mbox series

[0/2] KVM: arm64: Simplify handling of GICv3 hardware with broken SEIS

Message ID 20241022144016.27350-1-will@kernel.org (mailing list archive)
Headers show
Series KVM: arm64: Simplify handling of GICv3 hardware with broken SEIS | expand

Message

Will Deacon Oct. 22, 2024, 2:40 p.m. UTC 
Hi folks,

While looking at reducing the host memory mapped into pKVM at EL2, I
noticed that the GICv3 CPU interface emulation for hardware with broken
SEIS implementations can be simplified and the corresponding mapping of
'kvm_vgic_global_state' can be dropped.

Please have a look!

Cheers,

Will

Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: kvmarm@lists.linux.dev

--->8

Will Deacon (2):
  KVM: arm64: Just advertise SEIS as 0 when emulating ICC_CTLR_EL1
  KVM: arm64: Don't map 'kvm_vgic_global_state' at EL2 with pKVM

 arch/arm64/kvm/hyp/nvhe/setup.c | 17 -----------------
 arch/arm64/kvm/hyp/vgic-v3-sr.c |  3 ---
 2 files changed, 20 deletions(-)

Comments

Oliver Upton Oct. 25, 2024, 10:16 p.m. UTC | #1 
On Tue, 22 Oct 2024 15:40:14 +0100, Will Deacon wrote:
> While looking at reducing the host memory mapped into pKVM at EL2, I
> noticed that the GICv3 CPU interface emulation for hardware with broken
> SEIS implementations can be simplified and the corresponding mapping of
> 'kvm_vgic_global_state' can be dropped.
> 
> Please have a look!
> 
> [...]

Included Marc's recommended changelog addition.

Applied to kvmarm/next, thanks!

[1/2] KVM: arm64: Just advertise SEIS as 0 when emulating ICC_CTLR_EL1
      https://git.kernel.org/kvmarm/kvmarm/c/ad361ed4771d
[2/2] KVM: arm64: Don't map 'kvm_vgic_global_state' at EL2 with pKVM
      https://git.kernel.org/kvmarm/kvmarm/c/8aaf3f7dce74

--
Best,
Oliver