From: David Brazdil <dbrazdil@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
kernel-team@android.com, Marc Zyngier <maz@kernel.org>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Tejun Heo <tj@kernel.org>, Dennis Zhou <dennis@kernel.org>,
Christoph Lameter <cl@linux.com>, Will Deacon <will@kernel.org>
Subject: [RFC PATCH 05/26] kvm: arm64: Initialize MAIR_EL2 using a constant
Date: Wed, 4 Nov 2020 18:36:09 +0000 [thread overview]
Message-ID: <20201104183630.27513-6-dbrazdil@google.com> (raw)
In-Reply-To: <20201104183630.27513-1-dbrazdil@google.com>
MAIR_EL2 is currently initialized to the value of MAIR_EL1, which itself
is set to a constant MAIR_EL1_SET.
Initialize MAIR_EL2 to the MAIR_EL1_SET constant directly in preparation
of allowing KVM to start CPU cores itself and not initializing itself
before ERETing to EL1. In that case, MAIR_EL2 will be initialized before
MAIR_EL1.
Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index b11a9d7db677..96e70f976ff5 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -111,7 +111,7 @@ alternative_else_nop_endif
msr tcr_el2, x0
- mrs x0, mair_el1
+ mov_q x0, MAIR_EL1_SET
msr mair_el2, x0
isb
--
2.29.1.341.ge80a0c044ae-goog
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: David Brazdil <dbrazdil@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
kernel-team@android.com,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Marc Zyngier <maz@kernel.org>,
Quentin Perret <qperret@google.com>,
linux-kernel@vger.kernel.org, James Morse <james.morse@arm.com>,
linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Tejun Heo <tj@kernel.org>, Dennis Zhou <dennis@kernel.org>,
Christoph Lameter <cl@linux.com>,
David Brazdil <dbrazdil@google.com>,
Will Deacon <will@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Andrew Scull <ascull@google.com>
Subject: [RFC PATCH 05/26] kvm: arm64: Initialize MAIR_EL2 using a constant
Date: Wed, 4 Nov 2020 18:36:09 +0000 [thread overview]
Message-ID: <20201104183630.27513-6-dbrazdil@google.com> (raw)
In-Reply-To: <20201104183630.27513-1-dbrazdil@google.com>
MAIR_EL2 is currently initialized to the value of MAIR_EL1, which itself
is set to a constant MAIR_EL1_SET.
Initialize MAIR_EL2 to the MAIR_EL1_SET constant directly in preparation
of allowing KVM to start CPU cores itself and not initializing itself
before ERETing to EL1. In that case, MAIR_EL2 will be initialized before
MAIR_EL1.
Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index b11a9d7db677..96e70f976ff5 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -111,7 +111,7 @@ alternative_else_nop_endif
msr tcr_el2, x0
- mrs x0, mair_el1
+ mov_q x0, MAIR_EL1_SET
msr mair_el2, x0
isb
--
2.29.1.341.ge80a0c044ae-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: David Brazdil <dbrazdil@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Dennis Zhou <dennis@kernel.org>,
Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Quentin Perret <qperret@google.com>,
Andrew Scull <ascull@google.com>,
kernel-team@android.com, David Brazdil <dbrazdil@google.com>
Subject: [RFC PATCH 05/26] kvm: arm64: Initialize MAIR_EL2 using a constant
Date: Wed, 4 Nov 2020 18:36:09 +0000 [thread overview]
Message-ID: <20201104183630.27513-6-dbrazdil@google.com> (raw)
In-Reply-To: <20201104183630.27513-1-dbrazdil@google.com>
MAIR_EL2 is currently initialized to the value of MAIR_EL1, which itself
is set to a constant MAIR_EL1_SET.
Initialize MAIR_EL2 to the MAIR_EL1_SET constant directly in preparation
of allowing KVM to start CPU cores itself and not initializing itself
before ERETing to EL1. In that case, MAIR_EL2 will be initialized before
MAIR_EL1.
