Thread (13 messages) 13 messages, 4 authors, 2019-08-30
STALE2519d

[PATCH 4/6] arm64: sysreg: Add some field definitions for PAR_EL1

From: Will Deacon <will@kernel.org>
Date: 2019-08-27 13:22:29
Also in: linux-arch
Subsystem: arm64 port (aarch64 architecture), the rest · Maintainers: Catalin Marinas, Will Deacon, Linus Torvalds

PAR_EL1 is a mysterious creature, but sometimes it's necessary to read
it when translating addresses in situations where we cannot walk the
page table directly.

Add a couple of system register definitions for the fault indication
field ('F') and the fault status code ('FST').

Signed-off-by: Will Deacon <will@kernel.org>
---
 arch/arm64/include/asm/sysreg.h | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 06ebcfef73df..2b229c23f3c1 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -212,6 +212,9 @@
 #define SYS_FAR_EL1			sys_reg(3, 0, 6, 0, 0)
 #define SYS_PAR_EL1			sys_reg(3, 0, 7, 4, 0)
 
+#define SYS_PAR_EL1_F			BIT(1)
+#define SYS_PAR_EL1_FST			GENMASK(6, 1)
+
 /*** Statistical Profiling Extension ***/
 /* ID registers */
 #define SYS_PMSIDR_EL1			sys_reg(3, 0, 9, 9, 7)
-- 
2.11.0


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