diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-18 20:11:32 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-06-18 20:11:32 +0100 |
| commit | 3fbd55ec21e698221ffb43526090137b07c32586 (patch) | |
| tree | 421349dff22226b6b85188a5bf8b0bc6e167dfeb /arch/arm/include/asm/proc-fns.h | |
| parent | b3f288de7c8add67a3364e989b865b6537838662 (diff) | |
| parent | a469abd0f868c902b75532579bf87553dcf1b360 (diff) | |
Merge branch 'for-rmk/lpae' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
Conflicts:
arch/arm/kernel/smp.c
Please pull these miscellaneous LPAE fixes I've been collecting for a while
now for 3.11. They've been tested and reviewed by quite a few people, and most
of the patches are pretty trivial. -- Will Deacon.
Diffstat (limited to 'arch/arm/include/asm/proc-fns.h')
| -rw-r--r-- | arch/arm/include/asm/proc-fns.h | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index a6c99fe62b82..5324c1112f3a 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -60,7 +60,7 @@ extern struct processor { /* * Set the page table */ - void (*switch_mm)(unsigned long pgd_phys, struct mm_struct *mm); + void (*switch_mm)(phys_addr_t pgd_phys, struct mm_struct *mm); /* * Set a possibly extended PTE. Non-extended PTEs should * ignore 'ext'. @@ -82,7 +82,7 @@ extern void cpu_proc_init(void); extern void cpu_proc_fin(void); extern int cpu_do_idle(void); extern void cpu_dcache_clean_area(void *, int); -extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm); +extern void cpu_do_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); #ifdef CONFIG_ARM_LPAE extern void cpu_set_pte_ext(pte_t *ptep, pte_t pte); #else @@ -116,13 +116,25 @@ extern void cpu_resume(void); #define cpu_switch_mm(pgd,mm) cpu_do_switch_mm(virt_to_phys(pgd),mm) #ifdef CONFIG_ARM_LPAE + +#define cpu_get_ttbr(nr) \ + ({ \ + u64 ttbr; \ + __asm__("mrrc p15, " #nr ", %Q0, %R0, c2" \ + : "=r" (ttbr)); \ + ttbr; \ + }) + +#define cpu_set_ttbr(nr, val) \ + do { \ + u64 ttbr = val; \ + __asm__("mcrr p15, " #nr ", %Q0, %R0, c2" \ + : : "r" (ttbr)); \ + } while (0) + #define cpu_get_pgd() \ ({ \ - unsigned long pg, pg2; \ - __asm__("mrrc p15, 0, %0, %1, c2" \ - : "=r" (pg), "=r" (pg2) \ - : \ - : "cc"); \ + u64 pg = cpu_get_ttbr(0); \ pg &= ~(PTRS_PER_PGD*sizeof(pgd_t)-1); \ (pgd_t *)phys_to_virt(pg); \ }) |