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| author | Jean-Philippe Brucker <jean-philippe.brucker@arm.com> | 2016-05-04 10:38:12 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-05-05 19:03:02 +0100 |
| commit | 5b526bd92511a12807a51b7bedd16af03e99bc33 (patch) | |
| tree | f73ff96404512a4d1a91324c4f268f8cb5fde5f1 /arch/arm/kernel | |
| parent | 695665b0c5237bee8a3d0099ea856282d5d8f25b (diff) | |
| download | linux-5b526bd92511a12807a51b7bedd16af03e99bc33.tar.bz2 | |
ARM: 8572/1: nommu: change memory reserve for the vectors
Commit 19accfd3 (ARM: move vector stubs) moved the vector stubs in an
additional page above the base vector one. This change wasn't taken into
account by the nommu memreserve.
This patch ensures that the kernel won't overwrite any vector stub on
nommu.
[changed the MPU side too]
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/head-nommu.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kernel/head-nommu.S b/arch/arm/kernel/head-nommu.S index 9b8c5a113434..fb1a69eb49c1 100644 --- a/arch/arm/kernel/head-nommu.S +++ b/arch/arm/kernel/head-nommu.S @@ -236,7 +236,7 @@ ENTRY(__setup_mpu) mov r0, #CONFIG_VECTORS_BASE @ Cover from VECTORS_BASE ldr r5,=(MPU_AP_PL1RW_PL0NA | MPU_RGN_NORMAL) /* Writing N to bits 5:1 (RSR_SZ) --> region size 2^N+1 */ - mov r6, #(((PAGE_SHIFT - 1) << MPU_RSR_SZ) | 1 << MPU_RSR_EN) + mov r6, #(((2 * PAGE_SHIFT - 1) << MPU_RSR_SZ) | 1 << MPU_RSR_EN) setup_region r0, r5, r6, MPU_DATA_SIDE @ VECTORS_BASE, PL0 NA, enabled beq 3f @ Memory-map not unified |