linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Catalin Marinas <catalin.marinas@arm.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, mark.rutland@arm.com,
	ard.biesheuvel@linaro.org, marc.zyngier@arm.com,
	will.deacon@arm.com, linux-kernel@vger.kernel.org,
	kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v3 0/2] arm64: Support systems without FP/ASIMD
Date: Wed, 16 Nov 2016 18:11:34 +0000	[thread overview]
Message-ID: <20161116181133.GC3224@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <1478613381-5718-1-git-send-email-suzuki.poulose@arm.com>

On Tue, Nov 08, 2016 at 01:56:19PM +0000, Suzuki K. Poulose wrote:
> This series adds supports to the kernel and KVM hyp to handle
> systems without FP/ASIMD properly. At the moment the kernel
> doesn't check if the FP unit is available before accessing
> the registers (e.g during context switch). Also for KVM,
> we trap the FP/ASIMD accesses and handle it by injecting an
> undefined instruction into the VM on systems without FP.
> 
> Tested on a FVP_Base-AEM-v8A model by disabling VFP on at
> least one CPU ( -C clusterX.cpuY.vfp-present=0 ).
> 
> Changes since V2:
>  - Dropped cleanup patch for arm64/crypto/aes-ce-ccm-glue.c
>  - Removed static_key check from cpus_have_cap. All users with
>    constant caps should use the new API to make use of static_keys.
>  - Removed a dedicated static_key used in irqchip-gic-v3.c for
>    Cavium errata with the new API.
> 
> Applies on v4.9-rc4 + [1] (which is pushed for rc5)
> 
> [1] http://marc.info/?l=linux-arm-kernel&m=147819889813214&w=2

I queued the patches for 4.10 with a slight modification as I haven't
cherry-picked the patch above. I'll push the for-next/core branch out
once I've done some testing.

Thanks.

-- 
Catalin

      parent reply	other threads:[~2016-11-16 18:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-08 13:56 Suzuki K Poulose
2016-11-08 13:56 ` [PATCH v3 1/2] arm64: Add hypervisor safe helper for checking constant capabilities Suzuki K Poulose
2016-11-08 18:11   ` Will Deacon
2016-11-08 13:56 ` [PATCH v3 2/2] arm64: Support systems without FP/ASIMD Suzuki K Poulose
2016-11-14 11:48   ` Catalin Marinas
2016-11-15 10:42     ` Suzuki K Poulose
2016-11-11 13:41 ` [PATCH v3 0/2] " Marc Zyngier
2016-11-14 11:08   ` Catalin Marinas
2016-11-16 18:11 ` Catalin Marinas [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20161116181133.GC3224@e104818-lin.cambridge.arm.com \
    --to=catalin.marinas@arm.com \
    --cc=ard.biesheuvel@linaro.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=marc.zyngier@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=suzuki.poulose@arm.com \
    --cc=will.deacon@arm.com \
    --subject='Re: [PATCH v3 0/2] arm64: Support systems without FP/ASIMD' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).