From: Russell King - ARM Linux <linux@arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH 01/25] ARM: pm: ensure ARMv7 CPUs save and restore the TLS register Date: Thu, 23 Jun 2011 20:09:22 +0100 [thread overview] Message-ID: <E1QZpHG-0005lf-Fh@rmk-PC.arm.linux.org.uk> (raw) In-Reply-To: <20110623190900.GH9449@n2100.arm.linux.org.uk> Ensure that the TLS register is saved and restored over a suspend cycle, so that userspace programs don't see a corrupted TLS value. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> --- arch/arm/mm/proc-v7.S | 10 +++++++--- 1 files changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index b3b566e..426c946 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -208,19 +208,21 @@ cpu_v7_name: /* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */ .globl cpu_v7_suspend_size -.equ cpu_v7_suspend_size, 4 * 8 +.equ cpu_v7_suspend_size, 4 * 9 #ifdef CONFIG_PM_SLEEP ENTRY(cpu_v7_do_suspend) stmfd sp!, {r4 - r11, lr} mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID mrc p15, 0, r5, c13, c0, 1 @ Context ID + mrc p15, 0, r6, c13, c0, 3 @ User r/o thread ID + stmia r0!, {r4 - r6} mrc p15, 0, r6, c3, c0, 0 @ Domain ID mrc p15, 0, r7, c2, c0, 0 @ TTB 0 mrc p15, 0, r8, c2, c0, 1 @ TTB 1 mrc p15, 0, r9, c1, c0, 0 @ Control register mrc p15, 0, r10, c1, c0, 1 @ Auxiliary control register mrc p15, 0, r11, c1, c0, 2 @ Co-processor access control - stmia r0, {r4 - r11} + stmia r0, {r6 - r11} ldmfd sp!, {r4 - r11, pc} ENDPROC(cpu_v7_do_suspend) @@ -228,9 +230,11 @@ ENTRY(cpu_v7_do_resume) mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate TLBs mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache - ldmia r0, {r4 - r11} + ldmia r0!, {r4 - r6} mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID mcr p15, 0, r5, c13, c0, 1 @ Context ID + mcr p15, 0, r6, c13, c0, 3 @ User r/o thread ID + ldmia r0, {r6 - r11} mcr p15, 0, r6, c3, c0, 0 @ Domain ID mcr p15, 0, r7, c2, c0, 0 @ TTB 0 mcr p15, 0, r8, c2, c0, 1 @ TTB 1 -- 1.7.4.4
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From: linux@arm.linux.org.uk (Russell King - ARM Linux) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 01/25] ARM: pm: ensure ARMv7 CPUs save and restore the TLS register Date: Thu, 23 Jun 2011 20:09:22 +0100 [thread overview] Message-ID: <E1QZpHG-0005lf-Fh@rmk-PC.arm.linux.org.uk> (raw) In-Reply-To: <20110623190900.GH9449@n2100.arm.linux.org.uk> Ensure that the TLS register is saved and restored over a suspend cycle, so that userspace programs don't see a corrupted TLS value. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> --- arch/arm/mm/proc-v7.S | 10 +++++++--- 1 files changed, 7 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index b3b566e..426c946 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -208,19 +208,21 @@ cpu_v7_name: /* Suspend/resume support: derived from arch/arm/mach-s5pv210/sleep.S */ .globl cpu_v7_suspend_size -.equ cpu_v7_suspend_size, 4 * 8 +.equ cpu_v7_suspend_size, 4 * 9 #ifdef CONFIG_PM_SLEEP ENTRY(cpu_v7_do_suspend) stmfd sp!, {r4 - r11, lr} mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID mrc p15, 0, r5, c13, c0, 1 @ Context ID + mrc p15, 0, r6, c13, c0, 3 @ User r/o thread ID + stmia r0!, {r4 - r6} mrc p15, 0, r6, c3, c0, 0 @ Domain ID mrc p15, 0, r7, c2, c0, 0 @ TTB 0 mrc p15, 0, r8, c2, c0, 1 @ TTB 1 mrc p15, 0, r9, c1, c0, 0 @ Control register mrc p15, 0, r10, c1, c0, 1 @ Auxiliary control register mrc p15, 0, r11, c1, c0, 2 @ Co-processor access control - stmia r0, {r4 - r11} + stmia r0, {r6 - r11} ldmfd sp!, {r4 - r11, pc} ENDPROC(cpu_v7_do_suspend) @@ -228,9 +230,11 @@ ENTRY(cpu_v7_do_resume) mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate TLBs mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache - ldmia r0, {r4 - r11} + ldmia r0!, {r4 - r6} mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID mcr p15, 0, r5, c13, c0, 1 @ Context ID + mcr p15, 0, r6, c13, c0, 3 @ User r/o thread ID + ldmia r0, {r6 - r11} mcr p15, 0, r6, c3, c0, 0 @ Domain ID mcr p15, 0, r7, c2, c0, 0 @ TTB 0 mcr p15, 0, r8, c2, c0, 1 @ TTB 1 -- 1.7.4.4
