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From: Fabiano Rosas <farosas@suse.de>
To: Claudio Fontana <cfontana@suse.de>, qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org, "Peter Maydell" <peter.maydell@linaro.org>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Eduardo Habkost" <ehabkost@redhat.com>,
	"Alexander Graf" <agraf@csgraf.de>,
	"Thomas Huth" <thuth@redhat.com>,
	"Laurent Vivier" <lvivier@redhat.com>
Subject: Re: [RFC PATCH v3 20/28] target/arm: Set cortex-a57 as default cpu for KVM-only build
Date: Fri, 13 Jan 2023 13:22:16 -0300	[thread overview]
Message-ID: <875ydaievb.fsf@suse.de> (raw)
In-Reply-To: <3be55a1c-64cd-28f3-9c7f-ceb67b20c36e@suse.de>

Claudio Fontana <cfontana@suse.de> writes:

> On 1/13/23 15:04, Fabiano Rosas wrote:
>> The cortex-a15 is not present anymore when CONFIG_TCG=n, so use the
>> cortex-a57 as default cpu for KVM.
>> 
>> Signed-off-by: Fabiano Rosas <farosas@suse.de>
>
> Our recommendation currently for KVM on ARM is to always use CPU="host", as named cpu models generally don't work (yet?) with KVM.
>
> https://qemu-project.gitlab.io/qemu/system/arm/cpu-features.html
>
> Should then "host" be the default for KVM if CONFIG_TCG=N or CONFIG_TCG=M and the TCG .so is not loaded?

Yes, "host" seems to make more sense. I was under the impression that
there was a way to use cortex-a57 and cortex-a53 since they have
cpu->kvm_target set.

