From: Richard Henderson <richard.henderson@linaro.org>
To: liuzhiwei <zhiwei_liu@c-sky.com>,
qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: peter.maydell@linaro.org, palmer@sifive.com,
sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de,
riku.voipio@iki.fi, laurent@vivier.eu, Alistair.Francis@wdc.com,
alex.bennee@linaro.org, aurelien@aurel32.net
Subject: Re: [Qemu-devel] [PATCH] RISCV: support riscv vector extension 0.7.1
Date: Thu, 29 Aug 2019 08:09:12 -0700 [thread overview]
Message-ID: <f81553cc-0f95-003e-f608-f83f9a7e8dd2@linaro.org> (raw)
In-Reply-To: <841ebe5f-dd5e-c59d-d7e9-c246ad7741c0@c-sky.com>
On 8/29/19 5:45 AM, liuzhiwei wrote:
> Even in qemu, it may be some situations that VSTART != 0. For example, a load
> instruction leads to a page fault exception in a middle position. If VSTART ==
> 0, some elements that had been loaded before the exception will be loaded once
> again.
Alternately, you can validate all of the pages before performing any memory
operations. At which point there will never be an exception in the middle.
As it turns out, you *must* do this in order to allow watchpoints to work
correctly. David Hildebrand and I are at this moment fixing this aspect of
watchpoints for s390x.
See https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg05979.html
r~
next prev parent reply other threads:[~2019-08-29 15:20 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1566959818-38369-1-git-send-email-zhiwei_liu@c-sky.com>
2019-08-28 9:08 ` [Qemu-devel] [PATCH] RISCV: support riscv vector extension 0.7.1 Alex Bennée
2019-08-28 16:39 ` Richard Henderson
2019-08-29 13:35 ` liuzhiwei
2019-08-28 18:54 ` Richard Henderson
2019-08-28 20:43 ` Richard Henderson
2019-08-29 12:45 ` liuzhiwei
2019-08-29 15:09 ` Richard Henderson [this message]
2019-09-02 7:45 ` liuzhiwei
2019-09-03 14:38 ` Richard Henderson
2019-09-02 9:43 ` liuzhiwei
2019-09-03 14:21 ` Richard Henderson
2019-12-19 9:11 ` LIU Zhiwei
2019-12-19 20:38 ` Richard Henderson
2019-12-25 9:36 ` LIU Zhiwei
2019-12-28 1:14 ` Richard Henderson
2019-12-30 8:11 ` LIU Zhiwei
2020-01-05 20:19 ` Richard Henderson
2019-08-28 21:34 ` Alistair Francis
2019-08-29 12:00 ` liuzhiwei
2019-08-29 15:14 ` Richard Henderson
2019-09-02 6:54 ` liuzhiwei
2019-08-29 21:50 ` Alistair Francis
2019-08-30 9:06 ` Alex Bennée
2019-08-30 18:39 ` Alistair Francis
2019-09-02 6:36 ` liuzhiwei
[not found] ` <CAL1e-=iHangj7w+HgJ+FM=iqRLmaY-_CYeUv0gx+c8bpScb9RQ@mail.gmail.com>
[not found] ` <46ade3da-d642-bd19-7975-7dc228d401e4@c-sky.com>
2019-08-29 18:32 ` Aleksandar Markovic
[not found] ` <CAEiOBXXofjrY2=sjuMDb9dTV2fk9yUVKnr+qmf+7mg9vki6OCw@mail.gmail.com>
2019-09-02 8:17 ` [Qemu-devel] [Qemu-riscv] " liuzhiwei
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=f81553cc-0f95-003e-f608-f83f9a7e8dd2@linaro.org \
--to=richard.henderson@linaro.org \
--cc=Alistair.Francis@wdc.com \
--cc=alex.bennee@linaro.org \
--cc=aurelien@aurel32.net \
--cc=kbastian@mail.uni-paderborn.de \
--cc=laurent@vivier.eu \
--cc=palmer@sifive.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=qemu-riscv@nongnu.org \
--cc=riku.voipio@iki.fi \
--cc=sagark@eecs.berkeley.edu \
--cc=zhiwei_liu@c-sky.com \
/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;
as well as URLs for NNTP newsgroup(s).