diff mbox series

[RFC,03/16] arm64: mm: Enable overlays for all EL1 indirect permissions

Message ID 20241206101110.1646108-4-kevin.brodsky@arm.com (mailing list archive)
State New
Headers show
Series pkeys-based page table hardening | expand

Commit Message

Kevin Brodsky Dec. 6, 2024, 10:10 a.m. UTC 
In preparation of using POE inside the kernel, enable "Overlay
applied" for all stage 1 base permissions in PIR_EL1. This ensures
that the permissions set in POR_EL1 affect all kernel mappings.

Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
---
 arch/arm64/include/asm/pgtable-prot.h | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/include/asm/pgtable-prot.h b/arch/arm64/include/asm/pgtable-prot.h
index 9f9cf13bbd95..a1c4f3837ea9 100644
--- a/arch/arm64/include/asm/pgtable-prot.h
+++ b/arch/arm64/include/asm/pgtable-prot.h
@@ -174,13 +174,13 @@  static inline bool __pure lpa2_is_enabled(void)
 	PIRx_ELx_PERM(pte_pi_index(_PAGE_GCS),           PIE_NONE_O) | \
 	PIRx_ELx_PERM(pte_pi_index(_PAGE_GCS_RO),        PIE_NONE_O) | \
 	PIRx_ELx_PERM(pte_pi_index(_PAGE_EXECONLY),      PIE_NONE_O) | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY_EXEC), PIE_R)      | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED_EXEC),   PIE_RW)     | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY),      PIE_R)      | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED),        PIE_RW)     | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_ROX),    PIE_RX)     | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_EXEC),   PIE_RWX)    | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_RO),     PIE_R)      | \
-	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL),        PIE_RW))
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY_EXEC), PIE_R_O)    | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED_EXEC),   PIE_RW_O)   | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_READONLY),      PIE_R_O)    | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_SHARED),        PIE_RW_O)   | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_ROX),    PIE_RX_O)   | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_EXEC),   PIE_RWX_O)  | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL_RO),     PIE_R_O)    | \
+	PIRx_ELx_PERM(pte_pi_index(_PAGE_KERNEL),        PIE_RW_O))
 
 #endif /* __ASM_PGTABLE_PROT_H */