From: Claudio Fontana <cfontana@suse.de>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
"Eduardo Habkost" <ehabkost@redhat.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
qemu-devel@nongnu.org, "Roman Bolshakov" <r.bolshakov@yadro.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: Re: [RFC v1 00/38] arm cleanup experiment for kvm-only build
Date: Wed, 3 Mar 2021 18:57:19 +0100 [thread overview]
Message-ID: <8d4a427a-94dd-7472-e8ae-98c4efa44ce0@suse.de> (raw)
In-Reply-To: <87a6rmkffo.fsf@linaro.org>
On 3/1/21 5:23 PM, Alex Bennée wrote:
>
> Claudio Fontana <cfontana@suse.de> writes:
>
>> On 2/23/21 10:18 AM, Philippe Mathieu-Daudé wrote:
>>> On 2/22/21 8:00 PM, Alex Bennée wrote:
>>>>
>>>> Claudio Fontana <cfontana@suse.de> writes:
>>>>
>>>>> Hi all,
>>>>>
>>>>> this is an experiment, a cleanup based on and requiring the series
>>>>> "i386 cleanup PART 2":
>>>>>
>>>>> https://lists.gnu.org/archive/html/qemu-devel/2021-02/msg05935.html
>>>>>
>>>>> The goal is to split the code between TCG-only and non-TCG code,
>>>>> fixing the KVM-only build (configure --disable-tcg),
>>>>>
>>>>> and laying the ground for further cleanups and the use of the
>>>>> new accel objects in the hierarchy to specialize the cpu
>>>>> according to the accelerator.
>>>>>
>>>>> This is known to be an early state, with probably a lot of work
>>>>> still needed.
>>>>
>>>> Well early work is looking pretty good:
>>>>
>>>> 18:59:22 [alex@idun:~/l/q/b/default] review/arm-cleanup-rfc1|… ± ls -lh qemu-system-aarch64
>>>> -rwxr-xr-x 1 alex alex 107M Feb 22 18:08 qemu-system-aarch64*
>>>> 18:59:29 [alex@idun:~/l/q/b/default] review/arm-cleanup-rfc1|… ± ls -lh ../disable.tcg/qemu-system-aarch64
>>>> -rwxr-xr-x 1 alex alex 76M Feb 22 17:47 ../disable.tcg/qemu-system-aarch64*
>>>
>>> :~)
>>>
>>>>
>>>> and I've tested the KVM side works well enough with a basic image.
>>>
>>>
>>
>> I am working on the next version, one thing I noticed among others as I get close to the v2,
>> is the fact that tests/ for arm require tcg in many cases.
>
> I think in a lot of cases they are historical because developers
> generally weren't running on native hardware. That said off the top of
> my head:
>
> tests/tcg - linux-user, so implies TCG
> tests/tcg/system - use semihosting (at least for arm/aarch64) - which implies TCG
> tests/acceptance/[replay_kernel/reverse_debugging/tcg_plugins] - all need TCG features
>
> I don't think there is any reason the others can't run with KVM - and
> probably should on real hardware.
One thing I noticed is that tests try to run qemu-system-aarch64 with accel "qtest" and machine "virt",
and the thing tries to create a cortex-a15 cpu model for some unknown reason.
Digging and sweating..
Ciao,
Claudio
>
>>
>> So there is even more cleanup needed to discern which are actually tcg-only, and how to tweak the others into working also with only kvm available..
>>
>> Ciao,
>>
>> Claudio
>
>
next prev parent reply other threads:[~2021-03-03 17:58 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210221092449.7545-1-cfontana@suse.de>
[not found] ` <20210221092449.7545-33-cfontana@suse.de>
2021-02-21 9:53 ` [RFC v1 32/38] target/arm: cpu: do not initialize TCG PMU for KVM Philippe Mathieu-Daudé
2021-02-21 13:59 ` Claudio Fontana
2021-02-22 6:11 ` Richard Henderson
[not found] ` <20210221092449.7545-35-cfontana@suse.de>
2021-02-21 9:55 ` [RFC v1 34/38] target/arm: cpu: only initialize TCG gt timers under CONFIG_TCG Philippe Mathieu-Daudé
2021-02-21 13:59 ` Claudio Fontana
2021-02-22 8:35 ` Claudio Fontana
2021-03-01 18:19 ` Olaf Hering
[not found] ` <87v9ak5cz0.fsf@linaro.org>
2021-02-23 9:12 ` Claudio Fontana
2021-02-23 11:01 ` Alex Bennée
2021-02-23 11:36 ` Claudio Fontana
2021-02-23 12:38 ` Claudio Fontana
2021-02-23 14:47 ` Paolo Bonzini
2021-02-22 5:35 ` [RFC v1 00/38] arm cleanup experiment for kvm-only build Richard Henderson
2021-02-22 8:43 ` Claudio Fontana
2021-02-22 11:56 ` Philippe Mathieu-Daudé
