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Date: Fri, 20 Nov 2020 13:01:54 +0100 From: Peter Zijlstra <peterz@...radead.org> To: Juergen Gross <jgross@...e.com> Cc: xen-devel@...ts.xenproject.org, x86@...nel.org, linux-kernel@...r.kernel.org, linux-hyperv@...r.kernel.org, virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org, luto@...nel.org, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>, "K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Stephen Hemminger <sthemmin@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Deep Shah <sdeep@...are.com>, "VMware, Inc." <pv-drivers@...are.com>, Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <sean.j.christopherson@...el.com>, Vitaly Kuznetsov <vkuznets@...hat.com>, Wanpeng Li <wanpengli@...cent.com>, Jim Mattson <jmattson@...gle.com>, Joerg Roedel <joro@...tes.org>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Stefano Stabellini <sstabellini@...nel.org>, Daniel Lezcano <daniel.lezcano@...aro.org>, Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, Daniel Bristot de Oliveira <bristot@...hat.com> Subject: Re: [PATCH v2 06/12] x86/paravirt: switch time pvops functions to use static_call() On Fri, Nov 20, 2020 at 12:46:24PM +0100, Juergen Gross wrote: > The time pvops functions are the only ones left which might be > used in 32-bit mode and which return a 64-bit value. > > Switch them to use the static_call() mechanism instead of pvops, as > this allows quite some simplification of the pvops implementation. > > Due to include hell this requires to split out the time interfaces > into a new header file. There's also this patch floating around; just in case that would come in handy: https://lkml.kernel.org/r/20201110005609.40989-3-frederic@kernel.org
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