[PATCH 11/15] arm64: Cleanup VTCR_EL2 computation
From: Suzuki K. Poulose
Date: Tue Sep 15 2015 - 11:44:54 EST
From: "Suzuki K. Poulose" <suzuki.poulose@xxxxxxx>
No functional changes. Group the common bits for VCTR_EL2
initialisation for better readability. The granule size
and the entry level are controlled by the page size.
Cc: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: kvmarm@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@xxxxxxx>
---
arch/arm64/include/asm/kvm_arm.h | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index bdf139e..699554d 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -138,6 +138,9 @@
* The magic numbers used for VTTBR_X in this patch can be found in Tables
* D4-23 and D4-25 in ARM DDI 0487A.b.
*/
+#define VTCR_EL2_COMMON_BITS (VTCR_EL2_SH0_INNER | VTCR_EL2_ORGN0_WBWA | \
+ VTCR_EL2_IRGN0_WBWA | VTCR_EL2_T0SZ_40B)
+
#ifdef CONFIG_ARM64_64K_PAGES
/*
* Stage2 translation configuration:
@@ -145,9 +148,8 @@
* 64kB pages (TG0 = 1)
* 2 level page tables (SL = 1)
*/
-#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_64K | VTCR_EL2_SH0_INNER | \
- VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \
- VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B)
+#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_64K | VTCR_EL2_SL0_LVL1 | \
+ VTCR_EL2_COMMON_BITS)
#define VTTBR_X (38 - VTCR_EL2_T0SZ_40B)
#else
/*
@@ -156,9 +158,8 @@
* 4kB pages (TG0 = 0)
* 3 level page tables (SL = 1)
*/
-#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_4K | VTCR_EL2_SH0_INNER | \
- VTCR_EL2_ORGN0_WBWA | VTCR_EL2_IRGN0_WBWA | \
- VTCR_EL2_SL0_LVL1 | VTCR_EL2_T0SZ_40B)
+#define VTCR_EL2_FLAGS (VTCR_EL2_TG0_4K | VTCR_EL2_SL0_LVL1 | \
+ VTCR_EL2_COMMON_BITS)
#define VTTBR_X (37 - VTCR_EL2_T0SZ_40B)
#endif
--
1.7.9.5
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