[PATCH] iommu/vt-d: Use cmpxchg16b to update posted format IRTE atomically

If IRTE is in posted format, the 'pda' field goes across the 64-bit boundary, we need use cmpxchg16b to atomically update it. We only expose posted-interrupt when X86_FEATURE_CX16 is supported and use to update it atomically. Signed-off-by: Feng Wu --- drivers/iommu/intel_irq_remapp

[PATCH v9 09/18] KVM: Define a new interface kvm_intr_is_single_vcpu()

single-CPU, we can use PI to deliver the interrupts to it. Full functionality of lowest-priority support will be added later. Signed-off-by: Feng Wu --- v9: - Move kvm_intr_is_single_vcpu_fast() to lapic.c - Remove incorrect WARN_ON_ONCE() v8: - Some optimizations in kvm_intr_is_single_vcpu

[PATCH v9 17/18] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

This patch updates the Posted-Interrupts Descriptor when vCPU is blocked. pre-block: - Add the vCPU to the blocked per-CPU list - Set 'NV' to POSTED_INTR_WAKEUP_VECTOR post-block: - Remove the vCPU from the per-CPU list Signed-off-by: Feng Wu --- v9: - Add descr

[PATCH v9 15/18] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'

This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu --- v9: - Use 'if' instead of "? :" in kvm_arch_update_irqfd_routing

[PATCH v9 12/18] vfio: Register/unregister irq_bypass_producer

This patch adds the registration/unregistration of an irq_bypass_producer for MSI/MSIx on vfio pci devices. Signed-off-by: Feng Wu --- v8: - Merge "[PATCH v7 08/17] vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices" into this patch. v6: - Make the add_consumer and del_consumer

[PATCH v9 13/18] KVM: x86: Update IRTE for posted-interrupts

This patch adds the routine to update IRTE for posted-interrupts when guest changes the interrupt configuration. Signed-off-by: Feng Wu --- v9: - Check !kvm_arch_has_assigned_device(kvm) first then !irq_remapping_cap(IRQ_POSTING_CAP) v8: - Move 'kvm_arch_update_pi_irte' to vmx.c as

[PATCH v9 14/18] KVM: Implement IRQ bypass consumer callbacks for x86

Implement the following callbacks for x86: - kvm_arch_irq_bypass_add_producer - kvm_arch_irq_bypass_del_producer - kvm_arch_irq_bypass_stop: dummy callback - kvm_arch_irq_bypass_resume: dummy callback and set CONFIG_HAVE_KVM_IRQ_BYPASS for x86. Signed-off-by: Feng Wu --- v8: - Move the weak

[PATCH v9 16/18] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

This patch updates the Posted-Interrupts Descriptor when vCPU is preempted. sched out: - Set 'SN' to suppress furture non-urgent interrupts posted for the vCPU. sched in: - Clear 'SN' - Change NDST if vCPU is scheduled to a different CPU - Set 'NV' to POSTED_INTR_

[PATCH v9 18/18] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts

Enable VT-d Posted-Interrtups and add a command line parameter for it. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- Documentation/kernel-parameters.txt | 1 + drivers/iommu/irq_remapping.c | 12 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a

[PATCH v9 04/18] KVM: create kvm_irqfd.h

From: Eric Auger Move _irqfd_resampler and _irqfd struct declarations in a new public header: kvm_irqfd.h. They are respectively renamed into kvm_kernel_irqfd_resampler and kvm_kernel_irqfd. Those datatypes will be used by architecture specific code, in the context of IRQ bypass manager integrati

[PATCH v9 06/18] KVM: eventfd: add irq bypass consumer management

From: Eric Auger This patch adds the registration/unregistration of an irq_bypass_consumer on irqfd assignment/deassignment. Signed-off-by: Eric Auger Signed-off-by: Feng Wu --- v4 -> v5: - due to removal of static inline stubs, add #ifdef CONFIG_HAVE_KVM_IRQ_BYPASS around consu