next prev parent reply other threads:[~2011-06-23 19:09 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-06-23 19:09 [PATCH 00/25] Re-jig cpu_suspend for a saner calling convention Russell King - ARM Linux 2011-06-23 19:09 ` Russell King - ARM Linux 2011-06-23 19:09 ` Russell King - ARM Linux [this message] 2011-06-23 19:09 ` [PATCH 01/25] ARM: pm: ensure ARMv7 CPUs save and restore the TLS register Russell King - ARM Linux 2011-06-23 19:09 ` [PATCH 02/25] ARM: pm: arrange for cpu_proc_init() to be called on resume Russell King - ARM Linux 2011-06-23 19:09 ` Russell King - ARM Linux 2011-06-23 19:10 ` [PATCH 03/25] ARM: pm: sa1100: no need to re-enable clock switching Russell King - ARM Linux 2011-06-23 19:10 ` Russell King - ARM Linux 2011-06-23 19:10 ` [PATCH 04/25] ARM: pm: make MULTI_CPU and !MULTI_CPU resume paths the same Russell King - ARM Linux 2011-06-23 19:10 ` Russell King - ARM Linux 2011-06-23 19:10 ` [PATCH 05/25] ARM: pm: move return address (for cpu_resume) to top of stack Russell King - ARM Linux 2011-06-23 19:10 ` Russell King - ARM Linux 2011-06-23 19:11 ` [PATCH 06/25] ARM: pm: extract common code from MULTI_CPU/!MULTI_CPU paths Russell King - ARM Linux 2011-06-23 19:11 ` Russell King - ARM Linux 2011-06-23 19:11 ` [PATCH 07/25] ARM: pm: preserve r4 - r11 across a suspend Russell King - ARM Linux 2011-06-23 19:11 ` Russell King - ARM Linux 2011-06-23 19:11 ` [PATCH 08/25] ARM: pm: reallocate registers to avoid r2, r3 Russell King - ARM Linux 2011-06-23 19:11 ` Russell King - ARM Linux 2011-06-23 19:12 ` [PATCH 09/25] ARM: pm: rejig suspend follow-on function calling convention Russell King - ARM Linux 2011-06-23 19:12 ` Russell King - ARM Linux 2011-06-23 19:12 ` [PATCH 10/25] ARM: pm: move sa1100 to use proper suspend func arg0 Russell King - ARM Linux 2011-06-23 19:12 ` Russell King - ARM Linux 2011-06-23 19:12 ` [PATCH 11/25] ARM: pm: convert cpu_suspend() to a normal function Russell King - ARM Linux 2011-06-23 19:12 ` Russell King - ARM Linux 2011-06-23 19:13 ` [PATCH 12/25] ARM: pm: move cpu_init() call into core code Russell King - ARM Linux 2011-06-23 19:13 ` Russell King - ARM Linux 2011-06-23 19:13 ` [PATCH 13/25] ARM: pm: sa1100: move cpu_suspend into C code Russell King - ARM Linux 2011-06-23 19:13 ` Russell King - ARM Linux 2011-06-23 19:13 ` [PATCH 14/25] ARM: pm: plat-s3c24xx: cleanup s3c_cpu_save Russell King - ARM Linux 2011-06-23 19:13 ` Russell King - ARM Linux 2011-06-24 6:48 ` Kukjin Kim 2011-06-24 6:48 ` Kukjin Kim 2011-06-23 19:14 ` [PATCH 15/25] ARM: pm: mach-s5pv210: " Russell King - ARM Linux 2011-06-23 19:14 ` Russell King - ARM Linux 2011-06-23 19:14 ` [PATCH 16/25] ARM: pm: mach-exynos4: " Russell King - ARM Linux 2011-06-23 19:14 ` Russell King - ARM Linux 2011-06-23 19:14 ` [PATCH 17/25] ARM: pm: mach-s3c64xx: " Russell King - ARM Linux 2011-06-23 19:14 ` Russell King - ARM Linux 2011-06-23 19:15 ` [PATCH 18/25] ARM: pm: samsung: move cpu_suspend into C code Russell King - ARM Linux 2011-06-23 19:15 ` Russell King - ARM Linux 2011-06-23 19:15 ` [PATCH 19/25] ARM: pm: samsung: no need to call flush_cache_all() Russell King - ARM Linux 2011-06-23 19:15 ` Russell King - ARM Linux 2011-06-23 19:15 ` [PATCH 20/25] ARM: pm: pxa: move cpu_suspend into C code Russell King - ARM Linux 2011-06-23 19:15 ` Russell King - ARM Linux 2011-06-23 19:16 ` [PATCH 21/25] ARM: pm: omap34xx: no need to save all registers in sleep34xx.S Russell King - ARM Linux 2011-06-23 19:16 ` Russell King - ARM Linux 2011-06-23 19:16 ` [PATCH 22/25] ARM: pm: omap34xx: remove misleading comment and use of r9 Russell King - ARM Linux 2011-06-23 19:16 ` Russell King - ARM Linux 2011-06-23 19:16 ` [PATCH 23/25] ARM: pm: omap34xx: convert to generic suspend/resume support Russell King - ARM Linux 2011-06-23 19:16 ` Russell King - ARM Linux 2011-06-24 7:37 ` Jean Pihet 2011-06-24 7:37 ` Jean Pihet 2011-06-24 7:42 ` Russell King - ARM Linux 2011-06-24 7:42 ` Russell King - ARM Linux 2011-06-23 19:17 ` [PATCH 24/25] ARM: pm: hide 1st and 2nd arguments to cpu_suspend from platform code Russell King - ARM Linux 2011-06-23 19:17 ` Russell King - ARM Linux 2011-06-23 21:27 ` Kevin Hilman 2011-06-23 21:27 ` Kevin Hilman 2011-06-23 19:17 ` [PATCH 25/25] ARM: pm: ensure our temporary page table entry is removed from the TLB Russell King - ARM Linux 2011-06-23 19:17 ` Russell King - ARM Linux 2011-06-23 22:14 ` [PATCH 00/25] Re-jig cpu_suspend for a saner calling convention Kevin Hilman 2011-06-23 22:14 ` Kevin Hilman 2011-06-24 7:43 ` Jean Pihet 2011-06-24 7:43 ` Jean Pihet
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