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From: Christoffer Dall <cdall@linaro.org>
To: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org
Cc: Marc Zyngier <marc.zyngier@arm.com>,
	kvm@vger.kernel.org, Christoffer Dall <cdall@linaro.org>
Subject: [PATCH v2 03/11] KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
Date: Tue,  9 May 2017 10:56:10 +0200	[thread overview]
Message-ID: <20170509085618.28311-4-cdall@linaro.org> (raw)
In-Reply-To: <20170509085618.28311-1-cdall@linaro.org>

There are occasional needs to use the index of vcpu in the kvm->vcpus
array to map something related to a VCPU.  For example, unlike the
vcpu->vcpu_id, the vcpu index is guaranteed to not be sparse across all
vcpus which is useful when allocating a memory area for each vcpu.

Signed-off-by: Christoffer Dall <cdall@linaro.org>
---
 include/linux/kvm_host.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 2c14ad9..12eb26d 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -490,6 +490,17 @@ static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
 	return NULL;
 }
 
+static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
+{
+	struct kvm_vcpu *tmp;
+	int idx;
+
+	kvm_for_each_vcpu(idx, tmp, vcpu->kvm)
+		if (tmp == vcpu)
+			return idx;
+	BUG();
+}
+
 #define kvm_for_each_memslot(memslot, slots)	\
 	for (memslot = &slots->memslots[0];	\
 	      memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
-- 
2.9.0

WARNING: multiple messages have this Message-ID (diff)
From: cdall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 03/11] KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
Date: Tue,  9 May 2017 10:56:10 +0200	[thread overview]
Message-ID: <20170509085618.28311-4-cdall@linaro.org> (raw)
In-Reply-To: <20170509085618.28311-1-cdall@linaro.org>

There are occasional needs to use the index of vcpu in the kvm->vcpus
array to map something related to a VCPU.  For example, unlike the
vcpu->vcpu_id, the vcpu index is guaranteed to not be sparse across all
vcpus which is useful when allocating a memory area for each vcpu.

Signed-off-by: Christoffer Dall <cdall@linaro.org>
---
 include/linux/kvm_host.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 2c14ad9..12eb26d 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -490,6 +490,17 @@ static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
 	return NULL;
 }
 
+static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
+{
+	struct kvm_vcpu *tmp;
+	int idx;
+
+	kvm_for_each_vcpu(idx, tmp, vcpu->kvm)
+		if (tmp == vcpu)
+			return idx;
+	BUG();
+}
+
 #define kvm_for_each_memslot(memslot, slots)	\
 	for (memslot = &slots->memslots[0];	\
 	      memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
-- 
2.9.0

  parent reply	other threads:[~2017-05-09  8:56 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-09  8:56 [PATCH v2 00/11] Fixes to v7 of the vITS save/restore series Christoffer Dall
2017-05-09  8:56 ` Christoffer Dall
2017-05-09  8:56 ` [PATCH v2 01/11] KVM: arm/arm64: Clarification and relaxation to ITS save/restore ABI Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  8:56 ` [PATCH v2 02/11] KVM: arm/arm64: vgic: Rename kvm_vgic_vcpu_init to kvm_vgic_vcpu_enable Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  8:56 ` Christoffer Dall [this message]
2017-05-09  8:56   ` [PATCH v2 03/11] KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus Christoffer Dall
2017-05-09  9:44   ` Auger Eric
2017-05-09  9:44     ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 04/11] KVM: arm/arm64: Refactor vgic_register_redist_iodevs Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  9:44   ` Auger Eric
2017-05-09  9:44     ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 05/11] KVM: arm/arm64: Make vgic_v3_check_base more broadly usable Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  9:45   ` Auger Eric
2017-05-09  9:45     ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 06/11] KVM: arm/arm64: Slightly rework kvm_vgic_addr Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  8:56 ` [PATCH v2 07/11] KVM: arm/arm64: Register iodevs when setting redist base and creating VCPUs Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-16 11:23   ` Jean-Philippe Brucker
2017-05-16 11:23     ` Jean-Philippe Brucker
2017-05-16 12:39     ` Auger Eric
2017-05-16 12:39       ` Auger Eric
2017-05-16 20:31       ` Christoffer Dall
2017-05-16 20:31         ` Christoffer Dall
2017-05-17 11:18     ` Christoffer Dall
2017-05-17 11:18       ` Christoffer Dall
2017-05-17 12:28       ` Jean-Philippe Brucker
2017-05-17 12:28         ` Jean-Philippe Brucker
2017-05-17 13:19       ` Auger Eric
2017-05-17 13:19         ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 08/11] KVM: arm/arm64: Get rid of its->initialized field Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  9:45   ` Auger Eric
2017-05-09  9:45     ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 09/11] KVM: arm/arm64: Register ITS iodev when setting base address Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  9:53   ` Auger Eric
2017-05-09  9:53     ` Auger Eric
2017-05-09  8:56 ` [PATCH v2 10/11] KVM: arm/arm64: Don't call map_resources when restoring ITS tables Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  8:56 ` [PATCH v2 11/11] KVM: arm/arm64: vgic-its: Cleanup after failed ITT restore Christoffer Dall
2017-05-09  8:56   ` Christoffer Dall
2017-05-09  9:54 ` [PATCH v2 00/11] Fixes to v7 of the vITS save/restore series Auger Eric
2017-05-09  9:54   ` Auger Eric

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