From: Marc Zyngier <maz@kernel.org>
To: Mark Brown <broonie@kernel.org>
Cc: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org, Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>,
Alexandru Elisei <alexandru.elisei@arm.com>
Subject: Re: [PATCH v5 27/37] arm64: Add encoding for POR_EL2
Date: Wed, 23 Oct 2024 17:28:36 +0100 [thread overview]
Message-ID: <861q064wcr.wl-maz@kernel.org> (raw)
In-Reply-To: <bef5f236-8bec-44af-bb44-a1c60184ad31@sirena.org.uk>
On Wed, 23 Oct 2024 17:13:47 +0100,
Mark Brown <broonie@kernel.org> wrote:
>
> [1 <text/plain; us-ascii (7bit)>]
> On Wed, Oct 23, 2024 at 03:53:35PM +0100, Marc Zyngier wrote:
> > POR_EL2 is the equivalent of POR_EL1 for the EL2&0 translation
> > regime, and it is sorely missing from the sysreg file.
>
> > +Sysreg POR_EL2 3 4 10 2 4
> > +Fields PIRx_ELx
> > +EndSysreg
>
> We should probably rename the Fields here, though there'd be an awful
> lot of xs in that name.
If you're in a renaming mood, please start with the TCR2_EL1x
brain-damage. Having a way to map an EL12 *accessor* onto the actual
register should come at zero cost to the namespace, and the tooling
should be augmented to support the way the architecture works.
M.
--
Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2024-10-23 16:28 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-23 14:53 [PATCH v5 00/37] KVM: arm64: Add EL2 support to FEAT_S1PIE/S1POE Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 01/37] arm64: Drop SKL0/SKL1 from TCR2_EL2 Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 02/37] arm64: Remove VNCR definition for PIRE0_EL2 Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 03/37] arm64: Add encoding " Marc Zyngier
2024-10-23 16:11 ` Mark Brown
2024-10-23 14:53 ` [PATCH v5 04/37] KVM: arm64: Drop useless struct s2_mmu in __kvm_at_s1e2() Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 05/37] KVM: arm64: nv: Add missing EL2->EL1 mappings in get_el2_to_el1_mapping() Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 06/37] KVM: arm64: nv: Handle CNTHCTL_EL2 specially Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 07/37] KVM: arm64: nv: Save/Restore vEL2 sysregs Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 08/37] KVM: arm64: Correctly access TCR2_EL1, PIR_EL1, PIRE0_EL1 with VHE Marc Zyngier
2024-10-24 10:03 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 09/37] KVM: arm64: Extend masking facility to arbitrary registers Marc Zyngier
2024-10-24 10:38 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 10/37] arm64: Define ID_AA64MMFR1_EL1.HAFDBS advertising FEAT_HAFT Marc Zyngier
2024-10-23 16:09 ` Mark Brown
2024-10-23 14:53 ` [PATCH v5 11/37] KVM: arm64: Add TCR2_EL2 to the sysreg arrays Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 12/37] KVM: arm64: Sanitise TCR2_EL2 Marc Zyngier
2024-10-24 10:21 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 13/37] KVM: arm64: Add save/restore for TCR2_EL2 Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 14/37] KVM: arm64: Add PIR{,E0}_EL2 to the sysreg arrays Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 15/37] KVM: arm64: Add save/restore for PIR{,E0}_EL2 Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 16/37] KVM: arm64: Handle PIR{,E0}_EL2 traps Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 17/37] KVM: arm64: Sanitise ID_AA64MMFR3_EL1 Marc Zyngier
2024-10-24 12:32 ` Mark Brown
2024-10-24 12:45 ` Joey Gouly
2024-10-24 12:55 ` Mark Brown
2024-10-23 14:53 ` [PATCH v5 18/37] KVM: arm64: Add AT fast-path support for S1PIE Marc Zyngier
2024-10-24 14:49 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 19/37] KVM: arm64: Split S1 permission evaluation into direct and hierarchical parts Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 20/37] KVM: arm64: Disable hierarchical permissions when S1PIE is enabled Marc Zyngier
2024-10-24 14:02 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 21/37] KVM: arm64: Implement AT S1PIE support Marc Zyngier
2024-10-24 13:59 ` Joey Gouly
2024-10-24 14:21 ` Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 22/37] KVM: arm64: Add a composite EL2 visibility helper Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 23/37] KVM: arm64: Define helper for EL2 registers with custom visibility Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 24/37] KVM: arm64: Hide TCR2_EL1 from userspace when disabled for guests Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 25/37] KVM: arm64: Hide S1PIE registers " Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 26/37] KVM: arm64: Rely on visibility to let PIR*_ELx/TCR2_ELx UNDEF Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 27/37] arm64: Add encoding for POR_EL2 Marc Zyngier
2024-10-23 16:13 ` Mark Brown
2024-10-23 16:28 ` Marc Zyngier [this message]
2024-10-23 14:53 ` [PATCH v5 28/37] KVM: arm64: Drop bogus CPTR_EL2.E0POE trap routing Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 29/37] KVM: arm64: Subject S1PIE/S1POE registers to HCR_EL2.{TVM,TRVM} Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 30/37] KVM: arm64: Add kvm_has_s1poe() helper Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 31/37] KVM: arm64: Add basic support for POR_EL2 Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 32/37] KVM: arm64: Add save/restore " Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 33/37] KVM: arm64: Add POE save/restore for AT emulation fast-path Marc Zyngier
2024-10-24 15:26 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 34/37] KVM: arm64: Disable hierarchical permissions when POE is enabled Marc Zyngier
2024-10-24 15:36 ` Joey Gouly
2024-10-23 14:53 ` [PATCH v5 35/37] KVM: arm64: Make PAN conditions part of the S1 walk context Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 36/37] KVM: arm64: Handle stage-1 permission overlays Marc Zyngier
2024-10-23 14:53 ` [PATCH v5 37/37] KVM: arm64: Handle WXN attribute Marc Zyngier
2024-10-31 3:04 ` [PATCH v5 00/37] KVM: arm64: Add EL2 support to FEAT_S1PIE/S1POE Oliver Upton
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