From: Richard Henderson <richard.henderson@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: peterx@redhat.com, imammedo@redhat.com
Subject: Re: [PATCH 17/18] accel: make all calls to qemu_wait_io_event look the same
Date: Sat, 30 Aug 2025 08:16:11 +1000 [thread overview]
Message-ID: <7deb3e06-96a6-4ad8-ac51-6387b5f51ccf@linaro.org> (raw)
In-Reply-To: <20250829153115.1590048-13-pbonzini@redhat.com>
On 8/30/25 01:31, Paolo Bonzini wrote:
> There is no reason for some accelerators to use qemu_wait_io_event_common
> (which is separated from qemu_wait_io_event() specifically for round
> robin). They can also check for events directly on the first pass through
> the loop, instead of setting cpu->exit_request to true.
>
> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
> ---
> accel/dummy-cpus.c | 2 +-
> accel/hvf/hvf-accel-ops.c | 2 +-
> accel/kvm/kvm-accel-ops.c | 3 ++-
> accel/tcg/tcg-accel-ops-mttcg.c | 7 ++---
> accel/tcg/tcg-accel-ops-rr.c | 43 ++++++++++++++-----------------
> target/i386/nvmm/nvmm-accel-ops.c | 6 ++---
> target/i386/whpx/whpx-accel-ops.c | 6 ++---
> 7 files changed, 30 insertions(+), 39 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
To-do for myself: It appears as if we can reduce the number of checks for cpu == NULL in
the rr loop by moving the cpu=first_cpu assignment to the right place.
r~
next prev parent reply other threads:[~2025-08-30 16:12 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-29 15:28 [PATCH v2 00/18] accel, cpus: clean up cpu->exit_request Paolo Bonzini
2025-08-29 15:28 ` [PATCH 01/18] target/ppc: limit cpu_interrupt_exittb to system emulation Paolo Bonzini
2025-08-29 21:32 ` Richard Henderson
2025-09-01 13:03 ` Igor Mammedov
2025-08-29 15:28 ` [PATCH 02/18] target/sparc: limit cpu_check_irqs " Paolo Bonzini
2025-08-29 21:32 ` Richard Henderson
2025-09-01 11:20 ` Philippe Mathieu-Daudé
2025-08-29 15:28 ` [PATCH 03/18] target/i386: limit a20 " Paolo Bonzini
2025-08-29 21:32 ` Richard Henderson
2025-09-01 7:44 ` Philippe Mathieu-Daudé
2025-09-01 13:05 ` Igor Mammedov
2025-08-29 15:28 ` [PATCH 04/18] target-arm: remove uses of cpu_interrupt() for user-mode emulation Paolo Bonzini
2025-08-29 22:18 ` Richard Henderson
2025-08-29 15:31 ` [PATCH 05/18] user-exec: remove cpu_interrupt() stub Paolo Bonzini
2025-08-29 21:33 ` Richard Henderson
2025-09-01 11:22 ` Philippe Mathieu-Daudé
2025-08-29 15:31 ` [PATCH 06/18] treewide: clear bits of cs->interrupt_request with cpu_reset_interrupt() Paolo Bonzini
2025-08-29 21:34 ` Richard Henderson
2025-09-01 11:23 ` Philippe Mathieu-Daudé
2025-09-01 11:35 ` Philippe Mathieu-Daudé
2025-09-01 12:59 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 07/18] cpu-common: use atomic access for interrupt_request Paolo Bonzini
2025-08-29 21:38 ` Richard Henderson
2025-09-01 8:00 ` Philippe Mathieu-Daudé
2025-09-01 13:01 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 08/18] cpus: document that qemu_cpu_kick() can be used for BQL-less operation Paolo Bonzini
2025-08-29 21:39 ` Richard Henderson
2025-08-29 15:31 ` [PATCH 09/18] accel: use store_release/load_acquire for cross-thread exit_request Paolo Bonzini
2025-09-01 13:13 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 10/18] accel: use atomic accesses for exit_request Paolo Bonzini
2025-09-01 13:15 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 11/18] accel/tcg: create a thread-kick function for TCG Paolo Bonzini
2025-08-29 21:41 ` Richard Henderson
2025-09-01 8:03 ` Philippe Mathieu-Daudé
2025-09-01 13:19 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 12/18] accel/tcg: inline cpu_exit() Paolo Bonzini
2025-08-29 21:41 ` Richard Henderson
2025-09-01 13:21 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 13/18] cpus: remove TCG-ism from cpu_exit() Paolo Bonzini
2025-09-01 13:22 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 14/18] cpus: properly kick CPUs out of inner execution loop Paolo Bonzini
2025-08-29 21:56 ` Richard Henderson
2025-08-29 23:05 ` Paolo Bonzini
2025-08-30 3:04 ` Richard Henderson
2025-08-29 15:31 ` [PATCH 15/18] bsd-user, linux-user: introduce qemu_wait_io_event Paolo Bonzini
2025-08-29 22:11 ` Richard Henderson
2025-09-01 11:32 ` Philippe Mathieu-Daudé
2025-08-29 15:31 ` [PATCH 16/18] cpus: clear exit_request in qemu_wait_io_event Paolo Bonzini
2025-08-29 22:11 ` Richard Henderson
2025-08-29 22:19 ` Paolo Bonzini
2025-09-01 13:32 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 17/18] accel: make all calls to qemu_wait_io_event look the same Paolo Bonzini
2025-08-29 22:16 ` Richard Henderson [this message]
2025-09-01 11:29 ` Philippe Mathieu-Daudé
2025-09-01 11:31 ` Philippe Mathieu-Daudé
2025-09-01 13:32 ` Igor Mammedov
2025-08-29 15:31 ` [PATCH 18/18] tcg/user: do not set exit_request gratuitously Paolo Bonzini
2025-09-01 13:33 ` Igor Mammedov
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