@@ -401,6 +401,14 @@ static inline void mmu_early_init_devtree(void) { }
static inline void pkey_early_init_devtree(void) {}
extern void *abatron_pteptrs[2];
+
+/* Context switch the PTE pointer for the Abatron BDI2000. */
+static inline void switch_abatron_pteptrs(pgd_t *pgd)
+{
+ if (IS_ENABLED(CONFIG_BDI_SWITCH))
+ abatron_pteptrs[1] = pgd;
+}
+
#endif /* __ASSEMBLY__ */
#endif
@@ -703,14 +703,6 @@ _GLOBAL(abort)
mtspr SPRN_DBCR0,r13
_GLOBAL(set_context)
-
-#ifdef CONFIG_BDI_SWITCH
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is the second parameter.
- */
- lis r5, abatron_pteptrs@ha
- stw r4, abatron_pteptrs@l + 0x4(r5)
-#endif
sync
mtspr SPRN_PID,r3
isync /* Need an isync to flush shadow */
@@ -731,9 +723,3 @@ EXPORT_SYMBOL(empty_zero_page)
.globl swapper_pg_dir
swapper_pg_dir:
.space PGD_TABLE_SIZE
-
-/* Room for two PTE pointers, usually the kernel and current user pointers
- * to their respective root page table.
- */
-abatron_pteptrs:
- .space 8
@@ -781,15 +781,6 @@ _GLOBAL(__fixup_440A_mcheck)
blr
_GLOBAL(set_context)
-
-#ifdef CONFIG_BDI_SWITCH
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is the second parameter.
- */
- lis r5, abatron_pteptrs@h
- ori r5, r5, abatron_pteptrs@l
- stw r4, 0x4(r5)
-#endif
mtspr SPRN_PID,r3
isync /* Force context change */
blr
@@ -1259,13 +1250,6 @@ EXPORT_SYMBOL(empty_zero_page)
swapper_pg_dir:
.space PGD_TABLE_SIZE
-/*
- * Room for two PTE pointers, usually the kernel and current user pointers
- * to their respective root page table.
- */
-abatron_pteptrs:
- .space 8
-
#ifdef CONFIG_SMP
.align 12
temp_boot_stack:
@@ -804,10 +804,3 @@ EXPORT_SYMBOL(empty_zero_page)
.globl swapper_pg_dir
swapper_pg_dir:
.space PGD_TABLE_SIZE
-
-/* Room for two PTE table pointers, usually the kernel and current user
- * pointer to their respective root page table (pgdir).
- */
- .globl abatron_pteptrs
-abatron_pteptrs:
- .space 8
@@ -1282,9 +1282,3 @@ EXPORT_SYMBOL(empty_zero_page)
.globl swapper_pg_dir
swapper_pg_dir:
.space PGD_TABLE_SIZE
-
-/* Room for two PTE pointers, usually the kernel and current user pointers
- * to their respective root page table.
- */
-abatron_pteptrs:
- .space 8
@@ -986,15 +986,6 @@ _GLOBAL(abort)
isync
_GLOBAL(set_context)
-
-#ifdef CONFIG_BDI_SWITCH
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is the second parameter.
- */
- lis r5, abatron_pteptrs@h
- ori r5, r5, abatron_pteptrs@l
- stw r4, 0x4(r5)
-#endif
mtspr SPRN_PID,r3
isync /* Force context change */
blr
@@ -1242,10 +1233,3 @@ EXPORT_SYMBOL(empty_zero_page)
.globl swapper_pg_dir
swapper_pg_dir:
.space PGD_TABLE_SIZE
-
-/*
- * Room for two PTE pointers, usually the kernel and current user pointers
- * to their respective root page table.
- */
-abatron_pteptrs:
- .space 8
@@ -224,12 +224,6 @@ void set_context(unsigned long id, pgd_t *pgd)
{
s16 offset = (s16)(__pa(swapper_pg_dir));
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is passed as second argument.
- */
- if (IS_ENABLED(CONFIG_BDI_SWITCH))
- abatron_pteptrs[1] = pgd;
-
/* Register M_TWB will contain base address of level 1 table minus the
* lower part of the kernel PGDIR base address, so that all accesses to
* level 1 table are done relative to lower part of kernel PGDIR base
@@ -357,6 +357,7 @@ void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
/* Flick the MMU and release lock */
pr_hardcont(" -> %d\n", id);
+ switch_abatron_pteptrs(next->pgd);
set_context(id, next->pgd);
raw_spin_unlock(&context_lock);
}
@@ -362,14 +362,6 @@ _GLOBAL(_tlbivax_bcast)
blr
_GLOBAL(set_context)
-#ifdef CONFIG_BDI_SWITCH
- /* Context switch the PTE pointer for the Abatron BDI2000.
- * The PGDIR is the second parameter.
- */
- lis r5, abatron_pteptrs@h
- ori r5, r5, abatron_pteptrs@l
- stw r4, 0x4(r5)
-#endif
mtspr SPRN_PID,r3
isync /* Force context change */
blr
@@ -36,6 +36,12 @@ extern char etext[], _stext[], _sinittext[], _einittext[];
static u8 early_fixmap_pagetable[FIXMAP_PTE_SIZE] __page_aligned_data;
+/*
+ * Room for two PTE table pointers, usually the kernel and current user
+ * pointer to their respective root page table (pgdir).
+ */
+void *abatron_pteptrs[2];
+
notrace void __init early_ioremap_init(void)
{
unsigned long addr = ALIGN_DOWN(FIXADDR_START, PGDIR_SIZE);
Instead of duplicating the update of BDI2000 pointers in set_context(), do it directly from switch_mmu_context(). Define a helper in mmu.h that can be re-used later by book3s/32. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/include/asm/mmu.h | 8 ++++++++ arch/powerpc/kernel/head_40x.S | 14 -------------- arch/powerpc/kernel/head_44x.S | 16 ---------------- arch/powerpc/kernel/head_8xx.S | 7 ------- arch/powerpc/kernel/head_book3s_32.S | 6 ------ arch/powerpc/kernel/head_fsl_booke.S | 16 ---------------- arch/powerpc/mm/nohash/8xx.c | 6 ------ arch/powerpc/mm/nohash/mmu_context.c | 1 + arch/powerpc/mm/nohash/tlb_low.S | 8 -------- arch/powerpc/mm/pgtable_32.c | 6 ++++++ 10 files changed, 15 insertions(+), 73 deletions(-)