From: Richard Henderson <richard.henderson@linaro.org>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>, qemu-devel@nongnu.org
Cc: David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [PATCH v4 01/30] accel/tcg: Restrict cpu_handle_halt() to sysemu
Date: Sun, 12 Sep 2021 11:34:18 -0700 [thread overview]
Message-ID: <f880cc11-f738-c1ce-cf3a-fbff36cf69f2@linaro.org> (raw)
In-Reply-To: <20210912172731.789788-2-f4bug@amsat.org>
On 9/12/21 10:27 AM, Philippe Mathieu-Daudé wrote:
> Commit 372579427a5 ("tcg: enable thread-per-vCPU") added the following
> comment describing EXCP_HALTED in qemu_tcg_cpu_thread_fn():
>
> case EXCP_HALTED:
> /* during start-up the vCPU is reset and the thread is
> * kicked several times. If we don't ensure we go back
> * to sleep in the halted state we won't cleanly
> * start-up when the vCPU is enabled.
> *
> * cpu->halted should ensure we sleep in wait_io_event
> */
> g_assert(cpu->halted);
> break;
>
> qemu_wait_io_event() is sysemu-specific, so we can restrict the
> cpu_handle_halt() call in cpu_exec() to system emulation.
>
> Signed-off-by: Philippe Mathieu-Daudé<f4bug@amsat.org>
> ---
> v4: Reduce ifdef'ry to cpu_handle_halt (rth)
> ---
> accel/tcg/cpu-exec.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2021-09-12 18:36 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-12 17:27 [PATCH v4 00/30] accel: Move has_work() from SysemuCPUOps to AccelOpsClass Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 01/30] accel/tcg: Restrict cpu_handle_halt() to sysemu Philippe Mathieu-Daudé
2021-09-12 18:34 ` Richard Henderson [this message]
2021-09-12 17:27 ` [PATCH v4 02/30] hw/core: Restrict cpu_has_work() " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 03/30] hw/core: Un-inline cpu_has_work() Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 04/30] sysemu: Introduce AccelOpsClass::has_work() Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 05/30] accel/kvm: Implement AccelOpsClass::has_work() Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 06/30] accel/whpx: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 07/30] accel/tcg: Implement AccelOpsClass::has_work() as stub Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 08/30] target/alpha: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 09/30] target/arm: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 10/30] target/avr: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 11/30] target/cris: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 12/30] target/hexagon: Remove unused has_work() handler Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 13/30] target/hppa: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 14/30] target/i386: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 15/30] target/m68k: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 16/30] target/microblaze: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 17/30] target/mips: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 18/30] target/nios2: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 19/30] target/openrisc: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 20/30] target/ppc: Introduce PowerPCCPUClass::has_work() Philippe Mathieu-Daudé
2021-09-12 18:46 ` Richard Henderson
2021-09-12 17:27 ` [PATCH v4 21/30] target/ppc: Restrict has_work() handlers to sysemu and TCG Philippe Mathieu-Daudé
2021-09-12 18:49 ` Richard Henderson
2021-09-12 17:27 ` [PATCH v4 22/30] target/riscv: Restrict has_work() handler " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 23/30] target/rx: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 24/30] target/s390x: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 25/30] target/sh4: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 26/30] target/sparc: Remove pointless use of CONFIG_TCG definition Philippe Mathieu-Daudé
2021-09-12 18:36 ` Richard Henderson
2021-09-12 17:27 ` [PATCH v4 27/30] target/sparc: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 28/30] target/tricore: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 29/30] target/xtensa: " Philippe Mathieu-Daudé
2021-09-12 17:27 ` [PATCH v4 30/30] accel: Add missing AccelOpsClass::has_work() and drop SysemuCPUOps one Philippe Mathieu-Daudé
2021-09-15 18:06 ` [PATCH v4 00/30] accel: Move has_work() from SysemuCPUOps to AccelOpsClass Richard Henderson
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