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From: Richard Henderson <richard.henderson@linaro.org>
To: "Philippe Mathieu-Daudé" <f4bug@amsat.org>, qemu-devel@nongnu.org
Subject: Re: [PATCH v8 13/40] accel/tcg: Implement AccelOpsClass::has_work()
Date: Sun, 26 Sep 2021 20:12:49 -0400	[thread overview]
Message-ID: <86834955-b2c7-5a94-eec0-47686eb40690@linaro.org> (raw)
In-Reply-To: <20210926222716.1732932-14-f4bug@amsat.org>

On 9/26/21 6:26 PM, Philippe Mathieu-Daudé wrote:
> All accelerators but TCG implement their AccelOpsClass::has_work()
> handler, meaning all the remaining CPUClass::has_work() ones are
> only reachable from TCG accelerator; and these has_work() handlers
> belong to TCGCPUOps.
> 
> We will gradually move each target CPUClass::has_work() to
> TCGCPUOps in the following commits.
> For now, move the CPUClass::has_work() call to tcg_cpu_has_work(),
> the TCG AccelOpsClass::has_work() implementation.
> 
> Signed-off-by: Philippe Mathieu-Daudé<f4bug@amsat.org>
> ---
>   include/hw/core/cpu.h     |  2 +-
>   accel/tcg/tcg-accel-ops.c | 11 +++++++++++
>   softmmu/cpus.c            |  5 -----
>   3 files changed, 12 insertions(+), 6 deletions(-)

Are we really really really sure this works?

Device emulation raises e.g. CPU_INTERRUPT_HARD.  We certainly test that bit in 
target/i386/kvm/kvm.c.  But we don't check that bit in your kvm_cpu_has_work.  We're 
currently checking that via cc->has_work(), in x86_cpu_pending_interrupt, but after this 
change we won't test it at all for kvm.


r~


  reply	other threads:[~2021-09-27  0:13 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-26 22:26 [PATCH v8 00/40] accel: Move has_work() from CPUClass to AccelOpsClass Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 01/40] accel: Simplify qemu_init_vcpu() Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 02/40] hw/core: Restrict cpu_has_work() to sysemu Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 03/40] hw/core: Un-inline cpu_has_work() Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 04/40] hw/core: Move cpu_common_has_work() to cpu_has_work() Philippe Mathieu-Daudé
2021-09-26 23:58   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 05/40] accel: Introduce AccelOpsClass::has_work() Philippe Mathieu-Daudé
2021-09-26 23:59   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 06/40] accel/kvm: Implement AccelOpsClass::has_work() Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 07/40] accel/whpx: " Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 08/40] accel/hvf: " Philippe Mathieu-Daudé
2021-09-27  0:00   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 09/40] accel/xen: " Philippe Mathieu-Daudé
2021-09-27  0:01   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 10/40] accel/hax: " Philippe Mathieu-Daudé
2021-09-27  0:01   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 11/40] accel/nvmm: " Philippe Mathieu-Daudé
2021-09-27  0:02   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 12/40] accel/qtest: " Philippe Mathieu-Daudé
2021-09-27  0:02   ` Richard Henderson
2021-09-26 22:26 ` [PATCH v8 13/40] accel/tcg: " Philippe Mathieu-Daudé
2021-09-27  0:12   ` Richard Henderson [this message]
2021-09-27  4:38     ` Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 14/40] accel: Simplify cpu_has_work() Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 15/40] accel/tcg: Introduce TCGCPUOps::has_work() Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 16/40] target/arm: Explicit v7M cores use arm_cpu_has_work as CPUClass:has_work Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 17/40] target/arm: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 18/40] target/alpha: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 19/40] target/avr: " Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 20/40] target/cris: " Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 21/40] target/hexagon: Remove unused has_work() handler Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 22/40] target/hppa: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:26 ` [PATCH v8 23/40] target/i386: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 24/40] target/m68k: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 25/40] target/microblaze: " Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 26/40] target/mips: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 27/40] target/nios2: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 28/40] target/openrisc: " Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 29/40] target/ppc: Introduce PowerPCCPUClass::has_work() Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 30/40] target/ppc: Restrict has_work() handlers to sysemu and TCG Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 31/40] target/riscv: Restrict has_work() handler " Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 32/40] target/rx: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 33/40] target/s390x: Restrict has_work() handler to sysemu and TCG Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 34/40] target/sh4: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 35/40] target/sparc: Remove pointless use of CONFIG_TCG definition Philippe Mathieu-Daudé
2021-09-29  7:06   ` Mark Cave-Ayland
2021-09-26 22:27 ` [PATCH v8 36/40] target/sparc: Restrict has_work() handler to sysemu Philippe Mathieu-Daudé
2021-09-29  7:07   ` Mark Cave-Ayland
2021-09-26 22:27 ` [PATCH v8 37/40] target/tricore: " Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 38/40] target/xtensa: " Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 39/40] accel/tcg: Remove CPUClass::has_work() Philippe Mathieu-Daudé
2021-09-26 22:27 ` [PATCH v8 40/40] accel/tcg: Simplify tcg_cpu_has_work() Philippe Mathieu-Daudé

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