Signed-off-by: David Brazdil <dbrazdil@google.com>
---
arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index b11a9d7db677..96e70f976ff5 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -111,7 +111,7 @@ alternative_else_nop_endif
msr tcr_el2, x0
- mrs x0, mair_el1
+ mov_q x0, MAIR_EL1_SET
msr mair_el2, x0
isb
--
2.29.1.341.ge80a0c044ae-goog
next prev parent reply other threads:[~2020-11-04 18:36 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-04 18:36 [RFC PATCH 00/26] kvm: arm64: Always-on nVHE hypervisor David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 01/26] psci: Export configured PSCI version David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-05 9:47 ` Marc Zyngier
2020-11-05 9:47 ` Marc Zyngier
2020-11-05 9:47 ` Marc Zyngier
2020-11-04 18:36 ` [RFC PATCH 02/26] psci: Export configured PSCI function IDs David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-05 9:53 ` Marc Zyngier
2020-11-05 9:53 ` Marc Zyngier
2020-11-05 9:53 ` Marc Zyngier
2020-11-04 18:36 ` [RFC PATCH 03/26] psci: Export psci_cpu_suspend_feature David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 04/26] arm64: Move MAIR_EL1_SET to asm/memory.h David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil [this message]
2020-11-04 18:36 ` [RFC PATCH 05/26] kvm: arm64: Initialize MAIR_EL2 using a constant David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 06/26] kvm: arm64: Add .hyp.data ELF section David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 07/26] kvm: arm64: Support per_cpu_ptr in nVHE hyp code David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 08/26] kvm: arm64: Create nVHE copy of cpu_logical_map David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 09/26] kvm: arm64: Move hyp-init params to a per-CPU struct David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 10/26] kvm: arm64: Refactor handle_trap to use a switch David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 11/26] kvm: arm64: Extract parts of el2_setup into a macro David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 12/26] kvm: arm64: Add SMC handler in nVHE EL2 David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-05 11:08 ` Marc Zyngier
2020-11-05 11:08 ` Marc Zyngier
2020-11-05 11:08 ` Marc Zyngier
2020-11-04 18:36 ` [RFC PATCH 13/26] kvm: arm64: Bootstrap PSCI " David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 14/26] kvm: arm64: Forward safe PSCI SMCs coming from host David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 15/26] arm64: kvm: Add standalone ticket spinlock implementation for use at hyp David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 16/26] kvm: arm64: Add offset for hyp VA <-> PA conversion David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 17/26] kvm: arm64: Bootstrap PSCI power state of host CPUs David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 18/26] kvm: arm64: Intercept PSCI_CPU_OFF host SMC calls David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-05 11:30 ` Marc Zyngier
2020-11-05 11:30 ` Marc Zyngier
2020-11-05 11:30 ` Marc Zyngier
2020-11-05 11:42 ` David Brazdil
2020-11-05 11:42 ` David Brazdil
2020-11-05 11:42 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 19/26] kvm: arm64: Extract __do_hyp_init into a helper function David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 20/26] kvm: arm64: Add CPU entry point in nVHE hyp David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 21/26] kvm: arm64: Add function to enter host from KVM nVHE hyp code David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 22/26] kvm: arm64: Intercept PSCI_CPU_ON host SMC calls David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 23/26] kvm: arm64: Intercept host's CPU_SUSPEND PSCI SMCs David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-05 10:34 ` Andrew Walbran
2020-11-05 10:34 ` Andrew Walbran
2020-11-05 10:34 ` Andrew Walbran
2020-11-05 11:04 ` David Brazdil
2020-11-05 11:04 ` David Brazdil
2020-11-05 11:04 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 24/26] kvm: arm64: Keep nVHE EL2 vector installed David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 25/26] kvm: arm64: Trap host SMCs David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` [RFC PATCH 26/26] kvm: arm64: Fix EL2 mode availability checks David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-04 18:36 ` David Brazdil
2020-11-06 12:25 ` [RFC PATCH 00/26] kvm: arm64: Always-on nVHE hypervisor Marc Zyngier
2020-11-06 12:25 ` Marc Zyngier
2020-11-06 12:25 ` Marc Zyngier
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