From: Mark Rutland <mark.rutland@arm.com>
To: dann frazier <dann.frazier@canonical.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>, Duc Dang <dhdang@apm.com>,
Kumar Sankaran <ksankaran@apm.com>, Loc Ho <lho@apm.com>,
Feng Kan <fkan@apm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size
Date: Thu, 28 Jan 2016 11:24:55 +0000 [thread overview]
Message-ID: <20160128112454.GJ17123@leverpostej> (raw)
In-Reply-To: <1453936230-7305-1-git-send-email-dann.frazier@canonical.com>
On Wed, Jan 27, 2016 at 04:10:30PM -0700, dann frazier wrote:
> 16K page size is an optional feature of the architecture,
Technically, support for any particular page size and endianness
configuration is an optional architectural feature.
I don't think we can capture this information for each SoC family or
specific SoC.
The best thing we can do is early checks in the EFI stub (and
potentially bootloaders) to check whether the kernel's configured page
size and endianness is implemented.
Thanks,
Mark.
> and is not supported by the X-Gene SoC family.
>
> Signed-off-by: dann frazier <dann.frazier@canonical.com>
> ---
> 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
>
> --
> 2.7.0
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
prev parent reply other threads:[~2016-01-28 11:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-27 23:10 [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size dann frazier
2016-01-28 10:34 ` Catalin Marinas
2016-01-28 11:08 ` Will Deacon
2016-01-28 11:20 ` Mark Rutland
2016-01-28 14:50 ` Jeremy Linton
2016-01-28 11:27 ` Suzuki K. Poulose
2016-01-28 11:30 ` Ard Biesheuvel
2016-01-28 11:34 ` Suzuki K. Poulose
2016-01-28 11:24 ` Mark Rutland [this message]
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