[PATCH v9 11/18] KVM: make kvm_set_msi_irq() public

Make kvm_set_msi_irq() public, we can use this function outside. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- v8: - Export kvm_set_msi_irq() so we can use it in vmx code arch/x86/include/asm/kvm_host.h | 4 arch/x86/kvm/irq_comm.c | 5 +++-- 2 files changed, 7 insertions

[PATCH v9 08/18] KVM: Add some helper functions for Posted-Interrupts

This patch adds some helper functions to manipulate the Posted-Interrupts Descriptor. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 26 ++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 271dd70

[PATCH v9 10/18] KVM: Make struct kvm_irq_routing_table accessible

Move struct kvm_irq_routing_table from irqchip.c to kvm_host.h, so we can use it outside of irqchip.c. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- include/linux/kvm_host.h | 14 ++ virt/kvm/irqchip.c | 10 -- 2 files changed, 14 insertions(+), 10 deletions

[PATCH v9 05/18] KVM: introduce kvm_arch functions for IRQ bypass

Signed-off-by: Feng Wu --- v4 -> v5: - remove static inline stub functions v2 -> v3 (Feng Wu): - use 'kvm_arch_irq_bypass_start' instead of 'kvm_arch_irq_bypass_resume' - Remove 'kvm_arch_irq_bypass_update', which is not needed to be a irqbypass

[PATCH v9 07/18] KVM: Extend struct pi_desc for VT-d Posted-Interrupts

Extend struct pi_desc for VT-d Posted-Interrupts. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 20 ++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 83b7b5c..271dd70 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86

[PATCH v9 00/18] Add VT-d Posted-Interrupts support - including prerequisite series

on the new hierarchy irqdomain patches provided by Jiang Liu *** BLURB HERE *** Alex Williamson (1): virt: IRQ bypass manager Eric Auger (4): KVM: arm/arm64: select IRQ_BYPASS_MANAGER KVM: create kvm_irqfd.h KVM: introduce kvm_arch functions for IRQ bypass KVM: eventfd: add irq

[PATCH v9 01/18] virt: IRQ bypass manager

automatically enabled. Signed-off-by: Alex Williamson Reviewed-by: Eric Auger Tested-by: Eric Auger Tested-by: Feng Wu --- v4: All producer callbacks are optional, as with Intel PI, it's possible for the producer to be blissfully unaware of the bypass. MAINTAINERS | 7 ++ in

[PATCH v9 03/18] KVM: arm/arm64: select IRQ_BYPASS_MANAGER

From: Eric Auger Select IRQ_BYPASS_MANAGER when CONFIG_KVM is set Also add compilation of virt/lib. Signed-off-by: Eric Auger Signed-off-by: Feng Wu --- v3 -> v4: - add compilation of virt/lib in arm/arm64 KVM v2 -> v3: - [Feng Wu] Correct a typo in 'arch/arm64/kvm/Kconfig'

[PATCH v9 02/18] KVM: x86: select IRQ_BYPASS_MANAGER

Select IRQ_BYPASS_MANAGER for x86 when CONFIG_KVM is set Signed-off-by: Feng Wu --- arch/x86/kvm/Kconfig | 2 ++ arch/x86/kvm/Makefile | 3 +++ 2 files changed, 5 insertions(+) diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index d8a1d56..c951d44 100644 --- a/arch/x86/kvm/Kconfig

[PATCH v8 13/13] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts

Enable VT-d Posted-Interrtups and add a command line parameter for it. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- Documentation/kernel-parameters.txt | 1 + drivers/iommu/irq_remapping.c | 12 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a

[PATCH v8 11/13] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

This patch updates the Posted-Interrupts Descriptor when vCPU is blocked. pre-block: - Add the vCPU to the blocked per-CPU list - Set 'NV' to POSTED_INTR_WAKEUP_VECTOR post-block: - Remove the vCPU from the per-CPU list Signed-off-by: Feng Wu --- v8: - Rename 'pi_pre_block