  reply	other threads:[~2023-01-13 16:22 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13 14:03 [RFC PATCH v3 00/28] target/arm: Allow CONFIG_TCG=n builds Fabiano Rosas
2023-01-13 14:03 ` [RFC PATCH v3 01/28] target/arm: rename handle_semihosting to tcg_handle_semihosting Fabiano Rosas
2023-01-13 14:03 ` [RFC PATCH v3 02/28] target/arm: wrap psci call with tcg_enabled Fabiano Rosas
2023-01-13 14:03 ` [RFC PATCH v3 03/28] target/arm: wrap call to aarch64_sve_change_el in tcg_enabled() Fabiano Rosas
2023-01-13 14:03 ` [RFC PATCH v3 04/28] target/arm: Move PC alignment check Fabiano Rosas
2023-01-17 16:11   ` Philippe Mathieu-Daudé
2023-01-13 14:03 ` [RFC PATCH v3 05/28] target/arm: Move cpregs code out of cpu.h Fabiano Rosas
2023-01-13 21:48   ` Richard Henderson
2023-01-17 16:12   ` Philippe Mathieu-Daudé
2023-01-13 14:03 ` [RFC PATCH v3 06/28] target/arm: Move cpregs code into cpregs.c Fabiano Rosas
2023-01-17 16:16   ` Philippe Mathieu-Daudé
2023-01-13 14:03 ` [RFC PATCH v3 07/28] target/arm: Move define_debug_regs() to cpregs.c Fabiano Rosas
2023-01-13 14:03 ` [RFC PATCH v3 08/28] target/arm: Wrap breakpoint/watchpoint updates with tcg_enabled Fabiano Rosas
2023-01-13 21:53   ` Richard Henderson
2023-01-13 14:04 ` [RFC PATCH v3 09/28] target/arm: move translate modules to tcg/ Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 10/28] target/arm: move helpers " Fabiano Rosas
2023-01-17 16:22   ` Philippe Mathieu-Daudé
2023-01-17 18:55     ` Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 11/28] target/arm: Move psci.c into the tcg directory Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 12/28] target/arm: Wrap arm_rebuild_hflags calls with tcg_enabled Fabiano Rosas
2023-01-13 21:56   ` Richard Henderson
2023-01-17 16:27   ` Philippe Mathieu-Daudé
2023-01-17 19:00     ` Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 13/28] target/arm: Move hflags code into the tcg directory Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 14/28] target/arm: Move regime_using_lpae_format into internal.h Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 15/28] target/arm: Don't access TCG code when debugging with KVM Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 16/28] cpu-defs.h: Expose CPUTLBEntryFull to non-TCG code Fabiano Rosas
2023-01-17 16:29   ` Philippe Mathieu-Daudé
2023-01-13 14:04 ` [RFC PATCH v3 17/28] target/arm: Move cortex sysregs into cpregs.c Fabiano Rosas
2023-01-13 21:58   ` Richard Henderson
2023-01-13 14:04 ` [RFC PATCH v3 18/28] target/arm: Move common cpu code into cpu.c Fabiano Rosas
2023-01-13 22:01   ` Richard Henderson
2023-01-18 12:46     ` Fabiano Rosas
2023-01-17 16:36   ` Philippe Mathieu-Daudé
2023-01-17 19:01     ` Fabiano Rosas
2023-01-18 10:45       ` Philippe Mathieu-Daudé
2023-01-18 11:33         ` Claudio Fontana
2023-01-18 12:10           ` Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 19/28] target/arm: move cpu_tcg to tcg/cpu32.c Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 20/28] target/arm: Set cortex-a57 as default cpu for KVM-only build Fabiano Rosas
2023-01-13 14:33   ` Claudio Fontana
2023-01-13 16:22     ` Fabiano Rosas [this message]
2023-01-13 22:06       ` Richard Henderson
2023-01-13 22:05   ` Richard Henderson
2023-01-16 13:45     ` Fabiano Rosas
2023-01-16 13:50       ` Peter Maydell
2023-01-16 14:08         ` Fabiano Rosas
2023-01-16 13:49     ` Peter Maydell
2023-01-13 14:04 ` [RFC PATCH v3 21/28] tests/qtest: Skip tests that depend on TCG when CONFIG_TCG=n Fabiano Rosas
2023-01-13 14:22   ` Thomas Huth
2023-01-13 15:16     ` Fabiano Rosas
2023-01-13 22:09   ` Richard Henderson
2023-01-16 13:48     ` Fabiano Rosas
2023-01-17 14:32   ` Cornelia Huck
2023-01-17 19:04     ` Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 22/28] tests/qtest: Restrict bcm2835-dma-test to CONFIG_RASPI Fabiano Rosas
2023-01-13 14:23   ` Thomas Huth
2023-01-13 22:10   ` Richard Henderson
2023-01-16  8:39   ` Philippe Mathieu-Daudé
2023-01-13 14:04 ` [RFC PATCH v3 23/28] tests/tcg: Do not build/run TCG tests if TCG is disabled Fabiano Rosas
2023-01-13 14:27   ` Thomas Huth
2023-01-13 14:04 ` [RFC PATCH v3 24/28] tests/avocado: Skip tests that require a missing accelerator Fabiano Rosas
2023-01-13 22:14   ` Richard Henderson
2023-01-13 14:04 ` [RFC PATCH v3 25/28] tests/avocado: Tag TCG tests with accel:tcg Fabiano Rosas
2023-01-13 22:14   ` Richard Henderson
2023-01-13 14:04 ` [RFC PATCH v3 26/28] target/avocado: Pass parameters to migration test on aarch64 Fabiano Rosas
2023-01-13 14:04 ` [RFC PATCH v3 27/28] arm/Kconfig: Always select SEMIHOSTING when TCG is present Fabiano Rosas
2023-01-13 22:39   ` Richard Henderson
2023-01-13 14:04 ` [RFC PATCH v3 28/28] arm/Kconfig: Do not build TCG-only boards on a KVM-only build Fabiano Rosas
2023-01-13 22:42   ` Richard Henderson
2023-01-18 10:47 ` [RFC PATCH v3 00/28] target/arm: Allow CONFIG_TCG=n builds Philippe Mathieu-Daudé

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