linux-kernel - Re: [PATCH 1/5] kvm: add exit_to_guest_mode() and enter_from_guest

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Date:   Tue, 18 Jan 2022 13:01:42 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     linux-kernel@...r.kernel.org, aleksandar.qemu.devel@...il.com,
        alexandru.elisei@....com, anup.patel@....com,
        aou@...s.berkeley.edu, atish.patra@....com,
        benh@...nel.crashing.org, borntraeger@...ux.ibm.com, bp@...en8.de,
        catalin.marinas@....com, chenhuacai@...nel.org,
        dave.hansen@...ux.intel.com, david@...hat.com,
        frankja@...ux.ibm.com, frederic@...nel.org, gor@...ux.ibm.com,
        hca@...ux.ibm.com, imbrenda@...ux.ibm.com, james.morse@....com,
        jmattson@...gle.com, joro@...tes.org, kvm@...r.kernel.org,
        maz@...nel.org, mingo@...hat.com, mpe@...erman.id.au,
        nsaenzju@...hat.com, palmer@...belt.com, paulmck@...nel.org,
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        tsbogend@...ha.franken.de, vkuznets@...hat.com,
        wanpengli@...cent.com, will@...nel.org
Subject: Re: [PATCH 1/5] kvm: add exit_to_guest_mode() and
 enter_from_guest_mode()

On Fri, Jan 14, 2022 at 04:11:06PM +0000, Sean Christopherson wrote:
> On Fri, Jan 14, 2022, Mark Rutland wrote:
> > I'd like to keep this somewhat orthogonal to the x86 changes (e.g. as other
> > architectures will need backports to stable at least for the RCU bug fix), so
> > I'd rather use a name that isn't immediately coupled with x86 changes.
> 
> Ah, gotcha.
>  
> > Does the guest_context_{enter,exit}_irqoff() naming above work for you?
> 
> Yep, thanks!

I just realised that I already have guest_context_{enter,exit}_irqoff()
for the context-tracking bits alone, and so I'll need to use a different
name. For bisectability I can't use guest_{enter,exit}_irqoff()
immediately, so for now I'll go with guest_state_{enter,exit}_irqoff().

Once the conversion is complete and the deprecated bits are removed we
can rename those to guest_{enter,exit}_irqoff().

Thanks,
Mark.