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[2003:fa:af0b:b200:4c1b:a182:4932:b7f6]) by smtp.gmail.com with ESMTPSA id ay6-20020a05600c1e0600b003db00747fdesm5786477wmb.15.2023.01.26.13.26.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Jan 2023 13:27:00 -0800 (PST) Date: Thu, 26 Jan 2023 21:26:53 +0000 From: Bernhard Beschow To: quintela@redhat.com, Juan Quintela , kvm-devel , qemu-devel@nongnu.org Subject: Re: Fortnightly KVM call minutes for 2023-01-24 In-Reply-To: <87zga8f0c0.fsf@secure.mitica> References: <87zga8f0c0.fsf@secure.mitica> Message-ID: <09D128C9-6633-4315-B312-827C875C20DB@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Am 24=2E Januar 2023 14:56:15 UTC schrieb Juan Quintela : > > > > >First part stolen from: https://etherpad=2Eopendev=2Eorg/p/qemu-emulation= -bof%402023-01-24 > thanks Phillippe > >Single QEMU-system binary and Dynamic Machine Models > >Meeting link: https://meet=2Ejit=2Esi/kvmcallmeeting >Just want to dial in on your phone? Dial-in: +1=2E512=2E647=2E1431 PIN: 1= 518845548# >Click this link to see the dial in phone numbers for this meeting https:/= /meet=2Ejit=2Esi/static/dialInInfo=2Ehtml?room=3Dkvmcallmeeting > >What needs to be done? > > TCG > > How to use different page sizes > > -> convert to page-vary (already used by ARM/MIPS) > > ref: https://lore=2Ekernel=2Eorg/qemu-devel/20221228171617=2E059750c3= @orange/ > > > HW models / machine > > > How to create/realize 2 QOM objects which depend on each other? > > what (properties) need to be wired? IRQ, reset lines, MR? > > > Sysbus: Demote it to plain qdev? > > con: > > sysbus helpful to remove qdev boilerplace/verbose code > > sysbus tree does the resets [currently blocking qdev conversion] > > pro: > > sysbus IRQ API > > too abstract, not very helpful, "named gpios" API is clearer > > sysbus MMIO API > > also kinda abstract, MRs indexed=2E No qdev equivalent > > sysbus IO API: > > not very used=2E first we need to get rid of ISA bus singleton I've just submitted v2 of my patch series removing the ISA bus singleton: = https://lore=2Ekernel=2Eorg/qemu-devel/20230126211740=2E66874-1-shentey@gma= il=2Ecom Best regards, Bernhard > > > Single 32/64 *targets* binary > > Which 32-bit hosts are still used? OK to deprecate them? > > Some targets need special care i=2Ee=2E KVM 32-bit ARM vCPU on 64-bit= Aarch64 host > > >Previous notes: > https://etherpad=2Eopendev=2Eorg/p/qemu-emulation-bof%402022-12-13 > https://etherpad=2Eopendev=2Eorg/p/qemu-emulation-bof%402022-11-29 > > >Do we care about this? > >64 bits guests on 32 bits hosts: OK to deprecate >32 bits hosts: still in (some) use > >Creating and realizing two objects than need to be linked together=2E > >We can't do it with realize, perhaps we need an intermediate state to >do the link, and then realize=2E > >Can we get Peter or Markus or Paolo for the next call? >waiting to get some patches into the list for discussing=2E > >Problem for Phillipe is that he has to do changes to the API's and >want to be sure that they are agreed before he changes all >devices/targets, a multi month task=2E > >For removing sysbus, we need to wait for reset rework from Peter? > >Expose the memory API to external processes=2E > >Under what circumstances you should be able to create/destroy a memory >region? > > > >Later, Juan=2E > >