All of lore.kernel.org
 help / color / mirror / Atom feed
From: Vladimir Murzin <vladimir.murzin@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
	linux-arm-kernel@lists.infradead.org
Cc: Will Deacon <will@kernel.org>
Subject: Re: [PATCH v2 0/2] arm64: Simplify gas LSE support detection
Date: Wed, 15 Jan 2020 12:49:17 +0000	[thread overview]
Message-ID: <df4eda09-3234-8e32-6ea3-6fc6628cae05@arm.com> (raw)
In-Reply-To: <20200115113008.3334-1-catalin.marinas@arm.com>

On 1/15/20 11:30 AM, Catalin Marinas wrote:
> Version two of the patch series moving the LSE assembler support
> detection from Makefile to Kconfig.
> 
> Changes since v1 [1]:
> 
> - Re-introduce the Makefile warning if the .config contains
>   CONFIG_ARM64_USE_LSE_ATOMICS but the assembler does not support the
>   feature, disabling CONFIG_ARM64_LSE_ATOMICS.
> 
> [1] http://lkml.kernel.org/r/20200109174948.48211-1-catalin.marinas@arm.com
> 
> Catalin Marinas (2):
>   kbuild: Add support for 'as-instr' to be used in Kconfig files
>   arm64: Move the LSE gas support detection to Kconfig
> 
>  arch/arm64/Kconfig                    |  5 +++++
>  arch/arm64/Makefile                   | 11 ++++-------
>  arch/arm64/include/asm/atomic_ll_sc.h |  2 +-
>  arch/arm64/include/asm/lse.h          |  6 +++---
>  arch/arm64/kernel/cpufeature.c        |  4 ++--
>  scripts/Kconfig.include               |  4 ++++
>  6 files changed, 19 insertions(+), 13 deletions(-)
> 
> 

with

aarch64-linux-gnu-gcc (crosstool-NG linaro-1.13.1-4.9-2014.09 - Linaro GCC 4.9-2014.09) 4.9.2 20140904 (prerelease)

I see (among other warnings)

    arch/arm64/Makefile:35: LSE atomics not supported by binutils

while with

aarch64-none-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10)) 9.2.1 20191025

warning disappears.


FWIW:

Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>


Thanks
Vladimir

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-01-15 12:49 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-15 11:30 [PATCH v2 0/2] arm64: Simplify gas LSE support detection Catalin Marinas
2020-01-15 11:30 ` [PATCH v2 1/2] kbuild: Add support for 'as-instr' to be used in Kconfig files Catalin Marinas
2020-01-15 11:30 ` [PATCH v2 2/2] arm64: Move the LSE gas support detection to Kconfig Catalin Marinas
2020-01-15 12:49 ` Vladimir Murzin [this message]
2020-01-15 12:51   ` [PATCH v2 0/2] arm64: Simplify gas LSE support detection Will Deacon
2020-01-15 12:59     ` Vladimir Murzin
2020-01-15 13:24       ` Will Deacon

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=df4eda09-3234-8e32-6ea3-6fc6628cae05@arm.com \
    --to=vladimir.murzin@arm.com \
    --cc=catalin.marinas@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=will@kernel.org \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.