linux-kernel - Re: [PATCH v8 0/6] KVM: arm64: Hypervisor stack enhancements

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Message-ID: <CAC_TJve+n8gXbG_XY_rb+DC7399SSmP6BRc5x7X=cvht50XLYA@mail.gmail.com>
Date:   Mon, 2 May 2022 09:54:45 -0700
From:   Kalesh Singh <kaleshsingh@...gle.com>
To:     Marc Zyngier <maz@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>
Cc:     Mark Rutland <mark.rutland@....com>,
        James Morse <james.morse@....com>,
        Fuad Tabba <tabba@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        kvmarm <kvmarm@...ts.cs.columbia.edu>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
        <linux-arm-kernel@...ts.infradead.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Will Deacon <will@...nel.org>,
        Quentin Perret <qperret@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Changbin Du <changbin.du@...el.com>,
        "Cc: Android Kernel" <kernel-team@...roid.com>,
        Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH v8 0/6] KVM: arm64: Hypervisor stack enhancements

On Thu, Apr 28, 2022 at 12:55 PM Marc Zyngier <maz@...nel.org> wrote:
>
> On Wed, 20 Apr 2022 14:42:51 -0700, Kalesh Singh wrote:
> > This is v8 of the nVHE hypervisor stack enhancements. This version is based
> > on 5.18-rc3.
> >
> > Previous versions can be found at:
> > v7: https://lore.kernel.org/r/20220408200349.1529080-1-kaleshsingh@google.com/
> > v6: https://lore.kernel.org/r/20220314200148.2695206-1-kaleshsingh@google.com/
> > v5: https://lore.kernel.org/r/20220307184935.1704614-1-kaleshsingh@google.com/
> > v4: https://lore.kernel.org/r/20220225033548.1912117-1-kaleshsingh@google.com/
> > v3: https://lore.kernel.org/r/20220224051439.640768-1-kaleshsingh@google.com/
> > v2: https://lore.kernel.org/r/20220222165212.2005066-1-kaleshsingh@google.com/
> > v1: https://lore.kernel.org/r/20220210224220.4076151-1-kaleshsingh@google.com/
> >
> > [...]
>
> Applied to next, thanks!
>
> [1/6] KVM: arm64: Introduce hyp_alloc_private_va_range()
>       commit: 92abe0f81e1385afd8f1dc66206b5be9a514899b
> [2/6] KVM: arm64: Introduce pkvm_alloc_private_va_range()
>       commit: f922c13e778d6d5343d4576be785a8204c595113
> [3/6] KVM: arm64: Add guard pages for KVM nVHE hypervisor stack
>       commit: ce3354318a57875dc59f4bb841662e95bfba03db
> [4/6] KVM: arm64: Add guard pages for pKVM (protected nVHE) hypervisor stack
>       commit: 1a919b17ef012ca0572bae759c27e5ea02bfb47f
> [5/6] KVM: arm64: Detect and handle hypervisor stack overflows
>       commit: 66de19fad9ef47c5376a99bb2b00661f1c788a94
> [6/6] KVM: arm64: Symbolize the nVHE HYP addresses
>       commit: 6ccf9cb557bd32073b0d68baed97f1bd8a40ff1d

Thanks for applying these Marc.

I was wondering if instead of taking these through kvm-arm64/next,
could Catalin consolidated these in arm64 for-next/core with Mark
Ruthland's and Madhavan's stacktrace patches[1]? This avoids conflict
and would allow for the hypervisor unwinding changes[2] to apply
cleanly.

[1] https://lore.kernel.org/r/20220413145910.3060139-1-mark.rutland@arm.com/
[2]  https://lore.kernel.org/r/20220427184716.1949239-1-kaleshsingh@google.com/

Thanks,
Kalesh
>
> Cheers,
>
>         M.
> --
> Without deviation from the norm, progress is not possible.
>
>