From: Christopher Covington <cov@codeaurora.org>
To: Russell King <linux@arm.linux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>
Cc: "Christopher Covington" <cov@codeaurora.org>,
"Pawel Moll" <Pawel.Moll@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Stephen Warren" <swarren@nvidia.com>,
"Viresh Kumar" <viresh.kumar@linaro.org>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Matthew Leach" <matthew.leach@arm.com>,
"Sudeep KarkadaNagesha" <sudeep.karkadanagesha@arm.com>,
"Nicolas Pitre" <nico@linaro.org>,
"Stephen Boyd" <sboyd@codeaurora.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2] ARM: virt, vexpress: Use 64-bit DMA for LPAE
Date: Wed, 25 Jun 2014 13:50:28 -0400 [thread overview]
Message-ID: <1403718631-25194-1-git-send-email-cov@codeaurora.org> (raw)
In-Reply-To: <5331B14B.7040103@codeaurora.org>
On an LPAE system, the physical addresses used by VirtIO-MMIO may be
higher than 32 bits. For example on a Versatile Express system with
4G RAM, the following error surfaces when trying to use a VirtIO-MMIO
block device.
EXT2-fs (vda): error: ext2_check_page: bad entry in directory #2: : unaligned directory entry - offset=0, inode=3755990991, rec_len=57311, name_len=223
To fix this, select ARCH_DMA_ADDR_T_64BIT when LPAE is selected
and mach-vexpress, mach-virt, or both are being built.
Signed-off-by: Christopher Covington <cov@codeaurora.org>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-vexpress/Kconfig | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 245058b..8407c28 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -901,6 +901,7 @@ endmenu
config ARCH_VIRT
bool "Dummy Virtual Machine" if ARCH_MULTI_V7
+ select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
select ARM_AMBA
select ARM_GIC
select ARM_PSCI
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index 99c1f15..5f33e16 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -1,5 +1,6 @@
menuconfig ARCH_VEXPRESS
bool "ARM Ltd. Versatile Express family" if ARCH_MULTI_V7
+ select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
select ARCH_REQUIRE_GPIOLIB
select ARCH_SUPPORTS_BIG_ENDIAN
select ARM_AMBA
--
Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by the Linux Foundation.
next prev parent reply other threads:[~2014-06-25 17:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-19 17:35 [PATCH] ARM: Use 64-bit DMA addresses for LPAE+VirtIO-MMIO Christopher Covington
2014-03-21 16:27 ` Catalin Marinas
2014-03-21 19:44 ` Christopher Covington
2014-03-21 23:27 ` Catalin Marinas
2014-03-21 23:52 ` Arnd Bergmann
2014-03-24 9:50 ` Catalin Marinas
2014-03-25 16:39 ` Christopher Covington
2014-06-25 17:50 ` Christopher Covington [this message]
2014-03-24 14:14 ` Christopher Covington
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