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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-06-13 15:00:46 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-06-29 13:59:14 +0200 |
| commit | 1166f3fe6a86798e4fcd24cefb6b06da3fd0420f (patch) | |
| tree | ad6e69cd48453a63e24d45c02b364a4f03b421f3 | |
| parent | c8dddecdeb2ae95a6535855ce8a26b7197471b16 (diff) | |
| download | linux-1166f3fe6a86798e4fcd24cefb6b06da3fd0420f.tar.gz linux-1166f3fe6a86798e4fcd24cefb6b06da3fd0420f.tar.bz2 linux-1166f3fe6a86798e4fcd24cefb6b06da3fd0420f.zip | |
arm64: Add PTE_HYP_XN page table flag
EL2 page tables can be configured to deny code from being
executed, which is done by setting bit 54 in the page descriptor.
It is the same bit as PTE_UXN, but the "USER" reference felt odd
in the hypervisor code.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| -rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 2813748e2f24..c3ae239db3ee 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -164,6 +164,7 @@ #define PTE_CONT (_AT(pteval_t, 1) << 52) /* Contiguous range */ #define PTE_PXN (_AT(pteval_t, 1) << 53) /* Privileged XN */ #define PTE_UXN (_AT(pteval_t, 1) << 54) /* User XN */ +#define PTE_HYP_XN (_AT(pteval_t, 1) << 54) /* HYP XN */ /* * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers). |