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From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Santosh Shukla <sashukla@nvidia.com>,
	Gavin Shan <gshan@redhat.com>,
	kvm@vger.kernel.org, Quentin Perret <qperret@google.com>,
	kernel-team@android.com,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	kvmarm@lists.cs.columbia.edu,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	James Morse <james.morse@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	David Brazdil <dbrazdil@google.com>,
	Will Deacon <will@kernel.org>, Qais Yousef <qais.yousef@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: [PATCH 03/12] KVM: arm64: Drop useless PAN setting on host EL1 to EL2 transition
Date: Fri, 30 Oct 2020 16:40:08 +0000	[thread overview]
Message-ID: <20201030164017.244287-4-maz@kernel.org> (raw)
In-Reply-To: <20201030164017.244287-1-maz@kernel.org>

Setting PSTATE.PAN when entering EL2 on nVHE doesn't make much
sense as this bit only means something for translation regimes
that include EL0. This obviously isn't the case in the nVHE case,
so let's drop this setting.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Link: https://lore.kernel.org/r/20201026095116.72051-4-maz@kernel.org
---
 arch/arm64/kvm/hyp/nvhe/host.S | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/host.S b/arch/arm64/kvm/hyp/nvhe/host.S
index ff9a0f547b9f..ed27f06a31ba 100644
--- a/arch/arm64/kvm/hyp/nvhe/host.S
+++ b/arch/arm64/kvm/hyp/nvhe/host.S
@@ -17,8 +17,6 @@ SYM_FUNC_START(__host_exit)
 
 	get_host_ctxt	x0, x1
 
-	ALTERNATIVE(nop, SET_PSTATE_PAN(1), ARM64_HAS_PAN, CONFIG_ARM64_PAN)
-
 	/* Store the host regs x2 and x3 */
 	stp	x2, x3,   [x0, #CPU_XREG_OFFSET(2)]
 
-- 
2.28.0


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  parent reply	other threads:[~2020-10-30 16:42 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-30 16:40 [GIT PULL] KVM/arm64 fixes for 5.10, take #1 Marc Zyngier
2020-10-30 16:40 ` [PATCH 01/12] KVM: arm64: Don't corrupt tpidr_el2 on failed HVC call Marc Zyngier
2020-10-30 16:40 ` [PATCH 02/12] KVM: arm64: Remove leftover kern_hyp_va() in nVHE TLB invalidation Marc Zyngier
2020-10-30 16:40 ` Marc Zyngier [this message]
2020-10-30 16:40 ` [PATCH 04/12] KVM: arm64: Allocate stage-2 pgd pages with GFP_KERNEL_ACCOUNT Marc Zyngier
2020-10-30 16:40 ` [PATCH 05/12] KVM: arm64: Fix AArch32 handling of DBGD{CCINT, SCRext} and DBGVCR Marc Zyngier
2020-10-30 16:40 ` [PATCH 06/12] KVM: arm64: Fix masks in stage2_pte_cacheable() Marc Zyngier
2020-10-30 16:40 ` [PATCH 07/12] KVM: arm64: Use fallback mapping sizes for contiguous huge page sizes Marc Zyngier
2020-10-30 16:40 ` [PATCH 08/12] KVM: arm64: Force PTE mapping on fault resulting in a device mapping Marc Zyngier
2020-10-30 16:40 ` [PATCH 09/12] KVM: arm64: Factor out is_{vhe,nvhe}_hyp_code() Marc Zyngier
2020-10-30 16:40 ` [PATCH 10/12] arm64: cpufeature: reorder cpus_have_{const, final}_cap() Marc Zyngier
2020-10-30 16:40 ` [PATCH 11/12] arm64: cpufeature: upgrade hyp caps to final Marc Zyngier
2020-10-30 16:40 ` [PATCH 12/12] KVM: arm64: Handle Asymmetric AArch32 systems Marc Zyngier
2020-10-31 14:35 ` [GIT PULL] KVM/arm64 fixes for 5.10, take #1 Paolo Bonzini

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