2021-02-22 16:08 ` Richard Henderson
2021-02-22 16:57 ` Alex Bennée
2021-02-23 9:17 ` Claudio Fontana
[not found] ` <20210221092449.7545-21-cfontana@suse.de>
2021-02-22 5:48 ` [RFC v1 20/38] target/arm: move arm_hcr_el2_eff to common_cpu Richard Henderson
[not found] ` <20210221092449.7545-24-cfontana@suse.de>
2021-02-22 5:52 ` [RFC v1 23/38] target/arm: move arm_mmu_idx_el to common-cpu Richard Henderson
[not found] ` <20210221092449.7545-25-cfontana@suse.de>
2021-02-22 6:02 ` [RFC v1 24/38] target/arm: move aa64_va_parameter_tbi,tbid,tcma and arm_rebuild_hflags Richard Henderson
2021-02-23 10:07 ` Claudio Fontana
2021-02-23 16:30 ` Richard Henderson
[not found] ` <20210221092449.7545-26-cfontana@suse.de>
2021-02-22 6:04 ` [RFC v1 25/38] target/arm: move fp_exception_el outside of tcg helpers Richard Henderson
[not found] ` <20210221092449.7545-27-cfontana@suse.de>
2021-02-22 6:05 ` [RFC v1 26/38] target/arm: move sve_exception_el to cpu Richard Henderson
[not found] ` <20210221092449.7545-28-cfontana@suse.de>
2021-02-22 6:06 ` [RFC v1 27/38] target/arm: move sve_zcr_len_for_el to common_cpu Richard Henderson
2021-02-25 17:28 ` Claudio Fontana
2021-02-25 20:13 ` Claudio Fontana
2021-02-26 4:01 ` Richard Henderson
[not found] ` <20210221092449.7545-29-cfontana@suse.de>
2021-02-22 6:09 ` [RFC v1 28/38] target/arm: make arm_pmu_timer_cb TCG-only, starting tcg-stub Richard Henderson
[not found] ` <20210221092449.7545-2-cfontana@suse.de>
2021-02-22 6:14 ` [RFC v1 01/38] target/arm: move translate modules to tcg/ Richard Henderson
[not found] ` <20210221092449.7545-4-cfontana@suse.de>
2021-02-22 6:16 ` [RFC v1 03/38] arm: tcg: only build under CONFIG_TCG Richard Henderson
[not found] ` <20210221092449.7545-6-cfontana@suse.de>
2021-02-22 6:21 ` [RFC v1 05/38] target/arm: wrap arm_cpu_exec_interrupt in CONFIG_TCG Richard Henderson
2021-02-22 8:31 ` Claudio Fontana
2021-02-22 15:54 ` Richard Henderson
2021-02-23 8:46 ` Claudio Fontana
[not found] ` <20210221092449.7545-9-cfontana@suse.de>
2021-02-22 6:29 ` [RFC v1 08/38] target/arm/tcg: split softmmu parts of v8_cp_reginfo and el2_cp_reginfo Richard Henderson
[not found] ` <20210221092449.7545-3-cfontana@suse.de>
2021-02-22 6:16 ` [RFC v1 02/38] target/arm: move helpers to tcg/ Richard Henderson
2021-02-22 17:20 ` Philippe Mathieu-Daudé
[not found] ` <20210221092449.7545-5-cfontana@suse.de>
[not found] ` <87eeh857xf.fsf@linaro.org>
2021-02-23 8:44 ` [RFC v1 04/38] target/arm: move psci.c into tcg/softmmu/ Claudio Fontana
[not found] ` <20210221092449.7545-7-cfontana@suse.de>
[not found] ` <87blcc57rj.fsf@linaro.org>
2021-02-23 8:55 ` [RFC v1 06/38] target/arm: split off cpu-softmmu.c Claudio Fontana
2021-02-23 9:16 ` Philippe Mathieu-Daudé
2021-02-23 9:35 ` Claudio Fontana
2021-02-23 18:18 ` softmmu vs sysemu [Was: Re: [RFC v1 06/38] target/arm: split off cpu-softmmu.c] Claudio Fontana
2021-02-23 18:51 ` Richard Henderson
2021-02-23 23:43 ` Philippe Mathieu-Daudé
2021-02-24 0:06 ` Richard Henderson
2021-02-24 9:20 ` Paolo Bonzini
2021-02-24 9:30 ` Claudio Fontana
2021-02-24 10:00 ` Paolo Bonzini
[not found] ` <875z2k53mn.fsf@linaro.org>
2021-02-23 9:18 ` [RFC v1 00/38] arm cleanup experiment for kvm-only build Philippe Mathieu-Daudé
2021-03-01 11:52 ` Claudio Fontana
2021-03-01 16:23 ` Alex Bennée
2021-03-03 17:57 ` Claudio Fontana [this message]
2021-03-03 18:09 ` Peter Maydell
2021-03-03 18:17 ` Claudio Fontana
2021-03-03 18:20 ` Claudio Fontana
2021-03-03 18:30 ` Philippe Mathieu-Daudé
2021-03-03 18:39 ` Richard Henderson
2021-03-03 18:45 ` Claudio Fontana
2021-03-03 18:54 ` Richard Henderson
2021-03-04 16:39 ` Philippe Mathieu-Daudé
2021-03-04 17:19 ` Claudio Fontana
2021-03-04 17:47 ` Philippe Mathieu-Daudé
2021-03-04 19:24 ` Peter Maydell
2021-03-05 9:04 ` Claudio Fontana
2021-03-03 18:34 ` Philippe Mathieu-Daudé
2021-03-03 18:38 ` Claudio Fontana
2021-02-23 9:18 ` Claudio Fontana
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