All of lore.kernel.org
 help / color / mirror / Atom feed
From: Christoffer Dall <christoffer.dall@linaro.org>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Radim Krčmář" <rkrcmar@redhat.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: [PULL 24/27] KVM: arm/arm64: GICv4: Enable VLPI support
Date: Mon, 13 Nov 2017 10:17:49 +0100	[thread overview]
Message-ID: <20171113091752.10663-25-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171113091752.10663-1-christoffer.dall@linaro.org>

From: Marc Zyngier <marc.zyngier@arm.com>

All it takes is the has_v4 flag to be set in gic_kvm_info
as well as "kvm-arm.vgic_v4_enable=1" being passed on the
command line for GICv4 to be enabled in KVM.

Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
 Documentation/admin-guide/kernel-parameters.txt |  4 ++++
 virt/kvm/arm/vgic/vgic-v3.c                     | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 3daa0a590236..6f897a4c8281 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1881,6 +1881,10 @@
 			[KVM,ARM] Trap guest accesses to GICv3 common
 			system registers
 
+	kvm-arm.vgic_v4_enable=
+			[KVM,ARM] Allow use of GICv4 for direct injection of
+			LPIs.
+
 	kvm-intel.ept=	[KVM,Intel] Disable extended page tables
 			(virtualized MMU) support on capable Intel chips.
 			Default is 1 (enabled)
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index 863351c090d8..2f05f732d3fd 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -24,6 +24,7 @@
 static bool group0_trap;
 static bool group1_trap;
 static bool common_trap;
+static bool gicv4_enable;
 
 void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
 {
@@ -461,6 +462,12 @@ static int __init early_common_trap_cfg(char *buf)
 }
 early_param("kvm-arm.vgic_v3_common_trap", early_common_trap_cfg);
 
+static int __init early_gicv4_enable(char *buf)
+{
+	return strtobool(buf, &gicv4_enable);
+}
+early_param("kvm-arm.vgic_v4_enable", early_gicv4_enable);
+
 /**
  * vgic_v3_probe - probe for a GICv3 compatible interrupt controller in DT
  * @node:	pointer to the DT node
@@ -480,6 +487,13 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
 	kvm_vgic_global_state.can_emulate_gicv2 = false;
 	kvm_vgic_global_state.ich_vtr_el2 = ich_vtr_el2;
 
+	/* GICv4 support? */
+	if (info->has_v4) {
+		kvm_vgic_global_state.has_gicv4 = gicv4_enable;
+		kvm_info("GICv4 support %sabled\n",
+			 gicv4_enable ? "en" : "dis");
+	}
+
 	if (!info->vcpu.start) {
 		kvm_info("GICv3: no GICV resource entry\n");
 		kvm_vgic_global_state.vcpu_base = 0;
-- 
2.14.2

WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PULL 24/27] KVM: arm/arm64: GICv4: Enable VLPI support
Date: Mon, 13 Nov 2017 10:17:49 +0100	[thread overview]
Message-ID: <20171113091752.10663-25-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171113091752.10663-1-christoffer.dall@linaro.org>

From: Marc Zyngier <marc.zyngier@arm.com>

All it takes is the has_v4 flag to be set in gic_kvm_info
as well as "kvm-arm.vgic_v4_enable=1" being passed on the
command line for GICv4 to be enabled in KVM.

Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
 Documentation/admin-guide/kernel-parameters.txt |  4 ++++
 virt/kvm/arm/vgic/vgic-v3.c                     | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 3daa0a590236..6f897a4c8281 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1881,6 +1881,10 @@
 			[KVM,ARM] Trap guest accesses to GICv3 common
 			system registers
 
+	kvm-arm.vgic_v4_enable=
+			[KVM,ARM] Allow use of GICv4 for direct injection of
+			LPIs.
+
 	kvm-intel.ept=	[KVM,Intel] Disable extended page tables
 			(virtualized MMU) support on capable Intel chips.
 			Default is 1 (enabled)
diff --git a/virt/kvm/arm/vgic/vgic-v3.c b/virt/kvm/arm/vgic/vgic-v3.c
index 863351c090d8..2f05f732d3fd 100644
--- a/virt/kvm/arm/vgic/vgic-v3.c
+++ b/virt/kvm/arm/vgic/vgic-v3.c
@@ -24,6 +24,7 @@
 static bool group0_trap;
 static bool group1_trap;
 static bool common_trap;
+static bool gicv4_enable;
 
 void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
 {
@@ -461,6 +462,12 @@ static int __init early_common_trap_cfg(char *buf)
 }
 early_param("kvm-arm.vgic_v3_common_trap", early_common_trap_cfg);
 
