From: Quentin Perret <qperret@google.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>,
Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev,
kvmarm@lists.cs.columbia.edu, kernel-team@android.com,
Quentin Perret <qperret@google.com>
Subject: [PATCH 1/4] KVM: arm64: Provide sanitized SYS_ID_AA64SMFR0_EL1 to nVHE
Date: Wed, 1 Feb 2023 10:37:51 +0000 [thread overview]
Message-ID: <20230201103755.1398086-2-qperret@google.com> (raw)
In-Reply-To: <20230201103755.1398086-1-qperret@google.com>
We will need a sanitized copy of SYS_ID_AA64SMFR0_EL1 from the nVHE EL2
code shortly, so make sure to provide it with a copy.
Signed-off-by: Quentin Perret <qperret@google.com>
---
arch/arm64/include/asm/kvm_hyp.h | 1 +
arch/arm64/kvm/arm.c | 1 +
arch/arm64/kvm/hyp/nvhe/sys_regs.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h
index 6797eafe7890..bdd9cf546d95 100644
--- a/arch/arm64/include/asm/kvm_hyp.h
+++ b/arch/arm64/include/asm/kvm_hyp.h
@@ -122,6 +122,7 @@ extern u64 kvm_nvhe_sym(id_aa64isar2_el1_sys_val);
extern u64 kvm_nvhe_sym(id_aa64mmfr0_el1_sys_val);
extern u64 kvm_nvhe_sym(id_aa64mmfr1_el1_sys_val);
extern u64 kvm_nvhe_sym(id_aa64mmfr2_el1_sys_val);
+extern u64 kvm_nvhe_sym(id_aa64smfr0_el1_sys_val);
extern unsigned long kvm_nvhe_sym(__icache_flags);
extern unsigned int kvm_nvhe_sym(kvm_arm_vmid_bits);
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 9c5573bc4614..d9c6ec650b42 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -1887,6 +1887,7 @@ static void kvm_hyp_init_symbols(void)
kvm_nvhe_sym(id_aa64mmfr0_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
kvm_nvhe_sym(id_aa64mmfr1_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR1_EL1);
kvm_nvhe_sym(id_aa64mmfr2_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64MMFR2_EL1);
+ kvm_nvhe_sym(id_aa64smfr0_el1_sys_val) = read_sanitised_ftr_reg(SYS_ID_AA64SMFR0_EL1);
kvm_nvhe_sym(__icache_flags) = __icache_flags;
kvm_nvhe_sym(kvm_arm_vmid_bits) = kvm_arm_vmid_bits;
}
diff --git a/arch/arm64/kvm/hyp/nvhe/sys_regs.c b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
index 0f9ac25afdf4..08d2b004f4b7 100644
--- a/arch/arm64/kvm/hyp/nvhe/sys_regs.c
+++ b/arch/arm64/kvm/hyp/nvhe/sys_regs.c
@@ -26,6 +26,7 @@ u64 id_aa64isar2_el1_sys_val;
u64 id_aa64mmfr0_el1_sys_val;
u64 id_aa64mmfr1_el1_sys_val;
u64 id_aa64mmfr2_el1_sys_val;
+u64 id_aa64smfr0_el1_sys_val;
/*
* Inject an unknown/undefined exception to an AArch64 guest while most of its
--
2.39.1.456.gfc5497dd1b-goog
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next prev parent reply other threads:[~2023-02-01 10:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-01 10:37 [PATCH 0/4] KVM: arm64: Fix CPU resume/on with pKVM Quentin Perret
2023-02-01 10:37 ` Quentin Perret [this message]
2023-02-01 14:15 ` [PATCH 1/4] KVM: arm64: Provide sanitized SYS_ID_AA64SMFR0_EL1 to nVHE Mark Brown
2023-02-01 10:37 ` [PATCH 2/4] KVM: arm64: Introduce finalise_el2_state macro Quentin Perret
2023-02-01 14:17 ` Mark Brown
2023-02-01 10:37 ` [PATCH 3/4] KVM: arm64: Use sanitized values in __check_override in nVHE Quentin Perret
2023-02-01 10:37 ` [PATCH 4/4] KVM: arm64: Finalise EL2 state from pKVM PSCI relay Quentin Perret
2023-02-01 14:48 ` [PATCH 0/4] KVM: arm64: Fix CPU resume/on with pKVM Marc Zyngier
2023-02-01 16:57 ` Quentin Perret
2023-02-02 21:43 ` Oliver Upton
2023-02-06 17:12 ` Oliver Upton
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