From: guoren@kernel.org
To: arnd@arndb.de
Cc: guoren@kernel.org, linux-kernel@vger.kernel.org,
rostedt@goodmis.org, mingo@redhat.com, oleg@redhat.com,
linux-arch@vger.kernel.org, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH 03/14] csky: fixup remove vdsp implement for kernel.
Date: Mon, 31 Dec 2018 23:32:55 +0800 [thread overview]
Message-ID: <1546270384-4590-3-git-send-email-guoren@kernel.org> (raw)
In-Reply-To: <1546270384-4590-1-git-send-email-guoren@kernel.org>
From: Guo Ren <ren_guo@c-sky.com>
The vr regs for vdsp only saved in task_switch not in every
exception trap-in. The memcpy with vdsp instructions will
destroy the vr regs for user space applications.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
arch/csky/abiv2/memcpy.S | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/csky/abiv2/memcpy.S b/arch/csky/abiv2/memcpy.S
index 987fec6..145bf3a 100644
--- a/arch/csky/abiv2/memcpy.S
+++ b/arch/csky/abiv2/memcpy.S
@@ -27,13 +27,7 @@ ENTRY(memcpy)
LABLE_ALIGN
.L_len_larger_16bytes:
-#if defined(__CSKY_VDSPV2__)
- vldx.8 vr0, (r1), r19
- PRE_BNEZAD (r18)
- addi r1, 16
- vstx.8 vr0, (r0), r19
- addi r0, 16
-#elif defined(__CK860__)
+#if defined(__CK860__)
ldw r3, (r1, 0)
stw r3, (r0, 0)
ldw r3, (r1, 4)
--
2.7.4
next prev parent reply other threads:[~2018-12-31 15:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-31 15:32 [PATCH 01/14] csky: fixup abiv2 mmap(... O_SYNC) failed guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:32 ` [PATCH 02/14] csky: bugfix gdb coredump error guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:32 ` guoren [this message]
2018-12-31 15:32 ` [PATCH 03/14] csky: fixup remove vdsp implement for kernel guoren
2018-12-31 15:32 ` [PATCH 04/14] csky: remove syscall_exit_work guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:32 ` [PATCH 05/14] csky: fixup save hi,lo,dspcr regs in switch_stack guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:32 ` [PATCH 07/14] csky: CPU-hotplug supported for SMP guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:32 ` [PATCH 08/14] csky: stacktrace supported guoren
2018-12-31 15:32 ` guoren
2018-12-31 15:33 ` [PATCH 09/14] csky: optimize kernel panic print guoren
2018-12-31 15:33 ` guoren
2018-12-31 15:33 ` [PATCH 10/14] csky: remove unused members in processor.h guoren
2018-12-31 15:33 ` guoren
2018-12-31 15:33 ` [PATCH 11/14] csky: basic ftrace supported guoren
2018-12-31 15:33 ` guoren
2018-12-31 15:33 ` [PATCH 12/14] csky: ftrace call graph supported guoren
2018-12-31 15:33 ` guoren
2018-12-31 15:33 ` [PATCH 14/14] csky: Add EM_CSKY_OLD 39 guoren
2018-12-31 15:33 ` guoren
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=1546270384-4590-3-git-send-email-guoren@kernel.org \
--to=guoren@kernel.org \
--cc=arnd@arndb.de \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=oleg@redhat.com \
--cc=ren_guo@c-sky.com \
--cc=rostedt@goodmis.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox