOW_SAVEAREA, offsetof(struct slb_shadow, save_area));
+#endif /* CONFIG_PPC_STD_MMU_64 */
+ DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
+ DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
+ DEFINE(PACA_STARTPURR, offsetof(struct paca_struct, startpurr));
+ DEFINE(PACA_STARTSPURR, offsetof(struct paca_struct, startspurr));
+ DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
+ DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
+ DEFINE(PACA_DATA_OFFSET, offsetof(struct paca_struct, data_offset));
+ DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
#endif /* CONFIG_PPC64 */
/* RTAS */
diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c
index c744b327bcab..e9962c7f8a09 100644
--- a/arch/powerpc/kernel/paca.c
+++ b/arch/powerpc/kernel/paca.c
@@ -18,6 +18,8 @@
* field correctly */
extern unsigned long __toc_start;
+#ifdef CONFIG_PPC_BOOK3S
+
/*
* The structure which the hypervisor knows about - this structure
* should not cross a page boundary. The vpa_init/register_vpa call
@@ -41,6 +43,10 @@ struct lppaca lppaca[] = {
},
};
+#endif /* CONFIG_PPC_BOOK3S */
+
+#ifdef CONFIG_PPC_STD_MMU_64
+
/*
* 3 persistent SLBs are registered here. The buffer will be zero
* initially, hence will all be invaild until we actually write them.
@@ -52,6 +58,8 @@ struct slb_shadow slb_shadow[] __cacheline_aligned = {
},
};
+#endif /* CONFIG_PPC_STD_MMU_64 */
+
/* The Paca is an array with one entry per processor. Each contains an
* lppaca, which contains the information shared between the
* hypervisor and Linux.
@@ -77,15 +85,19 @@ void __init initialise_pacas(void)
for (cpu = 0; cpu < NR_CPUS; cpu++) {
struct paca_struct *new_paca = &paca[cpu];
+#ifdef CONFIG_PPC_BOOK3S
new_paca->lppaca_ptr = &lppaca[cpu];
+#endif
new_paca->lock_token = 0x8000;
new_paca->paca_index = cpu;
new_paca->kernel_toc = kernel_toc;
new_paca->kernelbase = (unsigned long) _stext;
new_paca->kernel_msr = MSR_KERNEL;
new_paca->hw_cpu_id = 0xffff;
- new_paca->slb_shadow_ptr = &slb_shadow[cpu];
new_paca->__current = &init_task;
+#ifdef CONFIG_PPC_STD_MMU_64
+ new_paca->slb_shadow_ptr = &slb_shadow[cpu];
+#endif /* CONFIG_PPC_STD_MMU_64 */
}
}
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-28 02:06:11 +0000