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Re: [PATCH v2 00/13] perf: KVM: Fix, optimize, and clean up callbacks
- To: Marc Zyngier <maz@xxxxxxxxxx>
- From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
- Date: Mon, 20 Sep 2021 15:18:30 +0200
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- Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Nick Hu <nickhu@xxxxxxxxxxxxx>, Greentime Hu <green.hu@xxxxxxxxx>, Vincent Chen <deanbo422@xxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, x86@xxxxxxxxxx, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, James Morse <james.morse@xxxxxxx>, Alexandru Elisei <alexandru.elisei@xxxxxxx>, Suzuki K Poulose <suzuki.poulose@xxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Wanpeng Li <wanpengli@xxxxxxxxxxx>, Jim Mattson <jmattson@xxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, linux-perf-users@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, kvmarm@xxxxxxxxxxxxxxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, Artem Kashkanov <artem.kashkanov@xxxxxxxxx>, Like Xu <like.xu.linux@xxxxxxxxx>, Zhu Lingshan <lingshan.zhu@xxxxxxxxx>
- Delivery-date: Mon, 20 Sep 2021 13:18:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20/09/21 14:22, Marc Zyngier wrote:
I think that's only ARM, and even then it is only because of
limitations of the hardware which mostly apply only if VHE is not in
use.
If anything, it's ARM that should support module build in VHE mode
(Linux would still need to know whether it will be running at EL1 or
EL2, but KVM's functionality is as self-contained as on x86 in the VHE
case).
I don't see this happening anytime soon. At least not before we
declare the arm64 single kernel image policy to be obsolete.
--verbose please. :) I am sure you're right, but I don't understand the
link between the two.
Paolo
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