From: "Alex Bennée" <alex.bennee@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sergey Fedorov <sergey.fedorov@linaro.org>,
qemu-devel@nongnu.org, mttcg@greensocs.com,
fred.konrad@greensocs.com, a.rigo@virtualopensystems.com,
serge.fdrv@gmail.com, cota@braap.org, bobby.prani@gmail.com,
rth@twiddle.net, peter.maydell@linaro.org, patches@linaro.org,
claudio.fontana@huawei.com, mark.burton@greensocs.com,
jan.kiszka@siemens.com
Subject: Re: [Qemu-devel] [PATCH v3 00/11] Reduce lock contention on TCG hot-path
Date: Thu, 14 Jul 2016 14:13:40 +0100 [thread overview]
Message-ID: <87h9bs4b23.fsf@linaro.org> (raw)
In-Reply-To: <54367505-7189-9f06-b66e-4bc4d206b8ea@redhat.com>
Paolo Bonzini <pbonzini@redhat.com> writes:
> On 14/07/2016 14:02, Alex Bennée wrote:
>> Looking at the perf data it looks like the hotest part of the code now
>> is cpu_get_tb_cpu_state which is required to get the initial hash to
>> search for the next tb.
>
> It should be possible to keep the flags up-to-date in a separate field
> of CPUARMState, similar to what x86 does.
Possibly, there is a tension between lazy and always upto date version
of the flags. But this is work for another day I think ;-)
>
> Paolo
--
Alex Bennée
prev parent reply other threads:[~2016-07-14 13:13 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-12 20:13 [Qemu-devel] [PATCH v3 00/11] Reduce lock contention on TCG hot-path Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 01/11] util/qht: Document memory ordering assumptions Sergey Fedorov
2016-07-12 23:19 ` Emilio G. Cota
2016-07-13 7:36 ` Paolo Bonzini
2016-07-13 17:50 ` Sergey Fedorov
2016-07-14 13:56 ` Paolo Bonzini
2016-07-14 14:08 ` Sergey Fedorov
2016-07-13 11:13 ` Paolo Bonzini
2016-07-13 18:03 ` Sergey Fedorov
2016-07-14 8:05 ` Paolo Bonzini
2016-07-15 12:37 ` Sergey Fedorov
2016-07-15 12:51 ` Paolo Bonzini
2016-07-15 13:18 ` Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 02/11] cpu-exec: Pass last_tb by value to tb_find_fast() Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 03/11] tcg: Prepare safe tb_jmp_cache lookup out of tb_lock Sergey Fedorov
2016-07-14 12:14 ` Alex Bennée
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 04/11] tcg: Prepare safe access to tb_flushed " Sergey Fedorov
2016-07-14 12:45 ` Alex Bennée
2016-07-14 12:55 ` Sergey Fedorov
2016-07-14 13:12 ` Alex Bennée
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 05/11] target-i386: Remove redundant HF_SOFTMMU_MASK Sergey Fedorov
2016-07-14 12:19 ` Alex Bennée
2016-07-12 20:13 ` [PATCH v3 06/11] tcg: Introduce tb_mark_invalid() and tb_is_invalid() Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] " Sergey Fedorov
2016-07-14 10:25 ` Alex Bennée
2016-07-14 10:25 ` [Qemu-devel] " Alex Bennée
2016-07-14 11:10 ` Sergey Fedorov
2016-07-14 11:10 ` [Qemu-devel] " Sergey Fedorov
2016-07-14 11:48 ` Paolo Bonzini
2016-07-14 11:48 ` [Qemu-devel] " Paolo Bonzini
2016-07-14 12:04 ` Alex Bennée
2016-07-14 12:04 ` [Qemu-devel] " Alex Bennée
2016-07-14 12:53 ` Alex Bennée
2016-07-14 12:53 ` [Qemu-devel] " Alex Bennée
2016-07-14 13:00 ` Sergey Fedorov
2016-07-14 13:00 ` [Qemu-devel] " Sergey Fedorov
2016-07-14 13:12 ` Paolo Bonzini
2016-07-14 13:12 ` [Qemu-devel] " Paolo Bonzini
2016-07-14 13:15 ` Alex Bennée
2016-07-14 13:15 ` [Qemu-devel] " Alex Bennée
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 07/11] tcg: Prepare TB invalidation for lockless TB lookup Sergey Fedorov
2016-07-14 12:59 ` Alex Bennée
2016-07-14 13:11 ` Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 08/11] tcg: set up tb->page_addr before insertion Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 09/11] tcg: cpu-exec: remove tb_lock from the hot-path Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 10/11] tcg: Avoid bouncing tb_lock between tb_gen_code() and tb_add_jump() Sergey Fedorov
2016-07-14 13:01 ` Alex Bennée
2016-07-14 13:13 ` Sergey Fedorov
2016-07-12 20:13 ` [Qemu-devel] [PATCH v3 11/11] tcg: Merge tb_find_slow() and tb_find_fast() Sergey Fedorov
2016-07-14 13:02 ` Alex Bennée
2016-07-13 7:39 ` [Qemu-devel] [PATCH v3 00/11] Reduce lock contention on TCG hot-path Paolo Bonzini
2016-07-13 17:00 ` Sergey Fedorov
2016-07-14 9:55 ` Alex Bennée
2016-07-14 11:13 ` Sergey Fedorov
2016-07-13 18:06 ` Sergey Fedorov
2016-07-14 12:02 ` Alex Bennée
2016-07-14 12:10 ` Paolo Bonzini
2016-07-14 13:13 ` Alex Bennée [this message]
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