From: Russell King - ARM Linux <linux@arm.linux.org.uk> To: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.orglinux-arm-kernel@lists.infradead.orglinux-omap@vger.kernel.org Subject: [PATCH 03/11] ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness Date: Thu, 01 Sep 2011 13:49:19 +0100 [thread overview] Message-ID: <E1Qz6hr-00078J-2k@rmk-PC.arm.linux.org.uk> (raw) In-Reply-To: <20110901124752.GE29729@n2100.arm.linux.org.uk> Add a dsb after the isb to ensure that the previous writes to the CP15 registers take effect before we enable the MMU. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> --- arch/arm/mm/proc-v7.S | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index dec72ee..a773f4e 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -255,6 +255,7 @@ ENTRY(cpu_v7_do_resume) mcr p15, 0, r4, c10, c2, 0 @ write PRRR mcr p15, 0, r5, c10, c2, 1 @ write NMRR isb + dsb mov r0, r9 @ control register mov r2, r7, lsr #14 @ get TTB0 base mov r2, r2, lsl #14 -- 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 03/11] ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness Date: Thu, 01 Sep 2011 13:49:19 +0100 [thread overview] Message-ID: <E1Qz6hr-00078J-2k@rmk-PC.arm.linux.org.uk> (raw) In-Reply-To: <20110901124752.GE29729@n2100.arm.linux.org.uk> Add a dsb after the isb to ensure that the previous writes to the CP15 registers take effect before we enable the MMU. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> --- arch/arm/mm/proc-v7.S | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index dec72ee..a773f4e 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -255,6 +255,7 @@ ENTRY(cpu_v7_do_resume) mcr p15, 0, r4, c10, c2, 0 @ write PRRR mcr p15, 0, r5, c10, c2, 1 @ write NMRR isb + dsb mov r0, r9 @ control register mov r2, r7, lsr #14 @ get TTB0 base mov r2, r2, lsl #14 -- 1.7.4.4
next prev parent reply other threads:[~2011-09-01 14:02 UTC|newest] Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-09-01 12:47 [PATCH 00/11] Add L2 cache cleaning to generic CPU suspend Russell King - ARM Linux 2011-09-01 12:47 ` Russell King - ARM Linux 2011-09-01 12:48 ` [PATCH 01/11] ARM: pm: CPU specific code should not overwrite r1 (v:p offset) Russell King - ARM Linux 2011-09-01 12:48 ` Russell King - ARM Linux 2011-09-01 12:48 ` [PATCH 02/11] ARM: pm: arm920/926: fix number of registers saved Russell King - ARM Linux 2011-09-01 12:48 ` Russell King - ARM Linux 2011-09-01 12:49 ` Russell King - ARM Linux [this message] 2011-09-01 12:49 ` [PATCH 03/11] ARM: pm: some ARMv7 requires a dsb in resume to ensure correctness Russell King - ARM Linux 2011-09-07 15:41 ` Catalin Marinas 2011-09-07 15:41 ` Catalin Marinas 2011-09-07 16:19 ` Russell King - ARM Linux 2011-09-07 16:19 ` Russell King - ARM Linux 2011-09-07 16:26 ` Catalin Marinas 2011-09-07 16:26 ` Catalin Marinas 2011-09-07 16:54 ` Catalin Marinas 2011-09-07 16:54 ` Catalin Marinas 2011-09-01 12:49 ` [PATCH 04/11] ARM: pm: avoid writing the auxillary control register for ARMv7 Russell King - ARM Linux 2011-09-01 12:49 ` Russell King - ARM Linux 2011-09-01 12:49 ` [PATCH 05/11] ARM: pm: force non-zero return value from __cpu_suspend when aborting Russell King - ARM Linux 2011-09-01 12:49 ` Russell King - ARM Linux 2011-09-01 12:50 ` [PATCH 06/11] ARM: pm: preallocate a page table for suspend/resume Russell King - ARM Linux 2011-09-01 12:50 ` Russell King - ARM Linux 2011-09-01 12:50 ` [PATCH 07/11] ARM: pm: only use preallocated page table during resume Russell King - ARM Linux 2011-09-01 12:50 ` Russell King - ARM Linux 2011-09-01 12:50 ` [PATCH 08/11] ARM: pm: no need to save/restore context ID register Russell King - ARM Linux 2011-09-01 12:50 ` Russell King - ARM Linux 2011-09-03 16:33 ` Santosh 2011-09-03 16:33 ` Santosh 2011-09-04 10:08 ` Russell King - ARM Linux 2011-09-04 10:08 ` Russell King - ARM Linux 2011-09-01 12:51 ` [PATCH 09/11] ARM: pm: get rid of cpu_resume_turn_mmu_on Russell King - ARM Linux 2011-09-01 12:51 ` Russell King - ARM Linux 2011-09-01 12:51 ` [PATCH 10/11] ARM: pm: convert some assembly to C Russell King - ARM Linux 2011-09-01 12:51 ` Russell King - ARM Linux 2011-09-07 15:48 ` Lorenzo Pieralisi 2011-09-07 15:48 ` Lorenzo Pieralisi 2011-09-19 16:32 ` Russell King - ARM Linux 2011-09-19 16:32 ` Russell King - ARM Linux 2011-09-01 12:51 ` [PATCH 11/11] ARM: pm: add L2 cache cleaning for suspend Russell King - ARM Linux 2011-09-01 12:51 ` Russell King - ARM Linux 2011-09-01 15:33 ` [PATCH 00/11] Add L2 cache cleaning to generic CPU suspend Shawn Guo 2011-09-01 15:33 ` Shawn Guo 2011-09-01 15:34 ` Russell King - ARM Linux 2011-09-01 15:34 ` Russell King - ARM Linux 2011-09-01 15:57 ` Shawn Guo 2011-09-01 15:57 ` Shawn Guo 2011-09-10 16:10 ` Shawn Guo 2011-09-10 16:10 ` Shawn Guo 2011-09-19 16:22 ` Russell King - ARM Linux 2011-09-19 16:22 ` Russell King - ARM Linux 2011-09-20 3:24 ` Shawn Guo 2011-09-20 3:24 ` Shawn Guo 2011-09-03 16:36 ` Santosh 2011-09-03 16:36 ` Santosh 2011-09-04 10:12 ` Russell King - ARM Linux 2011-09-04 10:12 ` Russell King - ARM Linux
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