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Message-ID: <YirvObKn0ADrEOk+@kroah.com>
Date: Fri, 11 Mar 2022 07:42:01 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Pavel Machek <pavel@...x.de>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>,
James Morse <james.morse@....com>
Subject: Re: [PATCH 5.10 38/58] KVM: arm64: Allow indirect vectors to be used
without SPECTRE_V3A
On Fri, Mar 11, 2022 at 12:48:59AM +0100, Pavel Machek wrote:
> Hi!
>
> What is going on here?
>
> > commit 5bdf3437603d4af87f9c7f424b0c8aeed2420745 upstream.
>
> Upstream commit 5bdf is very different from this. In particular,
>
> > arch/arm64/kvm/hyp/smccc_wa.S | 66 +++++++++++++++++++++++++++++++++++++++
>
> I can't find smccc_wa.S, neither in mainline, nor in -next. And it
> looks buggy. I suspect loop_k24 should loop 24 times, but it does 8
> loops AFAICT. Same problem with loop_k32.
The kvm portion of these patches is the "trickiest" portions. I'll let
James explain them, as he did so to me when sending the backports.
thanks,
greg k-h
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