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From: Will Deacon <will@kernel.org>
To: kvmarm@lists.linux.dev
Cc: Will Deacon <will@kernel.org>,
	Sean Christopherson <seanjc@google.com>,
	Vincent Donnefort <vdonnefort@google.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Chao Peng <chao.p.peng@linux.intel.com>,
	Quentin Perret <qperret@google.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Fuad Tabba <tabba@google.com>,
	Oliver Upton <oliver.upton@linux.dev>,
	Marc Zyngier <maz@kernel.org>,
	kernel-team@android.com, kvm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 10/25] KVM: arm64: Add hyp_spinlock_t static initializer
Date: Mon, 17 Oct 2022 12:51:54 +0100	[thread overview]
Message-ID: <20221017115209.2099-11-will@kernel.org> (raw)
In-Reply-To: <20221017115209.2099-1-will@kernel.org>

From: Fuad Tabba <tabba@google.com>

Introduce a static initializer macro for 'hyp_spinlock_t' so that it is
straightforward to instantiate global locks at EL2. This will be later
utilised for locking the VM table in the hypervisor.

Tested-by: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
---
 arch/arm64/kvm/hyp/include/nvhe/spinlock.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/hyp/include/nvhe/spinlock.h b/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
index 4652fd04bdbe..7c7ea8c55405 100644
--- a/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
+++ b/arch/arm64/kvm/hyp/include/nvhe/spinlock.h
@@ -28,9 +28,17 @@ typedef union hyp_spinlock {
 	};
 } hyp_spinlock_t;
 
+#define __HYP_SPIN_LOCK_INITIALIZER \
+	{ .__val = 0 }
+
+#define __HYP_SPIN_LOCK_UNLOCKED \
+	((hyp_spinlock_t) __HYP_SPIN_LOCK_INITIALIZER)
+
+#define DEFINE_HYP_SPINLOCK(x)	hyp_spinlock_t x = __HYP_SPIN_LOCK_UNLOCKED
+
 #define hyp_spin_lock_init(l)						\
 do {									\
-	*(l) = (hyp_spinlock_t){ .__val = 0 };				\
+	*(l) = __HYP_SPIN_LOCK_UNLOCKED;				\
 } while (0)
 
 static inline void hyp_spin_lock(hyp_spinlock_t *lock)
-- 
2.38.0.413.g74048e4d9e-goog


