All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
To: Dave Martin <Dave.Martin@arm.com>
Cc: mtk.manpages@gmail.com, Russell King <linux@armlinux.org.uk>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	linux-man@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] syscall.2: arm64: Fix syscall number register size
Date: Wed, 6 May 2020 12:16:07 +0200	[thread overview]
Message-ID: <82affb91-8aa9-0316-421a-3ce503e396e0@gmail.com> (raw)
In-Reply-To: <1588692280-15878-3-git-send-email-Dave.Martin@arm.com>

On 5/5/20 5:24 PM, Dave Martin wrote:
> arm64 is currently documented as receiving the syscall number in
> x8.
> 
> While this is the correct register, the syscall number is a 32-bit
> integer.  Bits [63:32] are ignored by the kernel.
> 
> So it is more correct to say "w8".

Thanks, Dave. Patch applied, with Will's Acked-by.

Cheers,

Michael

> Signed-off-by: Dave Martin <Dave.Martin@arm.com>
> ---
>  man2/syscall.2 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/man2/syscall.2 b/man2/syscall.2
> index 53ab40e..d724651 100644
> --- a/man2/syscall.2
> +++ b/man2/syscall.2
> @@ -203,7 +203,7 @@ alpha	callsys	v0	v0	a4	a3	1, 6
>  arc	trap0	r8	r0	-	-
>  arm/OABI	swi NR	-	r0	-	-	2
>  arm/EABI	swi 0x0	r7	r0	r1	-
> -arm64	svc #0	x8	x0	x1	-
> +arm64	svc #0	w8	x0	x1	-
>  blackfin	excpt 0x0	P0	R0	-	-
>  i386	int $0x80	eax	eax	edx	-
>  ia64	break 0x100000	r15	r8	r9	r10	1, 6
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/

WARNING: multiple messages have this Message-ID (diff)
From: "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>
To: Dave Martin <Dave.Martin@arm.com>
Cc: linux-man@vger.kernel.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	Russell King <linux@armlinux.org.uk>,
	mtk.manpages@gmail.com, Will Deacon <will@kernel.org>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] syscall.2: arm64: Fix syscall number register size
Date: Wed, 6 May 2020 12:16:07 +0200	[thread overview]
Message-ID: <82affb91-8aa9-0316-421a-3ce503e396e0@gmail.com> (raw)
In-Reply-To: <1588692280-15878-3-git-send-email-Dave.Martin@arm.com>

On 5/5/20 5:24 PM, Dave Martin wrote:
> arm64 is currently documented as receiving the syscall number in
> x8.
> 
> While this is the correct register, the syscall number is a 32-bit
> integer.  Bits [63:32] are ignored by the kernel.
> 
> So it is more correct to say "w8".

Thanks, Dave. Patch applied, with Will's Acked-by.

Cheers,

Michael

> Signed-off-by: Dave Martin <Dave.Martin@arm.com>
> ---
>  man2/syscall.2 | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/man2/syscall.2 b/man2/syscall.2
> index 53ab40e..d724651 100644
> --- a/man2/syscall.2
> +++ b/man2/syscall.2
> @@ -203,7 +203,7 @@ alpha	callsys	v0	v0	a4	a3	1, 6
>  arc	trap0	r8	r0	-	-
>  arm/OABI	swi NR	-	r0	-	-	2
>  arm/EABI	swi 0x0	r7	r0	r1	-
> -arm64	svc #0	x8	x0	x1	-
> +arm64	svc #0	w8	x0	x1	-
>  blackfin	excpt 0x0	P0	R0	-	-
>  i386	int $0x80	eax	eax	edx	-
>  ia64	break 0x100000	r15	r8	r9	r10	1, 6
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/

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

  parent reply	other threads:[~2020-05-06 10:16 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-05 15:24 [PATCH 0/2] syscall.2: Minor register name fixes for arm/arm64 Dave Martin
2020-05-05 15:24 ` Dave Martin
2020-05-05 15:24 ` [PATCH 1/2] syscall.2: arm: Use real register names for arm/OABI Dave Martin
2020-05-05 15:24   ` Dave Martin
2020-05-05 15:26   ` Russell King - ARM Linux admin
2020-05-05 15:26     ` Russell King - ARM Linux admin
2020-05-05 15:53     ` Dave Martin
2020-05-05 15:53       ` Dave Martin
2020-05-06 10:05   ` Michael Kerrisk (man-pages)
2020-05-06 10:05     ` Michael Kerrisk (man-pages)
2020-05-06 10:34     ` Dave Martin
2020-05-06 10:34       ` Dave Martin
2020-05-05 15:24 ` [PATCH 2/2] syscall.2: arm64: Fix syscall number register size Dave Martin
2020-05-05 15:24   ` Dave Martin
2020-05-05 15:54   ` Will Deacon
2020-05-05 15:54     ` Will Deacon
2020-05-05 16:06     ` Dave Martin
2020-05-05 16:06       ` Dave Martin
2020-05-06 10:16   ` Michael Kerrisk (man-pages) [this message]
2020-05-06 10:16     ` Michael Kerrisk (man-pages)
2020-05-06 10:35     ` Dave Martin
2020-05-06 10:35       ` Dave Martin

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=82affb91-8aa9-0316-421a-3ce503e396e0@gmail.com \
    --to=mtk.manpages@gmail.com \
    --cc=Dave.Martin@arm.com \
    --cc=catalin.marinas@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-man@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --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.