[PATCH v2 00/20] KVM: arm64: Generalise RESx handling

[Marc Zyngier]

On Mon, 02 Feb 2026 18:43:09 +0000, Marc Zyngier wrote:
> Having spent some time dealing with some dark corners of the
> architecture, I have realised that our RESx handling is a bit patchy.
> Specially when it comes to RES1 bits, which are not clearly defined in
> config.c, and rely on band-aids such as FIXED_VALUE.
> 
> This series takes the excuse of adding SCTLR_EL2 sanitisation to bite
> the bullet and pursue several goals:
> 
> [...]

Applied to next, thanks!

[01/20] arm64: Convert SCTLR_EL2 to sysreg infrastructure
        commit: d43f2741ca535e12c8030741d517a790db6e187e
[02/20] KVM: arm64: Remove duplicate configuration for SCTLR_EL1.{EE,E0E}
        commit: 72ac893be5c0d57891948401c028600ad019e850
[03/20] KVM: arm64: Introduce standalone FGU computing primitive
        commit: 7b5359a603e96a5faafe12fca85726416ccf8f0d
[04/20] KVM: arm64: Introduce data structure tracking both RES0 and RES1 bits
        commit: bb006d5aeaf6e2860d380f02cdb8c5504906c77c
[05/20] KVM: arm64: Extend unified RESx handling to runtime sanitisation
        commit: 7e28686832b96196da8eac9373fd33b8067be095
[06/20] KVM: arm64: Inherit RESx bits from FGT register descriptors
        commit: 834538c146f7d902419c657cbc43c30eb51ff499
[07/20] KVM: arm64: Allow RES1 bits to be inferred from configuration
        commit: 459fc4e77e1ac932e47cb4a6d1a01b3be79fd41c
[08/20] KVM: arm64: Correctly handle SCTLR_EL1 RES1 bits for unsupported features
        commit: 8d4281d7fcad4d5724d368564510f30f23fcc454
[09/20] KVM: arm64: Convert HCR_EL2.RW to AS_RES1
        commit: c6c22eeb9ee94bee87db5f44f2ea7f4819cd5413
[10/20] KVM: arm64: Simplify FIXED_VALUE handling
        commit: 8d94458263bb2d44d8ba461327a1e18c05cfc453
[11/20] KVM: arm64: Add REQUIRES_E2H1 constraint as configuration flags
        commit: ad90512f12fef5506d1f72cdfbd720eb701eab8c
[12/20] KVM: arm64: Add RES1_WHEN_E2Hx constraints as configuration flags
        commit: d406fcb2030e3efe2c5a7f043028cb3727f522d8
[13/20] KVM: arm64: Move RESx into individual register descriptors
        commit: 4afc6f9ee5ed2fc0e76fe403dd0d60b638f252b2
[14/20] KVM: arm64: Simplify handling of HCR_EL2.E2H RESx
        commit: d764914990e086ffec042e81fd811aa8d731937c
[15/20] KVM: arm64: Get rid of FIXED_VALUE altogether
        commit: 791dfac623f9c0133ddbde66380126382e8799a3
[16/20] KVM: arm64: Simplify handling of full register invalid constraint
        commit: d5b907e197027352c8d02e15042c1c740e1e3b70
[17/20] KVM: arm64: Remove all traces of FEAT_TME
        commit: ca9a07fbebae715ebbfbe88e38d30c3f0a44e384
[18/20] KVM: arm64: Remove all traces of HCR_EL2.MIOCNCE
        commit: ab74a4ed036752c37aa2b9edac89bdb325f08acc
[19/20] KVM: arm64: Add sanitisation to SCTLR_EL2
        commit: d3a87aeadf8ec9f96a6afe9542a6aeeb1542df7a
[20/20] KVM: arm64: Add debugfs file dumping computed RESx values
        commit: 917fac520cbfc4dcdf10a427ca5b917445ceea68

Cheers,

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