linux-kernel - [PATCH 0/2] KVM: arm64: Control visibility of S1PIE related sysregs to userspace

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Message-Id: <20240821-kvm-arm64-hide-pie-regs-v1-0-08cb3c79cb57@kernel.org>
Date: Wed, 21 Aug 2024 14:07:14 +0100
From: Mark Brown <broonie@...nel.org>
To: Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>, 
 James Morse <james.morse@....com>, 
 Suzuki K Poulose <suzuki.poulose@....com>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
 Joey Gouly <joey.gouly@....com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>
Subject: [PATCH 0/2] KVM: arm64: Control visibility of S1PIE related
 sysregs to userspace

While looking at the KVM system register code I noticed that we do not
have visibility operations for TCR2 or the S1PIE registers, I may be
missing some reason why they are not required but in case I'm not I
figured the most direct way to ask was to propose adding the operations.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
Mark Brown (2):
      KVM: arm64: Hide TCR2_EL1 from userspace when disabled for guests
      KVM: arm64: Hide S1PIE registers from userspace when disabled for guests

 arch/arm64/include/asm/kvm_host.h |  6 ++++++
 arch/arm64/kvm/sys_regs.c         | 31 ++++++++++++++++++++++++++-----
 2 files changed, 32 insertions(+), 5 deletions(-)
---
base-commit: 6e4436539ae182dc86d57d13849862bcafaa4709
change-id: 20240820-kvm-arm64-hide-pie-regs-2236f70703ab

Best regards,
-- 
Mark Brown <broonie@...nel.org>