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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-06-13 16:00:49 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2016-06-29 14:01:34 +0200 |
| commit | 0996353f8ec6c6dba4a1f916bf6d9ace6f7d2b49 (patch) | |
| tree | 9fd6fce8a984beb595b3289100bfdd70d54525d7 /arch/arm64/include/asm/pgtable-prot.h | |
| parent | arm/arm64: KVM: Map the HYP text as read-only (diff) | |
| download | linux-0996353f8ec6c6dba4a1f916bf6d9ace6f7d2b49.tar.xz linux-0996353f8ec6c6dba4a1f916bf6d9ace6f7d2b49.zip | |
arm/arm64: KVM: Make default HYP mappings non-excutable
Structures that can be generally written to don't have any requirement
to be executable (quite the opposite). This includes the kvm and vcpu
structures, as well as the stacks.
Let's change the default to incorporate the XN flag.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/pgtable-prot.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable-prot.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/pgtable-prot.h b/arch/arm64/include/asm/pgtable-prot.h index 380204847c20..39f5252673f7 100644 --- a/arch/arm64/include/asm/pgtable-prot.h +++ b/arch/arm64/include/asm/pgtable-prot.h @@ -55,7 +55,7 @@ #define PAGE_KERNEL_EXEC __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE) #define PAGE_KERNEL_EXEC_CONT __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE | PTE_CONT) -#define PAGE_HYP __pgprot(_PAGE_DEFAULT | PTE_HYP) +#define PAGE_HYP __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_HYP_XN) #define PAGE_HYP_EXEC __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY) #define PAGE_HYP_RO __pgprot(_PAGE_DEFAULT | PTE_HYP | PTE_RDONLY | PTE_HYP_XN) #define PAGE_HYP_DEVICE __pgprot(PROT_DEVICE_nGnRE | PTE_HYP) |