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From: Christoffer Dall <christoffer.dall@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: Re: [PATCH 0/3] arm64: KVM: Kiss hyp_alternate_select() goodbye
Date: Mon, 2 Sep 2019 10:00:55 +0200	[thread overview]
Message-ID: <20190902080055.GA4320@e113682-lin.lund.arm.com> (raw)
In-Reply-To: <20190901211237.11673-1-maz@kernel.org>

On Sun, Sep 01, 2019 at 10:12:34PM +0100, Marc Zyngier wrote:
> hyp_alternate_select() is a leftover from the my second attempt at
> supporting VHE (the first one was never merged, thankfully), and is
> now an irrelevant relic. It was a way to patch function pointers
> without having to dereference memory, a bit like static keys for
> function calls.
> 
> Lovely idea, but since Christoffer mostly separated the VHE and !VHE
> hypervisor paths, most of the uses of hyp_alternate_select() are
> gone. What is left is two instances that are better replaced by
> already existing static keys. One of the instances becomes
> cpus_have_const_cap(), and the rest is a light sprinkling of
> has_vhe().
> 
> So off it goes.

I'm not sure I want to kiss hyp_alternate_select() at all, but away it
must go!

Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
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  parent reply	other threads:[~2019-09-02  8:01 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-01 21:12 [PATCH 0/3] arm64: KVM: Kiss hyp_alternate_select() goodbye Marc Zyngier
2019-09-01 21:12 ` [PATCH 1/3] arm64: KVM: Drop hyp_alternate_select for checking for ARM64_WORKAROUND_834220 Marc Zyngier
2019-09-01 21:12 ` [PATCH 2/3] arm64: KVM: Replace hyp_alternate_select with has_vhe() Marc Zyngier
2019-09-01 21:12 ` [PATCH 3/3] arm64: KVM: Kill hyp_alternate_select() Marc Zyngier
2019-09-02  8:00 ` Christoffer Dall [this message]
2019-09-02  8:34 ` [PATCH 0/3] arm64: KVM: Kiss hyp_alternate_select() goodbye Andrew Jones

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