From: James Morse <james.morse@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
kernel-team@android.com
Subject: Re: [PATCH 0/8] KVM: arm64: Kill the copro array
Date: Tue, 3 Nov 2020 18:29:25 +0000 [thread overview]
Message-ID: <d1d98b83-7d58-1ab4-f429-0f297071c34a@arm.com> (raw)
In-Reply-To: <20201102191609.265711-1-maz@kernel.org>
Hi Marc,
On 02/11/2020 19:16, Marc Zyngier wrote:
> Since the very beginning of KVM/arm64, we represented the system
> register file using a dual view: on one side the AArch64 state, on the
> other a bizarre mapping of the AArch64 state onto the Aarch64
> registers.
Now that would be bizarre!
mapping of the AArch32 state onto the Aarch64 registers?
> It was nice at the time as it allowed us to share some code with the
> 32bit port, and to come up with some creative bugs. But is was always
> a hack, and we are now in a position to simplify the whole thing.
>
> This series goes through the whole of the AArch32 cp14/15 register
> file, and point each of them directly at their 64bit equivalent. For
> the few cases where two 32bit registers share a 64bit counterpart, we
> define which half of the register they map.
Thanks,
James
prev parent reply other threads:[~2020-11-03 18:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 19:16 [PATCH 0/8] KVM: arm64: Kill the copro array Marc Zyngier
2020-11-02 19:16 ` [PATCH 1/8] KVM: arm64: Move AArch32 exceptions over to AArch64 sysregs Marc Zyngier
2020-11-03 18:29 ` James Morse
2020-11-10 10:01 ` Marc Zyngier
2020-11-02 19:16 ` [PATCH 2/8] KVM: arm64: Add AArch32 mapping annotation Marc Zyngier
2020-11-02 19:16 ` [PATCH 3/8] KVM: arm64: Map AArch32 cp15 register to AArch64 sysregs Marc Zyngier
2020-11-03 18:29 ` James Morse
2020-11-10 10:14 ` Marc Zyngier
2020-11-02 19:16 ` [PATCH 4/8] KVM: arm64: Map AArch32 cp14 " Marc Zyngier
2020-11-03 18:29 ` James Morse
2020-11-10 10:27 ` Marc Zyngier
2020-11-02 19:16 ` [PATCH 5/8] KVM: arm64: Drop is_32bit trap attribute Marc Zyngier
2020-11-02 19:16 ` [PATCH 6/8] KVM: arm64: Drop is_aarch32 " Marc Zyngier
2020-11-02 19:16 ` [PATCH 7/8] KVM: arm64: Drop legacy copro shadow register Marc Zyngier
2020-11-02 19:16 ` [PATCH 8/8] KVM: arm64: Drop kvm_coproc.h Marc Zyngier
2020-11-03 18:29 ` James Morse [this message]
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