diff mbox

48-bit VA support in the SMMU

Message ID deb48cfb93d94515b6531be02f697e04@CY1PR0301MB0748.namprd03.prod.outlook.com (mailing list archive)
State New, archived
Headers show

Commit Message

Stuart Yoder Nov. 19, 2014, 11:29 p.m. UTC 
Hi Will,

Regarding 48-bit support at the SMMU, this patch is currently in the kernel:

commit 04f905a9569ca2b6964a35563f135fabbb2470bc
Author: Christoffer Dall <christoffer.dall@linaro.org>
Date:   Fri Oct 10 11:14:30 2014 +0100

    arm64: Allow 48-bits VA space without ARM_SMMU

    Now when KVM has been reworked to support 48-bits host VA space, we can
    allow systems to be configured with this option.  However, the ARM SMMU
    driver also needs to be tweaked for 48-bit support so only allow the
    config option to be set when not including support for theSMMU.

    Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
    Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>


Do you know the status of any work to remove this limitation?

Thanks,
Stuart
diff mbox

Patch

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index ac9afde..b8053be 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -232,7 +232,7 @@  config ARM64_VA_BITS_42

 config ARM64_VA_BITS_48
        bool "48-bit"
-       depends on BROKEN
+       depends on !ARM_SMMU

 endchoice