As the EL2 nVHE object is nicely split into sections and that we already differenciating permissions for data and code, we can enable SCTLR_EL2.WXN so that we don't have to worry about misconfiguration of the page tables.
Flip the WXN bit and get the ball running! Signed-off-by: Marc Zyngier <[email protected]> --- arch/arm64/include/asm/sysreg.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 9d1aef631646..cc17f7d487ed 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -580,7 +580,8 @@ #define SCTLR_ELx_M (BIT(0)) #define SCTLR_EL2_FLAGS (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \ - SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB) + SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB | \ + SCTLR_ELx_WXN) /* SCTLR_EL2 specific flags. */ #define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \ -- 2.29.2 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