[PATCH v8 12/13] KVM: Warn if 'SN' is set during posting interrupts by software

is set. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 16 1 file changed, 16 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9888c43..58fbbc6 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4498,6 +4498,22 @

[PATCH v8 09/13] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'

This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu --- v8: - Remove callback .arch_update() - Remove kvm_arch_irqfd_init() - Call kvm_arch_

[PATCH v8 07/13] KVM: x86: Update IRTE for posted-interrupts

This patch adds the routine to update IRTE for posted-interrupts when guest changes the interrupt configuration. Signed-off-by: Feng Wu --- v8: - Move 'kvm_arch_update_pi_irte' to vmx.c as a callback - Only update the PI irte when VM has assigned devices - Add a trace point for V

[PATCH v8 00/13] Add VT-d Posted-Interrupts support

ol" * Rebase this patchset on git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git, then revise some irq logic based on the new hierarchy irqdomain patches provided by Jiang Liu Feng Wu (13): KVM: Extend struct pi_desc for VT-d Posted-Interrupts KVM: Add some helper functions for Posted-I

[PATCH v8 02/13] KVM: Add some helper functions for Posted-Interrupts

This patch adds some helper functions to manipulate the Posted-Interrupts Descriptor. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- arch/x86/kvm/vmx.c | 26 ++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 271dd70

[PATCH v8 03/13] KVM: Define a new interface kvm_intr_is_single_vcpu()

single-CPU, we can use PI to deliver the interrupts to it. Full functionality of lowest-priority support will be added later. Signed-off-by: Feng Wu --- v8: - Some optimizations in kvm_intr_is_single_vcpu(). - Expose kvm_intr_is_single_vcpu() so we can use it in vmx code. - Add

[PATCH v8 06/13] vfio: Register/unregister irq_bypass_producer

This patch adds the registration/unregistration of an irq_bypass_producer for MSI/MSIx on vfio pci devices. Signed-off-by: Feng Wu --- v8: - Merge "[PATCH v7 08/17] vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices" into this patch. v6: - Make the add_consumer and del_consumer

[PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

This patch updates the Posted-Interrupts Descriptor when vCPU is preempted. sched out: - Set 'SN' to suppress furture non-urgent interrupts posted for the vCPU. sched in: - Clear 'SN' - Change NDST if vCPU is scheduled to a different CPU - Set 'NV' to POSTED_INTR_

[PATCH v8 05/13] KVM: make kvm_set_msi_irq() public

Make kvm_set_msi_irq() public, we can use this function outside. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- v8: - Export kvm_set_msi_irq() so we can use it in vmx code arch/x86/include/asm/kvm_host.h | 4 arch/x86/kvm/irq_comm.c | 5 +++-- 2 files changed, 7 insertions

[PATCH v8 08/13] KVM: Implement IRQ bypass consumer callbacks for x86

Implement the following callbacks for x86: - kvm_arch_irq_bypass_add_producer - kvm_arch_irq_bypass_del_producer - kvm_arch_irq_bypass_stop: dummy callback - kvm_arch_irq_bypass_resume: dummy callback and set CONFIG_HAVE_KVM_IRQ_BYPASS for x86. Signed-off-by: Feng Wu --- v8: - Move the weak

[PATCH v8 04/13] KVM: Make struct kvm_irq_routing_table accessible

Move struct kvm_irq_routing_table from irqchip.c to kvm_host.h, so we can use it outside of irqchip.c. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- include/linux/kvm_host.h | 14 ++ virt/kvm/irqchip.c | 10 -- 2 files changed, 14 insertions(+), 10 deletions

[PATCH v8 01/13] KVM: Extend struct pi_desc for VT-d Posted-Interrupts

Extend struct pi_desc for VT-d Posted-Interrupts. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 20 ++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 83b7b5c..271dd70 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86

[PATCH v7 16/17] KVM: Warn if 'SN' is set during posting interrupts by software

is set. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 16 1 file changed, 16 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 64e35ea..eb640a1 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4494,6 +4494,22 @