+static int __init early_gicv4_enable(char *buf)
+{
+	return strtobool(buf, &gicv4_enable);
+}
+early_param("kvm-arm.vgic_v4_enable", early_gicv4_enable);
+
 /**
  * vgic_v3_probe - probe for a GICv3 compatible interrupt controller in DT
  * @node:	pointer to the DT node
@@ -480,6 +487,13 @@ int vgic_v3_probe(const struct gic_kvm_info *info)
 	kvm_vgic_global_state.can_emulate_gicv2 = false;
 	kvm_vgic_global_state.ich_vtr_el2 = ich_vtr_el2;
 
+	/* GICv4 support? */
+	if (info->has_v4) {
+		kvm_vgic_global_state.has_gicv4 = gicv4_enable;
+		kvm_info("GICv4 support %sabled\n",
+			 gicv4_enable ? "en" : "dis");
+	}
+
 	if (!info->vcpu.start) {
 		kvm_info("GICv3: no GICV resource entry\n");
 		kvm_vgic_global_state.vcpu_base = 0;
-- 
2.14.2

  parent reply	other threads:[~2017-11-13  9:17 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-13  9:17 [PULL 00/27] KVM/ARM GICv4 Support for v4.15 Christoffer Dall
2017-11-13  9:17 ` Christoffer Dall
2017-11-13  9:17 ` [PULL 01/27] KVM: arm/arm64: register irq bypass consumer on ARM/ARM64 Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 02/27] KVM: arm/arm64: vgic: restructure kvm_vgic_(un)map_phys_irq Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 03/27] KVM: arm: Select ARM_GIC_V3 and ARM_GIC_V3_ITS Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 04/27] KVM: arm/arm64: vgic: Move kvm_vgic_destroy call around Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 05/27] KVM: arm/arm64: vITS: Add MSI translation helpers Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 06/27] KVM: arm/arm64: vITS: Add a helper to update the affinity of an LPI Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 07/27] KVM: arm/arm64: GICv4: Add property field and per-VM predicate Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 08/27] KVM: arm/arm64: GICv4: Add init/teardown of the per-VM vPE irq domain Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 09/27] KVM: arm/arm64: GICv4: Wire mapping/unmapping of VLPIs in VFIO irq bypass Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 10/27] KVM: arm/arm64: GICv4: Handle INT command applied to a VLPI Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 11/27] KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 12/27] KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 13/27] KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 14/27] KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 15/27] KVM: arm/arm64: GICv4: Propagate property updates to VLPIs Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 16/27] KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 17/27] KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 18/27] KVM: arm/arm64: GICv4: Add doorbell interrupt handling Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 19/27] KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 20/27] KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 21/27] KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 22/27] KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 23/27] KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` Christoffer Dall [this message]
2017-11-13  9:17   ` [PULL 24/27] KVM: arm/arm64: GICv4: Enable VLPI support Christoffer Dall
2017-11-13  9:17 ` [PULL 25/27] KVM: arm/arm64: GICv4: Theory of operations Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 26/27] KVM: arm/arm64: Fix GICv4 ITS initialization issues Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-13  9:17 ` [PULL 27/27] KVM: arm/arm64: Don't queue VLPIs on INV/INVALL Christoffer Dall
2017-11-13  9:17   ` Christoffer Dall
2017-11-17 12:23 ` [PULL 00/27] KVM/ARM GICv4 Support for v4.15 Paolo Bonzini
2017-11-17 12:23   ` Paolo Bonzini

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20171113091752.10663-25-christoffer.dall@linaro.org \
    --to=christoffer.dall@linaro.org \
    --cc=kvm@vger.kernel.org \
    --cc=kvmarm@lists.cs.columbia.edu \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=marc.zyngier@arm.com \
    --cc=pbonzini@redhat.com \
    --cc=rkrcmar@redhat.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.