From: "Suzuki K. Poulose" <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, Catalin.Marinas@arm.com,
Will.Deacon@arm.com, Mark.Rutland@arm.com, Marc.Zyngier@arm.com,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
ard.biesheuvel@linaro.org, suzuki.poulose@arm.com,
Christoffer Dall <christoffer.dall@linaro.org>,
Marc Zyngier <marc.zyngier@arm.com>
Subject: [PATCH 11/15] arm64: Cleanup VTCR_EL2 computation
Date: Tue, 15 Sep 2015 16:41:20 +0100 [thread overview]
Message-ID: <1442331684-28818-12-git-send-email-suzuki.poulose@arm.com> (raw)
In-Reply-To: <1442331684-28818-1-git-send-email-suzuki.poulose@arm.com>
From: "Suzuki K. Poulose" <suzuki.poulose@arm.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@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.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
next prev parent reply other threads:[~2015-09-15 15:44 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-15 15:41 [PATCHv2 00/15] arm64: 16K translation granule support Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 01/15] arm64: Move swapper pagetable definitions Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 02/15] arm64: Handle section maps for swapper/idmap Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 03/15] arm64: Introduce helpers for page table levels Suzuki K. Poulose
2015-10-07 8:26 ` Christoffer Dall
2015-10-07 9:26 ` Marc Zyngier
2015-10-07 9:48 ` Suzuki K. Poulose
2015-10-08 14:45 ` Christoffer Dall
2015-10-08 17:22 ` Suzuki K. Poulose
2015-10-08 17:28 ` Catalin Marinas
2015-10-09 9:22 ` Suzuki K. Poulose
2015-10-07 9:51 ` Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 04/15] arm64: Calculate size for idmap_pg_dir at compile time Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 05/15] arm64: Handle 4 level page table for swapper Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 06/15] arm64: Clean config usages for page size Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 07/15] arm64: Kconfig: Fix help text about AArch32 support with 64K pages Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 08/15] arm64: Check for selected granule support Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 09/15] arm64: Add page size to the kernel image header Suzuki K. Poulose
2015-10-02 15:49 ` Catalin Marinas
2015-10-02 16:31 ` Catalin Marinas
2015-10-02 16:50 ` Marc Zyngier
2015-10-05 15:43 ` Christoffer Dall
2015-10-05 13:02 ` Suzuki K. Poulose
2015-10-05 13:22 ` Ard Biesheuvel
2015-10-10 17:22 ` Christoffer Dall
2015-09-15 15:41 ` [PATCH 10/15] arm64: kvm: Fix {V}TCR_EL2_TG0 mask Suzuki K. Poulose
2015-10-08 15:17 ` Christoffer Dall
2015-09-15 15:41 ` Suzuki K. Poulose [this message]
2015-10-07 10:11 ` [PATCH 11/15] arm64: Cleanup VTCR_EL2 computation Marc Zyngier
2015-10-07 10:23 ` Suzuki K. Poulose
2015-10-10 17:22 ` Christoffer Dall
2015-09-15 15:41 ` [PATCH 12/15] arm: kvm: Move fake PGD handling to arch specific files Suzuki K. Poulose
2015-10-07 10:23 ` Marc Zyngier
2015-10-10 17:22 ` Christoffer Dall
2015-09-15 15:41 ` [PATCH 13/15] arm64: kvm: Rewrite fake pgd handling Suzuki K. Poulose
2015-10-07 11:13 ` Marc Zyngier
2015-10-07 12:21 ` Suzuki K. Poulose
2015-10-10 14:52 ` Christoffer Dall
2015-10-12 9:55 ` Suzuki K. Poulose
2015-10-13 15:39 ` Christoffer Dall
2015-10-13 16:04 ` Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 14/15] arm64: Add 16K page size support Suzuki K. Poulose
2015-09-15 15:41 ` [PATCH 15/15] arm64: 36 bit VA Suzuki K. Poulose
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