From: "Dmitry V. Levin" <ldv@strace.io>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Alexey Gladkov <legion@kernel.org>,
Oleg Nesterov <oleg@redhat.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Eugene Syromyatnikov <evgsyr@gmail.com>,
Mike Frysinger <vapier@gentoo.org>,
Renzo Davoli <renzo@cs.unibo.it>,
Davide Berardi <berardi.dav@gmail.com>,
strace-devel@lists.strace.io,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>,
Naveen N Rao <naveen@kernel.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/7] powerpc: properly negate error in syscall_set_return_value()
Date: Mon, 27 Jan 2025 13:20:23 +0200 [thread overview]
Message-ID: <20250127112023.GB29522@strace.io> (raw)
In-Reply-To: <86079b5c-e124-489b-8136-05ae5700cb61@csgroup.eu>
On Thu, Jan 23, 2025 at 11:07:21PM +0100, Christophe Leroy wrote:
[...]
> To add a bit more to the confusion,
Looks like there is no end to it:
static inline long regs_return_value(struct pt_regs *regs)
{
if (trap_is_scv(regs))
return regs->gpr[3];
if (is_syscall_success(regs))
return regs->gpr[3];
else
return -regs->gpr[3];
}
static inline void regs_set_return_value(struct pt_regs *regs, unsigned long rc)
{
regs->gpr[3] = rc;
}
This doesn't look consistent, does it?
--
ldv
next prev parent reply other threads:[~2025-01-27 11:20 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20250113170925.GA392@strace.io>
2025-01-13 17:10 ` [PATCH v2 1/7] powerpc: properly negate error in syscall_set_return_value() Dmitry V. Levin
2025-01-13 17:34 ` Christophe Leroy
2025-01-13 17:54 ` Dmitry V. Levin
2025-01-14 17:04 ` Dmitry V. Levin
2025-01-20 13:51 ` Christophe Leroy
2025-01-20 17:12 ` Dmitry V. Levin
2025-01-21 11:13 ` Madhavan Srinivasan
2025-01-21 11:28 ` Christophe Leroy
2025-01-21 12:25 ` Madhavan Srinivasan
2025-01-21 12:42 ` Dmitry V. Levin
2025-01-23 18:28 ` Dmitry V. Levin
2025-01-23 19:11 ` Eugene Syromyatnikov
2025-01-23 22:16 ` Dmitry V. Levin
2025-01-23 22:07 ` Christophe Leroy
2025-01-23 22:35 ` Dmitry V. Levin
2025-01-27 11:20 ` Dmitry V. Levin [this message]
2025-01-27 11:36 ` Christophe Leroy
2025-01-27 11:44 ` Dmitry V. Levin
2025-01-27 12:04 ` Christophe Leroy
2025-01-27 12:26 ` Dmitry V. Levin
2025-01-23 23:43 ` Dmitry V. Levin
2025-01-24 15:18 ` Alexey Gladkov
2025-01-25 0:25 ` Dmitry V. Levin
2025-01-25 12:18 ` Michael Ellerman
2025-01-27 11:13 ` Dmitry V. Levin
2025-01-25 12:17 ` Michael Ellerman
2025-01-25 20:48 ` Dmitry V. Levin
2025-01-25 12:17 ` Michael Ellerman
2025-01-25 21:25 ` Dmitry V. Levin
2025-01-14 13:00 ` Alexey Gladkov
2025-01-14 13:48 ` Dmitry V. Levin
2025-01-14 14:53 ` Alexey Gladkov
2025-01-13 17:11 ` [PATCH v2 3/7] syscall.h: add syscall_set_arguments() and syscall_set_return_value() Dmitry V. Levin
2025-01-16 2:20 ` Charlie Jenkins
2025-01-17 0:59 ` H. Peter Anvin
2025-01-17 15:45 ` Eugene Syromyatnikov
2025-01-18 4:34 ` H. Peter Anvin
2025-01-13 17:11 ` [PATCH v2 4/7] syscall.h: introduce syscall_set_nr() Dmitry V. Levin
2025-01-16 2:20 ` Charlie Jenkins
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