From: "Alex Bennée" <alex.bennee@linaro.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>,
qemu-devel@nongnu.org, pbonzini@redhat.com, berrange@redhat.com,
eduardo@habkost.net, armbru@redhat.com, ajones@ventanamicro.com
Subject: Re: [RFC PATCH 00/40] Toward class init of cpu features
Date: Sat, 07 Jan 2023 10:19:12 +0000 [thread overview]
Message-ID: <87v8li1w67.fsf@linaro.org> (raw)
In-Reply-To: <7e695013-7261-50b5-a779-34640701eb6c@linaro.org>
Richard Henderson <richard.henderson@linaro.org> writes:
> On 1/6/23 15:43, Alex Bennée wrote:
>> What about cloning objects after they are realised? After all that is
>> what we do for the core CPUClass in user-mode.
>
> No we don't. Where do you get that idea?
Well linux-user does cpu_copy which involves a create step followed by a
reset and then a bunch of copying state across. Can we assume all CPUs
get reset before they are actively used?
Would it be too hacky to defer the creation of those hash tables to the
reset phase and skip it if already defined?
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
next prev parent reply other threads:[~2023-01-07 10:23 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-03 18:16 [RFC PATCH 00/40] Toward class init of cpu features Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 01/40] qdev: Don't always force the global property array non-null Richard Henderson
2023-01-05 21:56 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 02/40] qom: Introduce class_late_init Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 03/40] qom: Create class properties Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 04/40] target/arm: Remove aarch64_cpu_finalizefn Richard Henderson
2023-01-05 21:51 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 05/40] target/arm: Create arm_cpu_register_parent Richard Henderson
2023-01-05 21:57 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 06/40] target/arm: Remove AArch64CPUClass Richard Henderson
2023-01-05 21:50 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 07/40] target/arm: Create TYPE_ARM_V7M_CPU Richard Henderson
2023-01-05 21:58 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 08/40] target/arm: Pass ARMCPUClass to ARMCPUInfo.class_init Richard Henderson
2023-01-05 22:00 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 09/40] target/arm: Utilize arm-cpu instance_post_init hook Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 10/40] target/arm: Copy dtb_compatible from ARMCPUClass Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 11/40] target/arm: Copy features " Richard Henderson
2023-01-05 22:04 ` Philippe Mathieu-Daudé
2023-01-06 2:19 ` Richard Henderson
2023-01-06 7:14 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 12/40] target/arm: Copy isar and friends " Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 13/40] hw/arm/bcm2836: Set mp-affinity property in realize Richard Henderson
2023-01-05 21:48 ` Philippe Mathieu-Daudé
2023-01-06 7:51 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 14/40] target/arm: Rename arm_cpu_mp_affinity Richard Henderson
2023-01-05 21:55 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 15/40] target/arm: Create arm_cpu_mp_affinity Richard Henderson
2023-01-05 21:53 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 16/40] target/arm: Represent the entire MPIDR_EL1 Richard Henderson
2023-01-06 19:16 ` Peter Maydell
2023-01-06 19:33 ` Richard Henderson
2023-01-06 22:14 ` Peter Maydell
2023-01-06 22:36 ` Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 17/40] target/arm: Copy cp_regs from ARMCPUClass Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 18/40] target/arm: Create cpreg definition functions with GHashTable arg Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 19/40] target/arm: Move most cpu initialization to the class Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 20/40] target/arm: Merge kvm64.c with kvm.c Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 21/40] target/arm: Remove aarch64 check from aarch64_host_object_init Richard Henderson
2023-01-05 22:08 ` Philippe Mathieu-Daudé
2023-01-06 2:21 ` Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 22/40] target/arm: Hoist feature and dtb_compatible from KVM, HVF Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 23/40] target/arm: Probe KVM host into ARMCPUClass Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 24/40] target/arm/hvf: Probe " Richard Henderson
2023-01-05 22:10 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 25/40] target/arm/hvf: Use offsetof in hvf_arm_get_host_cpu_features Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 26/40] target/arm: Rename 'cpu' to 'acc' in class init functions Richard Henderson
2023-01-03 19:24 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 27/40] target/arm: Split out strongarm_class_init Richard Henderson
2023-01-05 22:12 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 28/40] target/arm: Split out xscale*_class_init Richard Henderson
2023-01-05 22:13 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 29/40] target/arm: Remove m-profile has_vfp and has_dsp properties Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 30/40] target/arm: Move feature bit propagation to class init Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 31/40] target/arm: Get and set class properties in the monitor Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 32/40] target/arm: Move "midr" to class property Richard Henderson
2023-01-05 22:18 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 33/40] target/arm: Move "cntfrq" " Richard Henderson
2023-01-05 22:21 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 34/40] target/arm: Move "reset-hivecs" " Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 35/40] target/arm: Move "has_el2" " Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 36/40] target/arm: Move "has_el3" " Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 37/40] target/arm: Move "cfgend" " Richard Henderson
2023-01-05 22:23 ` Philippe Mathieu-Daudé
2023-01-03 18:16 ` [RFC PATCH 38/40] target/arm: Move "vfp" and "neon" to class properties Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 39/40] target/arm: Move "has-mpu" and "pmsav7-dregion" " Richard Henderson
2023-01-03 18:16 ` [RFC PATCH 40/40] target/arm: Move "pmu" to class property Richard Henderson
2023-01-04 0:01 ` [RFC PATCH 00/40] Toward class init of cpu features Richard Henderson
2023-01-06 19:12 ` Peter Maydell
2023-01-06 19:29 ` Richard Henderson
2023-01-06 21:59 ` Peter Maydell
2023-01-06 22:28 ` Richard Henderson
2023-01-07 13:14 ` Peter Maydell
2023-01-06 23:43 ` Alex Bennée
2023-01-06 23:57 ` Richard Henderson
2023-01-07 10:19 ` Alex Bennée [this message]
2023-01-07 17:53 ` Richard Henderson
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