[PATCH v7 17/17] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts

Enable VT-d Posted-Interrtups and add a command line parameter for it. Signed-off-by: Feng Wu --- Documentation/kernel-parameters.txt | 1 + drivers/iommu/irq_remapping.c | 12 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/Documentation/kernel-parameters.txt

[PATCH v7 15/17] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

This patch updates the Posted-Interrupts Descriptor when vCPU is blocked. pre-block: - Add the vCPU to the blocked per-CPU list - Set 'NV' to POSTED_INTR_WAKEUP_VECTOR post-block: - Remove the vCPU from the per-CPU list Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h |

[PATCH v7 07/17] KVM: make kvm_set_msi_irq() public

Make kvm_set_msi_irq() public, we can use this function outside. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 4 arch/x86/kvm/irq_comm.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm

[PATCH v7 11/17] KVM: Define two weak arch callbacks for irq bypass manager

Define two weak arch callbacks so that archs that don't need them don't need define them. Signed-off-by: Feng Wu --- virt/kvm/eventfd.c | 10 ++ 1 file changed, 10 insertions(+) diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index d7a230f..f3050b9 100644 --- a/virt/kvm

[PATCH v7 08/17] vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices

Enable irq bypass manager for vfio PCI devices. Signed-off-by: Feng Wu --- drivers/vfio/pci/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index 579d83b..02912f1 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig

[PATCH v7 14/17] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

This patch updates the Posted-Interrupts Descriptor when vCPU is preempted. sched out: - Set 'SN' to suppress furture non-urgent interrupts posted for the vCPU. sched in: - Clear 'SN' - Change NDST if vCPU is scheduled to a different CPU - Set 'NV' to POSTED_INTR_

[PATCH v7 12/17] KVM: Implement IRQ bypass consumer callbacks for x86

Implement the following callbacks for x86: - kvm_arch_irq_bypass_add_producer - kvm_arch_irq_bypass_del_producer - kvm_arch_irq_bypass_stop: dummy callback - kvm_arch_irq_bypass_resume: dummy callback and set CONFIG_HAVE_KVM_IRQ_BYPASS for x86. Signed-off-by: Feng Wu --- arch/x86/include/asm

[PATCH v7 01/17] KVM: Extend struct pi_desc for VT-d Posted-Interrupts

Extend struct pi_desc for VT-d Posted-Interrupts. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 20 ++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 83b7b5c..271dd70 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86

[PATCH v7 13/17] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'

This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/x86.c | 5

[PATCH v7 09/17] vfio: Register/unregister irq_bypass_producer

ARN_ON() when irq_bypass_register_producer fails - Remove optional dummy callbacks for irq producer Signed-off-by: Feng Wu --- drivers/vfio/pci/vfio_pci_intrs.c | 9 + drivers/vfio/pci/vfio_pci_private.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/dri

[PATCH v7 10/17] KVM: x86: Update IRTE for posted-interrupts

This patch adds the routine to update IRTE for posted-interrupts when guest changes the interrupt configuration. Signed-off-by: Feng Wu --- arch/x86/kvm/x86.c | 73 ++ 1 file changed, 73 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch

[PATCH v7 04/17] KVM: Get Posted-Interrupts descriptor address from 'struct kvm_vcpu'

Define an interface to get PI descriptor address from the vCPU structure. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/vmx.c | 11 +++ 2 files changed, 13 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm

[PATCH v7 00/17] Add VT-d Posted-Interrupts support

rg/pub/scm/linux/kernel/git/tip/tip.git, then revise some irq logic based on the new hierarchy irqdomain patches provided by Jiang Liu Feng Wu (17): KVM: Extend struct pi_desc for VT-d Posted-Interrupts KVM: Add some helper functions for Posted-Interrupts KVM: Define a new interface kvm_

