Commit 1166f3fe authored by Marc Zyngier's avatar Marc Zyngier Committed by Christoffer Dall
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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: default avatarMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent c8dddecd

arch/arm64/include/asm/pgtable-hwdef.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -164,6 +164,7 @@ 
#define PTE_CONT		(_AT(pteval_t, 1) << 52)	/* Contiguous range */

#define PTE_CONT		(_AT(pteval_t, 1) << 52)	/* Contiguous range */

#define PTE_PXN			(_AT(pteval_t, 1) << 53)	/* Privileged XN */

#define PTE_PXN			(_AT(pteval_t, 1) << 53)	/* Privileged XN */

#define PTE_UXN			(_AT(pteval_t, 1) << 54)	/* User 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).

 * AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).