linux-kernel - Re: [PATCH v2] KVM: x86/xen: ignore the VCPU_SSHOTTMR

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Message-ID: <ZR2vTN618U0UgtIA@google.com>
Date:   Wed, 4 Oct 2023 11:30:36 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paul Durrant <paul@....org>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Durrant <pdurrant@...zon.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        David Woodhouse <dwmw2@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Subject: Re: [PATCH v2] KVM: x86/xen: ignore the VCPU_SSHOTTMR_future flag

On Wed, Oct 04, 2023, Paul Durrant wrote:
> From: Paul Durrant <pdurrant@...zon.com>
> 
> Upstream Xen now ignores this flag [1], since the only guest kernel ever to
> use it was buggy. By ignoring the flag the guest will always get a callback
> if it sets a negative timeout which upstream Xen has determined not to
> cause problems for any guest setting the flag.
> 
> [1] https://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=19c6cbd909
> 
> Signed-off-by: Paul Durrant <pdurrant@...zon.com>
> Reviewed-by: David Woodhouse <dwmw@...zon.co.uk>
> ---
> Cc: David Woodhouse <dwmw2@...radead.org>
> Cc: Sean Christopherson <seanjc@...gle.com>
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: x86@...nel.org

If you're going to manually Cc folks, put the Cc's in the changelog proper so that
there's a record of who was Cc'd on the patch.

Or even better, just use scripts/get_maintainers.pl and only manually Cc people
when necessary.