  parent reply	other threads:[~2022-10-17 11:53 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-17 11:51 [PATCH v4 00/25] KVM: arm64: Introduce pKVM hyp VM and vCPU state at EL2 Will Deacon
2022-10-17 11:51 ` [PATCH v4 01/25] KVM: arm64: Move hyp refcount manipulation helpers to common header file Will Deacon
2022-10-17 20:29   ` Philippe Mathieu-Daudé
2022-10-17 11:51 ` [PATCH v4 02/25] KVM: arm64: Allow attaching of non-coalescable pages to a hyp pool Will Deacon
2022-10-17 11:51 ` [PATCH v4 03/25] KVM: arm64: Back the hypervisor 'struct hyp_page' array for all memory Will Deacon
2022-10-17 11:51 ` [PATCH v4 04/25] KVM: arm64: Fix-up hyp stage-1 refcounts for all pages mapped at EL2 Will Deacon
2022-10-17 11:51 ` [PATCH v4 05/25] KVM: arm64: Unify identifiers used to distinguish host and hypervisor Will Deacon
2022-10-17 20:21   ` Philippe Mathieu-Daudé
2022-10-17 11:51 ` [PATCH v4 06/25] KVM: arm64: Implement do_donate() helper for donating memory Will Deacon
2022-10-17 11:51 ` [PATCH v4 07/25] KVM: arm64: Prevent the donation of no-map pages Will Deacon
2022-10-18 13:42   ` Philippe Mathieu-Daudé
2022-10-17 11:51 ` [PATCH v4 08/25] KVM: arm64: Add helpers to pin memory shared with the hypervisor at EL2 Will Deacon
2022-10-17 11:51 ` [PATCH v4 09/25] KVM: arm64: Include asm/kvm_mmu.h in nvhe/mem_protect.h Will Deacon
2022-10-17 20:22   ` Philippe Mathieu-Daudé
2022-10-17 11:51 ` Will Deacon [this message]
2022-10-18 13:51   ` [PATCH v4 10/25] KVM: arm64: Add hyp_spinlock_t static initializer Philippe Mathieu-Daudé
2022-10-17 11:51 ` [PATCH v4 11/25] KVM: arm64: Rename 'host_kvm' to 'host_mmu' Will Deacon
2022-10-18 13:47   ` Philippe Mathieu-Daudé
2022-10-17 11:51 ` [PATCH v4 12/25] KVM: arm64: Add infrastructure to create and track pKVM instances at EL2 Will Deacon
2022-10-18 15:13   ` Quentin Perret
2022-10-19 12:35     ` Will Deacon
2022-10-18 16:21   ` Quentin Perret
2022-10-19 12:45     ` Will Deacon
2022-10-18 16:33   ` Quentin Perret
2022-10-19 11:57     ` Will Deacon
2022-10-19 13:35       ` Quentin Perret
2022-10-18 16:40   ` Quentin Perret
2022-10-19 12:44     ` Will Deacon
2022-10-18 16:45   ` Quentin Perret
2022-10-19 12:18     ` Fuad Tabba
2022-10-17 11:51 ` [PATCH v4 13/25] KVM: arm64: Instantiate pKVM hypervisor VM and vCPU structures from EL1 Will Deacon
2022-10-19 15:46   ` Quentin Perret
2022-10-19 16:00   ` Quentin Perret
2022-10-19 16:34     ` Will Deacon
2022-10-17 11:51 ` [PATCH v4 14/25] KVM: arm64: Add per-cpu fixmap infrastructure at EL2 Will Deacon
2022-10-18 11:06   ` Mark Rutland
2022-10-18 14:05     ` Will Deacon
2022-10-18 16:52       ` Mark Rutland
2022-10-19 12:01         ` Will Deacon
2022-10-17 11:51 ` [PATCH v4 15/25] KVM: arm64: Initialise hypervisor copies of host symbols unconditionally Will Deacon
2022-10-17 20:26   ` Philippe Mathieu-Daudé
2022-10-17 11:52 ` [PATCH v4 16/25] KVM: arm64: Provide I-cache invalidation by virtual address at EL2 Will Deacon
2022-10-17 11:52 ` [PATCH v4 17/25] KVM: arm64: Add generic hyp_memcache helpers Will Deacon
2022-10-17 11:52 ` [PATCH v4 18/25] KVM: arm64: Consolidate stage-2 initialisation into a single function Will Deacon
2022-10-17 11:52 ` [PATCH v4 19/25] KVM: arm64: Instantiate guest stage-2 page-tables at EL2 Will Deacon
2022-10-17 11:52 ` [PATCH v4 20/25] KVM: arm64: Return guest memory from EL2 via dedicated teardown memcache Will Deacon
2022-10-19 15:52   ` Quentin Perret
2022-10-19 16:24     ` Will Deacon
2022-10-17 11:52 ` [PATCH v4 21/25] KVM: arm64: Unmap 'kvm_arm_hyp_percpu_base' from the host Will Deacon
2022-10-17 11:52 ` [PATCH v4 22/25] KVM: arm64: Maintain a copy of 'kvm_arm_vmid_bits' at EL2 Will Deacon
2022-10-17 11:52 ` [PATCH v4 23/25] KVM: arm64: Explicitly map 'kvm_vgic_global_state' " Will Deacon
2022-10-17 11:52 ` [PATCH v4 24/25] KVM: arm64: Don't unnecessarily map host kernel sections " Will Deacon
2022-10-17 11:52 ` [PATCH v4 25/25] KVM: arm64: Use the pKVM hyp vCPU structure in handle___kvm_vcpu_run() Will Deacon

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