linux-kernel - [PATCH 11/15] arm64: Cleanup VTCR

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Message-Id: <1442331684-28818-12-git-send-email-suzuki.poulose@arm.com>
Date:	Tue, 15 Sep 2015 16:41:20 +0100
From:	"Suzuki K. Poulose" <suzuki.poulose@....com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, Catalin.Marinas@....com,
	Will.Deacon@....com, Mark.Rutland@....com, Marc.Zyngier@....com,
	kvmarm@...ts.cs.columbia.edu, kvm@...r.kernel.org,
	ard.biesheuvel@...aro.org, suzuki.poulose@....com,
	Christoffer Dall <christoffer.dall@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>
Subject: [PATCH 11/15] arm64: Cleanup VTCR_EL2 computation

From: "Suzuki K. Poulose" <suzuki.poulose@....com>

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@...aro.org>
Cc: Marc Zyngier <marc.zyngier@....com>
Cc: kvmarm@...ts.cs.columbia.edu
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@....com>
---
 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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