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| author | Mark Rutland <mark.rutland@arm.com> | 2017-08-14 23:09:01 +0000 |
|---|---|---|
| committer | android-build-merger <android-build-merger@google.com> | 2017-08-14 23:09:01 +0000 |
| commit | 9efca214f94bdb59b42791ebbd6319cccb8d1bb8 (patch) | |
| tree | fbfcddbc513e7ba468cf5b64995db71650a960bb | |
| parent | c1a162afba252161b5233df49c1475688811f862 (diff) | |
| parent | a0b2e0272c5304fe6564db9eb26a0b398418f4f4 (diff) | |
| download | v4.4-9efca214f94bdb59b42791ebbd6319cccb8d1bb8.tar.gz | |
BACKPORT: arm64: move sp_el0 and tpidr_el1 into cpu_suspend_ctx am: 48dd80cb13
am: a0b2e0272c
Change-Id: I17cc891f68b9938370912e69de0b8dd90aa83cb7
| -rw-r--r-- | arch/arm64/include/asm/suspend.h | 2 | ||||
| -rw-r--r-- | arch/arm64/kernel/sleep.S | 3 | ||||
| -rw-r--r-- | arch/arm64/kernel/suspend.c | 6 | ||||
| -rw-r--r-- | arch/arm64/mm/proc.S | 10 |
4 files changed, 9 insertions, 12 deletions
diff --git a/arch/arm64/include/asm/suspend.h b/arch/arm64/include/asm/suspend.h index 59a5b0f1e81c..4d19a03d316e 100644 --- a/arch/arm64/include/asm/suspend.h +++ b/arch/arm64/include/asm/suspend.h @@ -1,7 +1,7 @@ #ifndef __ASM_SUSPEND_H #define __ASM_SUSPEND_H -#define NR_CTX_REGS 11 +#define NR_CTX_REGS 13 /* * struct cpu_suspend_ctx must be 16-byte aligned since it is allocated on diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S index e33fe33876ab..f586f7c875e2 100644 --- a/arch/arm64/kernel/sleep.S +++ b/arch/arm64/kernel/sleep.S @@ -173,9 +173,6 @@ ENTRY(cpu_resume) /* load physical address of identity map page table in x1 */ adrp x1, idmap_pg_dir mov sp, x2 - /* save thread_info */ - and x2, x2, #~(THREAD_SIZE - 1) - msr sp_el0, x2 /* * cpu_do_resume expects x0 to contain context physical address * pointer and x1 to contain physical address of 1:1 page tables diff --git a/arch/arm64/kernel/suspend.c b/arch/arm64/kernel/suspend.c index f42b8b8f1d0a..e7a96462ca2d 100644 --- a/arch/arm64/kernel/suspend.c +++ b/arch/arm64/kernel/suspend.c @@ -96,12 +96,6 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) cpu_uninstall_idmap(); /* - * Restore per-cpu offset before any kernel - * subsystem relying on it has a chance to run. - */ - set_my_cpu_offset(per_cpu_offset(smp_processor_id())); - - /* * PSTATE was not saved over suspend/resume, re-enable any * detected features that might not have been set correctly. */ diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 85a542b21575..3b3a4710dcd6 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -71,12 +71,15 @@ ENTRY(cpu_do_suspend) mrs x10, mdscr_el1 mrs x11, oslsr_el1 mrs x12, sctlr_el1 + mrs x13, tpidr_el1 + mrs x14, sp_el0 stp x2, x3, [x0] stp x4, x5, [x0, #16] stp x6, x7, [x0, #32] stp x8, x9, [x0, #48] stp x10, x11, [x0, #64] - str x12, [x0, #80] + stp x12, x13, [x0, #80] + str x14, [x0, #96] ret ENDPROC(cpu_do_suspend) @@ -99,7 +102,8 @@ ENTRY(cpu_do_resume) ldp x6, x7, [x0, #32] ldp x8, x9, [x0, #48] ldp x10, x11, [x0, #64] - ldr x12, [x0, #80] + ldp x12, x13, [x0, #80] + ldr x14, [x0, #96] msr tpidr_el0, x2 msr tpidrro_el0, x3 msr contextidr_el1, x4 @@ -111,6 +115,8 @@ ENTRY(cpu_do_resume) msr tcr_el1, x8 msr vbar_el1, x9 msr mdscr_el1, x10 + msr tpidr_el1, x13 + msr sp_el0, x14 /* * Restore oslsr_el1 by writing oslar_el1 */ |