[PATCH v7 06/17] KVM: Make struct kvm_irq_routing_table accessible

Move struct kvm_irq_routing_table from irqchip.c to kvm_host.h, so we can use it outside of irqchip.c. Signed-off-by: Feng Wu --- include/linux/kvm_host.h | 14 ++ virt/kvm/irqchip.c | 10 -- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/include

[PATCH v7 05/17] KVM: Add interfaces to control PI outside vmx

This patch adds pi_clear_sn and pi_set_sn to struct kvm_x86_ops, so we can set/clear SN outside vmx. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 3 +++ arch/x86/kvm/vmx.c | 13 + 2 files changed, 16 insertions(+) diff --git a/arch/x86/include/asm

[PATCH v7 02/17] KVM: Add some helper functions for Posted-Interrupts

This patch adds some helper functions to manipulate the Posted-Interrupts Descriptor. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 26 ++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 271dd70..316f9bf 100644 --- a/arch

[PATCH v7 03/17] KVM: Define a new interface kvm_intr_is_single_vcpu()

single-CPU, we can use PI to deliver the interrupts to it. Full functionality of lowest-priority support will be added later. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 3 +++ arch/x86/kvm/irq_comm.c | 24 2 files changed, 27 insertions

[PATCH v6 11/16] KVM: Implement IRQ bypass consumer callbacks for x86

Implement the following callbacks for x86: - kvm_arch_irq_bypass_add_producer - kvm_arch_irq_bypass_del_producer - kvm_arch_irq_bypass_stop: dummy callback - kvm_arch_irq_bypass_resume: dummy callback and set CONFIG_HAVE_KVM_IRQ_BYPASS for x86. Signed-off-by: Feng Wu --- arch/x86/include/asm

[PATCH v6 13/16] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

This patch updates the Posted-Interrupts Descriptor when vCPU is preempted. sched out: - Set 'SN' to suppress furture non-urgent interrupts posted for the vCPU. sched in: - Clear 'SN' - Change NDST if vCPU is scheduled to a different CPU - Set 'NV' to POSTED_INTR_

[PATCH v6 16/16] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts

Enable VT-d Posted-Interrtups and add a command line parameter for it. Signed-off-by: Feng Wu --- Documentation/kernel-parameters.txt | 1 + drivers/iommu/irq_remapping.c | 12 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/Documentation/kernel-parameters.txt

[PATCH v6 10/16] KVM: x86: Update IRTE for posted-interrupts

This patch adds the routine to update IRTE for posted-interrupts when guest changes the interrupt configuration. Signed-off-by: Feng Wu --- arch/x86/kvm/x86.c | 73 ++ 1 file changed, 73 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch

[PATCH v6 12/16] KVM: Add an arch specific hooks in 'struct kvm_kernel_irqfd'

This patch adds an arch specific hooks 'arch_update' in 'struct kvm_kernel_irqfd'. On Intel side, it is used to update the IRTE when VT-d posted-interrupts is used. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/x86.c | 5

[PATCH v6 15/16] KVM: Warn if 'SN' is set during posting interrupts by software

is set. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 16 1 file changed, 16 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 6b50eba..b4f5600 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4477,6 +4477,22 @

[PATCH v6 07/16] KVM: make kvm_set_msi_irq() public

Make kvm_set_msi_irq() public, we can use this function outside. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 4 arch/x86/kvm/irq_comm.c | 4 ++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm

[PATCH v6 08/16] vfio: Select IRQ_BYPASS_MANAGER for vfio PCI devices

Enable irq bypass manager for vfio PCI devices. Signed-off-by: Feng Wu --- drivers/vfio/pci/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index 579d83b..02912f1 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig

[PATCH v6 09/16] vfio: Register/unregister irq_bypass_producer

ARN_ON() when irq_bypass_register_producer fails - Remove optional dummy callbacks for irq producer Signed-off-by: Feng Wu --- drivers/vfio/pci/vfio_pci_intrs.c | 9 + drivers/vfio/pci/vfio_pci_private.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/dri

