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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-21 11:38:31 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-08-21 15:55:53 +0300 |
| commit | a02d8dfd54cdf3b1b0464ccc2c1c4afe2c003a35 (patch) | |
| tree | b760333143b1fa4e3de0b6c22c854c67a1e47c4a /arch/arm/include | |
| parent | 3c2aed5b28819564e1a07b4686bd89802bcc4d6b (diff) | |
| download | linux-a02d8dfd54cdf3b1b0464ccc2c1c4afe2c003a35.tar.xz | |
ARM: domains: keep vectors in separate domain
Keep the machine vectors in its own domain to avoid software based
user access control from making the vector code inaccessible, and
thereby deadlocking the machine.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/domain.h | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/pgtable-2level-hwdef.h | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h index 08b601e69ddc..396a12e486fe 100644 --- a/arch/arm/include/asm/domain.h +++ b/arch/arm/include/asm/domain.h @@ -43,6 +43,7 @@ #define DOMAIN_USER 1 #define DOMAIN_IO 0 #endif +#define DOMAIN_VECTORS 3 /* * Domain types @@ -62,7 +63,8 @@ (domain_val(DOMAIN_USER, DOMAIN_CLIENT) | \ domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \ domain_val(DOMAIN_TABLE, DOMAIN_MANAGER) | \ - domain_val(DOMAIN_IO, DOMAIN_CLIENT)) + domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \ + domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT)) #ifndef __ASSEMBLY__ diff --git a/arch/arm/include/asm/pgtable-2level-hwdef.h b/arch/arm/include/asm/pgtable-2level-hwdef.h index 5e68278e953e..d0131ee6f6af 100644 --- a/arch/arm/include/asm/pgtable-2level-hwdef.h +++ b/arch/arm/include/asm/pgtable-2level-hwdef.h @@ -23,6 +23,7 @@ #define PMD_PXNTABLE (_AT(pmdval_t, 1) << 2) /* v7 */ #define PMD_BIT4 (_AT(pmdval_t, 1) << 4) #define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5) +#define PMD_DOMAIN_MASK PMD_DOMAIN(0x0f) #define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */ /* * - section |