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| From | Ard Biesheuvel <ard.biesheuvel@linaro.org> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size |
| Date | Thu, 28 Jan 2016 12:40:03 +0100 |
| Message-ID | <qVT5F-2Js-27@gated-at.bofh.it> (permalink) |
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| X-Original-Cc | Will Deacon <will.deacon@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Feng Kan <fkan@apm.com>, dann frazier <dann.frazier@canonical.com>, Duc Dang <dhdang@apm.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Loc Ho <lho@apm.com>, Kumar Sankaran <ksankaran@apm.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> |
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| X-Original-References | <1453936230-7305-1-git-send-email-dann.frazier@canonical.com> <20160128103441.GS14823@e104818-lin.cambridge.arm.com> <20160128110820.GE30928@arm.com> <56A9FB15.1080203@arm.com> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1320595 |
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On 28 January 2016 at 12:27, Suzuki K. Poulose <Suzuki.Poulose@arm.com> wrote: > On 28/01/16 11:08, Will Deacon wrote: >> >> On Thu, Jan 28, 2016 at 10:34:41AM +0000, Catalin Marinas wrote: >>> >>> 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. > > > 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. >> >> >> I thought there was also a suggestion that we could fail gracefully in >> the EFI stub if we detected an unsupported page size? > > > Yes, there was. But then it was also recommended [1] to add a new stubbed > function > for both arm & arm64, where it got lost. May be we should revive it. > > https://lkml.org/lkml/2015/10/15/489 > I can pick this up -- Ard.
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[PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size dann frazier <dann.frazier@canonical.com> - 2016-01-28 00:20 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Catalin Marinas <catalin.marinas@arm.com> - 2016-01-28 11:40 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Will Deacon <will.deacon@arm.com> - 2016-01-28 12:10 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2016-01-28 12:30 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-01-28 12:40 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size "Suzuki K. Poulose" <Suzuki.Poulose@arm.com> - 2016-01-28 12:40 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Mark Rutland <mark.rutland@arm.com> - 2016-01-28 12:30 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Jeremy Linton <jeremy.linton@arm.com> - 2016-01-28 16:00 +0100
Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page size Mark Rutland <mark.rutland@arm.com> - 2016-01-28 12:30 +0100
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