[PATCH v6 14/16] KVM: Update Posted-Interrupts Descriptor when vCPU is blocked

This patch updates the Posted-Interrupts Descriptor when vCPU is blocked. pre-block: - Add the vCPU to the blocked per-CPU list - Set 'NV' to POSTED_INTR_WAKEUP_VECTOR post-block: - Remove the vCPU from the per-CPU list Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h |

[PATCH v6 04/16] KVM: Get Posted-Interrupts descriptor address from 'struct kvm_vcpu'

Define an interface to get PI descriptor address from the vCPU structure. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/vmx.c | 11 +++ 2 files changed, 13 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm

[PATCH v6 05/16] KVM: Add interfaces to control PI outside vmx

This patch adds pi_clear_sn and pi_set_sn to struct kvm_x86_ops, so we can set/clear SN outside vmx. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 3 +++ arch/x86/kvm/vmx.c | 13 + 2 files changed, 16 insertions(+) diff --git a/arch/x86/include/asm

[PATCH v6 00/16] Add VT-d Posted-Interrupts support

, then revise some irq logic based on the new hierarchy irqdomain patches provided by Jiang Liu Feng Wu (16): KVM: Extend struct pi_desc for VT-d Posted-Interrupts KVM: Add some helper functions for Posted-Interrupts KVM: Define a new interface kvm_intr_is_single_vcpu() KVM: Get Po

[PATCH v6 06/16] KVM: Make struct kvm_irq_routing_table accessible

Move struct kvm_irq_routing_table from irqchip.c to kvm_host.h, so we can use it outside of irqchip.c. Signed-off-by: Feng Wu --- include/linux/kvm_host.h | 14 ++ virt/kvm/irqchip.c | 10 -- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/include

[PATCH v6 03/16] KVM: Define a new interface kvm_intr_is_single_vcpu()

single-CPU, we can use PI to deliver the interrupts to it. Full functionality of lowest-priority support will be added later. Signed-off-by: Feng Wu --- arch/x86/include/asm/kvm_host.h | 3 +++ arch/x86/kvm/irq_comm.c | 24 2 files changed, 27 insertions

[PATCH v6 01/16] KVM: Extend struct pi_desc for VT-d Posted-Interrupts

Extend struct pi_desc for VT-d Posted-Interrupts. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 20 ++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 83b7b5c..271dd70 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86

[PATCH v6 02/16] KVM: Add some helper functions for Posted-Interrupts

This patch adds some helper functions to manipulate the Posted-Interrupts Descriptor. Signed-off-by: Feng Wu --- arch/x86/kvm/vmx.c | 26 ++ 1 file changed, 26 insertions(+) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 271dd70..316f9bf 100644 --- a/arch

[v10 08/10] iommu, x86: Setup Posted-Interrupts capability for Intel iommu

Set Posted-Interrupts capability for Intel iommu when Interrupt Remapping is enabled, clear it when disabled. Signed-off-by: Feng Wu Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel --- drivers/iommu/intel_irq_remapping.c | 30 ++ drivers/iommu/irq_remapping.c

[v10 09/10] iommu, x86: Provide irq_remapping_cap() interface

Add a new interface irq_remapping_cap() to detect whether irq remapping supports new features, such as VT-d Posted-Interrupts. Export the function, so that KVM code can check this and use this mechanism properly. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Reviewed-by: Thomas Gleixner Acked

[v10 10/10] iommu, x86: Properly handle posted interrupts for IOMMU hotplug

Return error when inserting a new IOMMU which doesn't support posted interrupts if posted interrupts are already enabled. Signed-off-by: Feng Wu Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel --- drivers/iommu/intel_irq_remapping.c | 3 +++ 1 file changed, 3 insertions(+) diff --

[v10 06/10] iommu, x86: Avoid migrating VT-d posted interrupts

writing the table entry. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel --- drivers/iommu/intel_irq_remapping.c | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iommu

[v10 07/10] iommu, x86: Add cap_pi_support() to detect VT-d PI capability

Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel --- include/linux/intel-iommu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux

