linux-kernel - Re: [PATCH] KVM: arm64: nv: Set ISTATUS for emulated timers, If timer expired

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Message-ID: <86h661wje4.wl-maz@kernel.org>
Date: Tue, 14 Jan 2025 14:38:11 +0000
From: Marc Zyngier <maz@...nel.org>
To: Eric Auger <eauger@...hat.com>
Cc: Ganapatrao Kulkarni <gankulkarni@...amperecomputing.com>,
	kvmarm <kvmarm@...ts.linux.dev>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	oliver.upton@...ux.dev,
	christoffer.dall@....com,
	suzuki.poulose@....com,
	will@...nel.org,
	catalin.marinas@....com,
	coltonlewis@...gle.com,
	joey.gouly@....com,
	yuzenghui@...wei.com,
	darren@...amperecomputing.com,
	vishnu@...amperecomputing.com
Subject: Re: [PATCH] KVM: arm64: nv: Set ISTATUS for emulated timers, If timer expired

Hi Eric,

On Tue, 14 Jan 2025 13:12:21 +0000,
Eric Auger <eauger@...hat.com> wrote:
> 
> I also confirm that using a mailine edk2 fixed the issues I faced
> previously (fed/rhel L1 guest not booting).
> 
> I used Marc's nv-next branch and qemu rebase.

When did you sample this branch? It is almost daily rebased at the
moment, given that we keep piling up things in kvmarm/next.

> With a rhel L1 guest I can now boot buildroot, debian and rhel guest as
> L2 (feat mainline edk2). For rhel, I tested different kinds of page size
> combinations for L1/L2 (4k and 64kB) and it worked.
> 
> I tested on AmpereOne and Grace-Hopper systems

Thanks for the confirmation. I haven't had a chance to try QEMU yet,
but I expect that save/restore will not work. Something to look into,
I guess.

	M.

-- 
Without deviation from the norm, progress is not possible.