From: Steven Rostedt <rostedt@goodmis.org>
To: Anup Patel <Anup.Patel@wdc.com>
Cc: Changbin Du <changbin.du@gmail.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
"linux-riscv@lists.infradead.org"
<linux-riscv@lists.infradead.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
"aou@eecs.berkeley.edu" <aou@eecs.berkeley.edu>,
"peterz@infradead.org" <peterz@infradead.org>,
"jpoimboe@redhat.com" <jpoimboe@redhat.com>,
"jbaron@akamai.com" <jbaron@akamai.com>,
"ardb@kernel.org" <ardb@kernel.org>,
Atish Patra <Atish.Patra@wdc.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"rppt@kernel.org" <rppt@kernel.org>,
"mhiramat@kernel.org" <mhiramat@kernel.org>,
"zong.li@sifive.com" <zong.li@sifive.com>,
"guoren@linux.alibaba.com" <guoren@linux.alibaba.com>,
"wangkefeng.wang@huawei.com" <wangkefeng.wang@huawei.com>,
"0x7f454c46@gmail.com" <0x7f454c46@gmail.com>,
"chenhuang5@huawei.com" <chenhuang5@huawei.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kernel-team@android.com" <kernel-team@android.com>,
Palmer Dabbelt <palmerdabbelt@google.com>
Subject: Re: [PATCH] RISC-V: insn: Use a raw spinlock to protect TEXT_POKE*
Date: Fri, 30 Apr 2021 07:34:31 -0400 [thread overview]
Message-ID: <20210430073431.1bc4946d@oasis.local.home> (raw)
In-Reply-To: <MN2PR04MB6207E102997326E6513416AB8D5E9@MN2PR04MB6207.namprd04.prod.outlook.com>
On Fri, 30 Apr 2021 04:06:35 +0000
Anup Patel <Anup.Patel@wdc.com> wrote:
> This patch only takes care of ftrace path.
>
> The RISC-V instruction patching is used by RISC-V jump label implementation
> as well and will called from various critical parts of core kernel.
>
> The RAW spinlock approach allows same instruction patching to be used
> for kprobes, ftrace, and jump label.
So what path hits this outside of stop machine?
-- Steve
next prev parent reply other threads:[~2021-04-30 11:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 6:17 [PATCH] RISC-V: insn: Use a raw spinlock to protect TEXT_POKE* Palmer Dabbelt
2021-04-29 7:55 ` Anup Patel
2021-04-29 16:30 ` Steven Rostedt
2021-04-29 21:54 ` Changbin Du
2021-04-30 2:47 ` Steven Rostedt
2021-04-30 4:06 ` Anup Patel
2021-04-30 11:34 ` Steven Rostedt [this message]
2021-04-30 19:44 ` Palmer Dabbelt
2021-05-06 7:11 ` Palmer Dabbelt
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=20210430073431.1bc4946d@oasis.local.home \
--to=rostedt@goodmis.org \
--cc=0x7f454c46@gmail.com \
--cc=Anup.Patel@wdc.com \
--cc=Atish.Patra@wdc.com \
--cc=akpm@linux-foundation.org \
--cc=aou@eecs.berkeley.edu \
--cc=ardb@kernel.org \
--cc=changbin.du@gmail.com \
--cc=chenhuang5@huawei.com \
--cc=guoren@linux.alibaba.com \
--cc=jbaron@akamai.com \
--cc=jpoimboe@redhat.com \
--cc=kernel-team@android.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=mhiramat@kernel.org \
--cc=palmer@dabbelt.com \
--cc=palmerdabbelt@google.com \
--cc=paul.walmsley@sifive.com \
--cc=peterz@infradead.org \
--cc=rppt@kernel.org \
--cc=wangkefeng.wang@huawei.com \
--cc=zong.li@sifive.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).