From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>,
Ard Biesheuvel <ardb@kernel.org>,
James Morse <james.morse@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: Re: [PATCH v4 00/10] arm64: Add support for FEAT_E2H0, or lack thereof
Date: Thu, 8 Feb 2024 15:24:40 +0000 [thread overview]
Message-ID: <170740573023.1221433.14646653483482850488.b4-ty@linux.dev> (raw)
In-Reply-To: <20240122181344.258974-1-maz@kernel.org>
On Mon, 22 Jan 2024 18:13:34 +0000, Marc Zyngier wrote:
> Since ARMv8.1, the architecture has grown the VHE feature, which makes
> EL2 a superset of EL1. With ARMv9.5 (and retroactively allowed from
> ARMv8.1), the architecture allows implementations to have VHE as the
> *only* implemented behaviour, meaning that HCR_EL2.E2H can be
> implemented as RES1. As a follow-up, HCR_EL2.NV1 can also be
> implemented as RES0, making the VHE-ness of the architecture
> recursive.
>
> [...]
Thanks folks for having taken a look at the series. I've pushed it out
to kvmarm/next.
Catalin, as requested here is the shared branch:
https://git.kernel.org/pub/scm/linux/kernel/git/oupton/linux.git/log/?h=kvm-arm64/feat_e2h0
[01/10] arm64: Add macro to compose a sysreg field value
https://git.kernel.org/kvmarm/kvmarm/c/53eaeb7fbe27
[02/10] arm64: cpufeatures: Correctly handle signed values
https://git.kernel.org/kvmarm/kvmarm/c/d9a065914dcc
[03/10] arm64: cpufeature: Correctly display signed override values
https://git.kernel.org/kvmarm/kvmarm/c/d42bf63fd4db
[04/10] arm64: sysreg: Add layout for ID_AA64MMFR4_EL1
https://git.kernel.org/kvmarm/kvmarm/c/cfc680bb04c5
[05/10] arm64: cpufeature: Add ID_AA64MMFR4_EL1 handling
https://git.kernel.org/kvmarm/kvmarm/c/805bb61f8279
[06/10] arm64: cpufeature: Detect HCR_EL2.NV1 being RES0
https://git.kernel.org/kvmarm/kvmarm/c/da9af5071b25
[07/10] arm64: Treat HCR_EL2.E2H as RES1 when ID_AA64MMFR4_EL1.E2H0 is negative
https://git.kernel.org/kvmarm/kvmarm/c/3944382fa6f2
[08/10] KVM: arm64: Expose ID_AA64MMFR4_EL1 to guests
https://git.kernel.org/kvmarm/kvmarm/c/c21df6e43f0e
[09/10] KVM: arm64: Force guest's HCR_EL2.E2H RES1 when NV1 is not implemented
https://git.kernel.org/kvmarm/kvmarm/c/94f29ab2d801
[10/10] KVM: arm64: Handle Apple M2 as not having HCR_EL2.NV1 implemented
https://git.kernel.org/kvmarm/kvmarm/c/aade38faca63
--
Best,
Oliver
prev parent reply other threads:[~2024-02-08 15:25 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-22 18:13 [PATCH v4 00/10] arm64: Add support for FEAT_E2H0, or lack thereof Marc Zyngier
2024-01-22 18:13 ` [PATCH v4 01/10] arm64: Add macro to compose a sysreg field value Marc Zyngier
2024-02-08 11:40 ` Catalin Marinas
2024-01-22 18:13 ` [PATCH v4 02/10] arm64: cpufeatures: Correctly handle signed values Marc Zyngier
2024-02-08 12:13 ` Catalin Marinas
2024-01-22 18:13 ` [PATCH v4 03/10] arm64: cpufeature: Correctly display signed override values Marc Zyngier
2024-02-08 12:14 ` Catalin Marinas
2024-01-22 18:13 ` [PATCH v4 04/10] arm64: sysreg: Add layout for ID_AA64MMFR4_EL1 Marc Zyngier
2024-02-08 12:25 ` Catalin Marinas
2024-02-08 13:06 ` Miguel Luis
2024-02-08 13:15 ` Marc Zyngier
2024-01-22 18:13 ` [PATCH v4 05/10] arm64: cpufeature: Add ID_AA64MMFR4_EL1 handling Marc Zyngier
2024-02-08 12:25 ` Catalin Marinas
2024-01-22 18:13 ` [PATCH v4 06/10] arm64: cpufeature: Detect HCR_EL2.NV1 being RES0 Marc Zyngier
2024-02-08 12:26 ` Catalin Marinas
2024-02-08 12:27 ` Catalin Marinas
2024-02-12 12:48 ` Marek Szyprowski
2024-02-12 14:00 ` Marc Zyngier
2024-02-12 14:21 ` Marek Szyprowski
2024-01-22 18:13 ` [PATCH v4 07/10] arm64: Treat HCR_EL2.E2H as RES1 when ID_AA64MMFR4_EL1.E2H0 is negative Marc Zyngier
2024-02-08 12:27 ` Catalin Marinas
2024-01-22 18:13 ` [PATCH v4 08/10] KVM: arm64: Expose ID_AA64MMFR4_EL1 to guests Marc Zyngier
2024-01-22 18:13 ` [PATCH v4 09/10] KVM: arm64: Force guest's HCR_EL2.E2H RES1 when NV1 is not implemented Marc Zyngier
2024-01-22 18:13 ` [PATCH v4 10/10] KVM: arm64: Handle Apple M2 as not having HCR_EL2.NV1 implemented Marc Zyngier
2024-02-08 12:29 ` Catalin Marinas
2024-02-02 19:03 ` [PATCH v4 00/10] arm64: Add support for FEAT_E2H0, or lack thereof Oliver Upton
2024-02-08 12:30 ` Catalin Marinas
2024-02-08 15:24 ` Oliver Upton [this message]
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