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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=jbuJPoipTiUQP7/k+Rmr0WaOAzGMug15ye46jUuJg14=; b=i8ouG4RWjFJQ3QbzWXsaP7VWtzoo2B/NptImcYHLLUR5GCydF21FMTNOLhDJaXmIzU GRjmaS5/gVXTdj4rh/D6gPodf+RSPyGMdT2CTMIee9fTwx/ZqokOnsoQbfocaJgA+d/S vHo+zHapmmNLtCK/viBYPMusMReRNfB5FCzsu2pnWDtGcDuGXhdy44gN/0hwGlEYypbi m+VQ7SOri/CePbGFn8GlbXNLRwH+ijVwkDprrS7oqBvmtW2f91/ab79JlAd0nPJV03UU R2K6sBdUe9iyYkIvGrQWLINNyhxZqkM6WvjbK3/bUJyVP/nCv4NWtkncmoTNW1GwZkVF VH/g== X-Gm-Message-State: AOAM531XcfvjDml3Anh6hAU+HTHVp2+lFJJcsklL6EVipOmYzA+QPKbg SN24CquUvt/gvp02NHnwbL4= X-Google-Smtp-Source: ABdhPJy6z0KlgYp43GQ3JrzHVxWydzuScJzBi8/BWK4j4Vo3Ykq1/E2PN90O07tlS4m4zUWV47DW9w== X-Received: by 2002:ac2:5d51:: with SMTP id w17mr8032713lfd.343.1612187247589; Mon, 01 Feb 2021 05:47:27 -0800 (PST) Subject: Re: [PATCH v8 00/16] acquire_resource size and external IPT monitoring To: Andrew Cooper Cc: Xen-devel , Jan Beulich , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Wei Liu , Ian Jackson , Anthony PERARD , Jun Nakajima , Kevin Tian , =?UTF-8?Q?Micha=c5=82_Leszczy=c5=84ski?= , Tamas K Lengyel References: <20210130025852.12430-1-andrew.cooper3@citrix.com> <911270bf-0077-b70e-c224-712dfa535afa@gmail.com> From: Oleksandr Message-ID: Date: Mon, 1 Feb 2021 15:47:21 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US On 01.02.21 15:07, Andrew Cooper wrote: Hi Andrew > On 01/02/2021 12:34, Oleksandr wrote: >> On 30.01.21 04:58, Andrew Cooper wrote: >> >> Hi Andrew >> >>> Combined series (as they are dependent).  First, the resource size >>> fixes, and >>> then the external IPT monitoring built on top. >>> >>> Posting in full for reference, but several patches are ready to go >>> in.  Those >>> in need of review are patch 6, 8 and 12. >>> >>> See individual patches for changes.  The major work was rebasing over >>> the >>> ARM/IOREQ series which moved a load of code which this series was >>> bugfixing. >> Looks like that some of these patches have been already merged. So I >> preliminary tested current staging >> (9dc687f155a57216b83b17f9cde55dd43e06b0cd x86/debug: fix page-overflow >> bug in dbg_rw_guest_mem) on Arm *with* IOREQ enabled. >> >> I didn't notice any regressions with IOREQ on Arm)) > Fantastic! > > Tamas and I did do extended testing on the subset which got committed, > before it went in, and it is all fixing of corner cases, rather than > fundamentally changing how things worked. > > > One query I did leave on IRC, and hasn't had an answer. > > What is the maximum number of vcpus in an ARM guest? public/arch-arm.h says that current supported guest VCPUs max number is 128. > You moved an > x86-ism "max 128 vcpus" into common code. Ooh, I am not sure I understand where exactly. Could you please clarify in which patch? > > ~Andrew -- Regards, Oleksandr Tyshchenko