From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Thu, 28 Jan 2016 10:34:41 +0000 Subject: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size In-Reply-To: <1453936230-7305-1-git-send-email-dann.frazier@canonical.com> References: <1453936230-7305-1-git-send-email-dann.frazier@canonical.com> Message-ID: <20160128103441.GS14823@e104818-lin.cambridge.arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jan 27, 2016 at 04:10:30PM -0700, dann frazier wrote: > 16K page size is an optional feature of the architecture, and is not > supported by the X-Gene SoC family. > > Signed-off-by: dann frazier > --- > arch/arm64/Kconfig.platforms | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms > index 21074f6..b241290 100644 > --- a/arch/arm64/Kconfig.platforms > +++ b/arch/arm64/Kconfig.platforms > @@ -133,6 +133,7 @@ config ARCH_VEXPRESS > > config ARCH_XGENE > bool "AppliedMicro X-Gene SOC Family" > + depends on !ARM64_16K_PAGES > help > This enables support for AppliedMicro X-Gene SOC Family This would be the case on Juno as well. But maybe at some point the X-Gene family would gain a CPU with such support. Anyway, I would rather make 16K pages depend on EXPERT, make it a bit harder to enable. We've had a few questions recently about enabling it on CPUs that don't have such feature. -- Catalin