From: "Emilio G. Cota" <cota@braap.org>
To: Aaron Lindsay <aaron@os.amperecomputing.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Pavel Dovgalyuk" <Pavel.Dovgaluk@ispras.ru>
Subject: Re: [Qemu-devel] [RFC v2 05/38] plugin: add user-facing API
Date: Fri, 14 Dec 2018 13:23:55 -0500 [thread overview]
Message-ID: <20181214182355.GA25356@flamenco> (raw)
In-Reply-To: <20181214175915.GD4314@quinoa.localdomain>
On Fri, Dec 14, 2018 at 17:59:20 +0000, Aaron Lindsay wrote:
> On Dec 14 12:08, Emilio G. Cota wrote:
(snip)
> > The idea is that a plugin can "reset" itself, so that (1) all
> > its CBs are cleared and (2) the plugin can register new callbacks.
> > This would all happen in an atomic context (no vCPU running), so
> > that the plugin would miss no CPU events.
>
> The implication being that there would not be the same possibility of
> other callbacks being called between when qemu_plugin_reset and the
> qemu_plugin_reset_cb_t callback are called as there is at plugin
> un-installation time?
The callback is needed for the same reason -- we can only guarantee
that there will be no callbacks once the current RCU read critical section
expires.
> > How does this sound?
>
> I think what you describe is exactly what I'm interested in.
Nice. I'll work on this for v3.
Thanks,
Emilio
next prev parent reply other threads:[~2018-12-14 18:24 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-09 19:37 [Qemu-devel] [RFC v2 00/38] Plugin support Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 01/38] trace: expand mem_info:size_shift to 3 bits Emilio G. Cota
2019-01-24 14:42 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 02/38] tcg/README: fix typo s/afterwise/afterwards/ Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 03/38] cpu: introduce cpu_in_exclusive_work_context() Emilio G. Cota
2019-01-24 14:44 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 04/38] translate-all: use cpu_in_exclusive_work_context() in tb_flush Emilio G. Cota
2019-01-24 14:44 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 05/38] plugin: add user-facing API Emilio G. Cota
2018-12-14 15:57 ` Aaron Lindsay
2018-12-14 16:04 ` Aaron Lindsay
2018-12-14 17:08 ` Emilio G. Cota
2018-12-14 17:50 ` Emilio G. Cota
2018-12-14 18:47 ` Aaron Lindsay
2018-12-14 19:40 ` Emilio G. Cota
2018-12-14 17:59 ` Aaron Lindsay
2018-12-14 18:23 ` Emilio G. Cota [this message]
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 06/38] plugin: add core code Emilio G. Cota
2018-12-10 11:37 ` Pavel Dovgalyuk
2018-12-10 17:40 ` Emilio G. Cota
2019-01-24 15:57 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 07/38] queue: add QTAILQ_REMOVE_SEVERAL Emilio G. Cota
2019-02-25 16:22 ` Alex Bennée
2019-02-25 18:02 ` Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 08/38] tcg: drop nargs from tcg_op_insert_{before, after} Emilio G. Cota
2018-12-13 23:52 ` Richard Henderson
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 09/38] cputlb: introduce get_page_addr_code_hostp Emilio G. Cota
2019-01-24 14:51 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 10/38] plugin-gen: add module for TCG-related code Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 11/38] tcg: add tcg_gen_st_ptr Emilio G. Cota
2019-05-20 13:36 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 12/38] tcg: add MO_HADDR to TCGMemOp Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 13/38] atomic_template: fix indentation in GEN_ATOMIC_HELPER Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 14/38] atomic_template: add inline trace/plugin helpers Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 15/38] tcg: let plugins instrument memory accesses Emilio G. Cota
2019-01-24 14:39 ` Alex Bennée
2019-05-16 15:06 ` Alex Bennée
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 16/38] translate-all: notify plugin code of tb_flush Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 17/38] *-user: notify plugin of exit Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 18/38] *-user: plugin syscalls Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 19/38] cpu: hook plugin vcpu events Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 20/38] plugin-gen: add plugin_insn_append Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 21/38] translator: add translator_ld{ub, sw, uw, l, q} Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 22/38] target/arm: call qemu_plugin_insn_append Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 23/38] target/ppc: fetch code with translator_ld Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 24/38] target/sh4: fetch code with translator_ld (WIP) Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 25/38] target/i386: fetch code with translator_ld Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 26/38] target/hppa: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 27/38] target/m68k: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 28/38] target/alpha: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 29/38] target/riscv: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 30/38] target/sparc: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 31/38] target/xtensa: " Emilio G. Cota
2019-02-25 14:54 ` Alex Bennée
2019-03-04 2:36 ` Max Filippov
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 32/38] target/openrisc: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 33/38] translator: inject instrumentation from plugins Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 34/38] plugin: add API symbols to qemu-plugins.symbols Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 35/38] configure: add --enable-plugins Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 36/38] vl: support -plugin option Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 37/38] linux-user: " Emilio G. Cota
2018-12-09 19:37 ` [Qemu-devel] [RFC v2 38/38] tests/plugin: add sample plugins Emilio G. Cota
2019-05-17 19:11 ` [Qemu-devel] [RFC PATCH] tests/tcg: enable plugin testing Alex Bennée
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