[v10 02/10] iommu: dmar: Extend struct irte for VT-d Posted-Interrupts

Joerg Roedel Signed-off-by: Feng Wu --- include/linux/dmar.h | 70 +--- 1 file changed, 55 insertions(+), 15 deletions(-) diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 8473756..0dbcabc 100644 --- a/include/linux/dmar.h +++ b/include/

[v10 04/10] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip

Interrupt chip callback to set the VCPU affinity for posted interrupts. [ tglx: Use the helper function to copy from the remap irte instead of open coding it. Massage the comment as well ] Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse Reviewed-by: Thomas

[v10 05/10] iommu, x86: Save the mode (posted or remapped) of an IRTE

Add a new field to struct irq_2_iommu, which captures whether the associated IRTE is in posted mode or remapped mode. We update this field when the IRTE is written into the table. Suggested-by: Thomas Gleixner Signed-off-by: Feng Wu Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel

[v10 00/10] Add VT-d Posted-Interrupts support - IOMMU part

or VT-d Posted-Interrupts, combine remapped and posted mode into one irte structure. v4->v5: * Abstract modify_irte() to accept two format of irte. v3->v4: * Change capability to a int variant flags instead of a function call. * Add hotplug case for VT-d PI. Feng Wu (8): iommu:

[v10 01/10] iommu: Add new member capability to struct irq_remap_ops

Add a new member 'capability' to struct irq_remap_ops for storing information about available capabilities such as VT-d Posted-Interrupts. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Reviewed-by: Thomas Gleixner Acked-by: Joerg Roedel --- arch/x86/include/asm/irq_remap

[v10 03/10] iommu: dmar: Provide helper to copy shared irte fields

From: Thomas Gleixner Instead of open coding, provide a helper function to copy the shared irte fields. Signed-off-by: Thomas Gleixner --- include/linux/dmar.h | 12 1 file changed, 12 insertions(+) diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 0dbcabc..e9bc929 1

[v9 9/9] iommu, x86: Properly handler PI for IOMMU hotplug

Return error when inserting a new IOMMU which doesn't support PI if PI is currently in use. Signed-off-by: Feng Wu --- drivers/iommu/intel_irq_remapping.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c

[v9 8/9] iommu, x86: define irq_remapping_cap()

This patch adds a new interface irq_remapping_cap() to detect whether irq remapping supports new features, such as VT-d Posted-Interrupts. We export this function out, so that KVM code can check this and use this mechanism properly. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu --- arch/x86

[v9 7/9] iommu, x86: Setup Posted-Interrupts capability for Intel iommu

Set Posted-Interrupts capability for Intel iommu when IR is enabled, clear it when IR is disabled. Signed-off-by: Feng Wu --- drivers/iommu/intel_irq_remapping.c | 30 ++ drivers/iommu/irq_remapping.c | 2 ++ drivers/iommu/irq_remapping.h | 3 +++ 3

[v9 5/9] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts

vCPU scheduling. However, we still update the cached irte here, which can be used when changing back to remapping mode. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- drivers/iommu/intel_irq_remapping.c | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff

[v9 2/9] iommu: dmar: Extend struct irte for VT-d Posted-Interrupts

ff-by: Feng Wu --- include/linux/dmar.h | 70 +--- 1 file changed, 55 insertions(+), 15 deletions(-) diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 8473756..0dbcabc 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -1

[v9 6/9] iommu, x86: Add cap_pi_support() to detect VT-d PI capability

Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- include/linux/intel-iommu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 0af9b03

[v9 3/9] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip

Implement irq_set_vcpu_affinity for intel_ir_chip. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- arch/x86/include/asm/irq_remapping.h | 5 + drivers/iommu/intel_irq_remapping.c | 43 2 files changed, 48 insertions

