From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Fri, 10 Oct 2014 16:10:53 +0100 Subject: [PATCH v3 3/3] arm64: Allow 48-bits VA space without ARM_SMMU In-Reply-To: <1412936070-18860-4-git-send-email-christoffer.dall@linaro.org> References: <1412936070-18860-1-git-send-email-christoffer.dall@linaro.org> <1412936070-18860-4-git-send-email-christoffer.dall@linaro.org> Message-ID: <20141010151053.GC7758@e104818-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Oct 10, 2014 at 11:14:30AM +0100, Christoffer Dall wrote: > 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 > --- > arch/arm64/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index fd4e81a..a76c6c3b 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -200,7 +200,7 @@ config ARM64_VA_BITS_42 > > config ARM64_VA_BITS_48 > bool "48-bit" > - depends on BROKEN > + depends on !ARM_SMMU > > endchoice I think we should rather merge this separately via the arm64 tree once we test 48-bit VA some more (and as you noticed, there is a bug already). -- Catalin