[v9 4/9] iommu, x86: Save the mode (posted or remapped) of an IRTE

This patch adds a new field in struct irq_2_iommu, which can capture whether the entry is in posted mode or remapped mode. Signed-off-by: Feng Wu Suggested-by: Thomas Gleixner --- drivers/iommu/intel_irq_remapping.c | 9 + 1 file changed, 9 insertions(+) diff --git a/drivers/iommu

[v9 1/9] iommu: Add new member capability to struct irq_remap_ops

This patch adds a new member capability to struct irq_remap_ops, this new function ops can be used to check whether some features are supported, such as VT-d Posted-Interrupts. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu --- arch/x86/include/asm/irq_remapping.h | 4 drivers/iommu

[v9 0/9] Add VT-d Posted-Interrupts support - IOMMU part

te structure. v4->v5: * Abstract modify_irte() to accept two format of irte. v3->v4: * Change capability to a int variant flags instead of a function call. * Add hotplug case for VT-d PI. Feng Wu (8): iommu: Add new member capability to struct irq_remap_ops iommu, x86: Implement irq_set_vcp

[v8 8/9] iommu, x86: define irq_remapping_cap()

This patch adds a new interface irq_remapping_cap() to detect whether irq remapping supports new features, such as VT-d Posted-Interrupts. We export this function out, so that KVM code can check this and use this mechanism properly. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu --- arch/x86

[v8 9/9] iommu, x86: Properly handler PI for IOMMU hotplug

Return error when inserting a new IOMMU which doesn't support PI if PI is currently in use. Signed-off-by: Feng Wu --- drivers/iommu/intel_irq_remapping.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c

[v8 5/9] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts

vCPU scheduling. However, we still update the cached irte here, which can be used when changing back to remapping mode. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- drivers/iommu/intel_irq_remapping.c | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff

[v8 6/9] iommu, x86: Add cap_pi_support() to detect VT-d PI capability

Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- include/linux/intel-iommu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index 0af9b03

[v8 4/9] iommu, x86: Save the mode (posted or remapped) of an IRTE

This patch adds a new field in struct irq_2_iommu, which can capture whether the entry is in posted mode or remapped mode. Signed-off-by: Feng Wu Suggested-by: Thomas Gleixner --- drivers/iommu/intel_irq_remapping.c | 9 + 1 file changed, 9 insertions(+) diff --git a/drivers/iommu

[v8 7/9] iommu, x86: Setup Posted-Interrupts capability for Intel iommu

Set Posted-Interrupts capability for Intel iommu when IR is enabled, clear it when IR is disabled. Signed-off-by: Feng Wu --- drivers/iommu/intel_irq_remapping.c | 30 ++ drivers/iommu/irq_remapping.c | 2 ++ drivers/iommu/irq_remapping.h | 3 +++ 3

[v8 3/9] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip

Implement irq_set_vcpu_affinity for intel_ir_chip. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- arch/x86/include/asm/irq_remapping.h | 5 drivers/iommu/intel_irq_remapping.c | 46 2 files changed, 51 insertions

[v8 2/9] iommu: dmar: Extend struct irte for VT-d Posted-Interrupts

ff-by: Feng Wu --- include/linux/dmar.h | 70 +--- 1 file changed, 55 insertions(+), 15 deletions(-) diff --git a/include/linux/dmar.h b/include/linux/dmar.h index 8473756..0dbcabc 100644 --- a/include/linux/dmar.h +++ b/include/linux/dmar.h @@ -1

[v8 0/9] Add VT-d Posted-Interrupts support - IOMMU part

ty to a int variant flags instead of a function call. * Add hotplug case for VT-d PI. Feng Wu (8): iommu: Add new member capability to struct irq_remap_ops iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip iommu, x86: Save the mode (posted or remapped) of an IRTE iommu, x86: No

[v8 1/9] iommu: Add new member capability to struct irq_remap_ops

This patch adds a new member capability to struct irq_remap_ops, this new function ops can be used to check whether some features are supported, such as VT-d Posted-Interrupts. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu --- arch/x86/include/asm/irq_remapping.h | 4 drivers/iommu

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