search for: vgic

...hanges in v2: - pass virq by value to gic_irq_eoi; - EOI the interrupt without any spin locks held and with interrupt enabled. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> CC: keir@xen.org --- xen/arch/arm/gic.c | 24 +++++++++++++++++++++++- xen/arch/arm/vgic.c | 7 ++++++- xen/include/asm-arm/domain.h | 2 ++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c index 61de230..2674f84 100644 --- a/xen/arch/arm/gic.c +++ b/xen/arch/arm/gic.c @@ -723,6 +723,12 @@ int gicv_setup(struct domai...

...uest WFI, block the guest VCPU unless it has pending interrupts. Awake the guest vcpu when a new interrupt for it arrrives. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> --- xen/arch/arm/domain_build.c | 2 +- xen/arch/arm/traps.c | 6 ++++++ xen/arch/arm/vgic.c | 4 +++- 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 1e9776d..aa0f191 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -331,7 +331,7 @@ int construct_dom0(struct domain *d)...

If the vgic needs to inject a virtual irq into the guest, but no free LR registers are available, add the irq to a list and return. Whenever an LR register becomes available we add the queued irq to it and remove it from the list. We use the gic lock to protect the list and the bitmask. Signed-off-by: Stefano...

George has release acked all of these. Otherwise mostly minor updates this time around. Summary: A == acked, M == modified A xen: arm64: Add 8250 earlyprintk support A xen: arm64: Add Basic Platform support for APM X-Gene Storm. A xen: arm64: Add APM implementor id to processor implementers. M xen: arm: add a quirk to handle platforms with unusual GIC layout A xen: arm: allow platform

...harp throughput reduction. I also checked that the flag for usb_hcd_irq is not disabled in Linux, and saw no reason for not calling usb_hcd_irq. This is quite a odd behavior since I can not see this happening when I run native linux on top of Arndale, so I guess it is somehow related to xen (maybe vgic delivery). I would like to know if there is any tracing or debugging helpers (for vgic and evt_chn) in Xen or Linux to see further what triggers this behavior. I''m a bit tired of using printk all over the places :) Here goes the branch that I''m using: xen: git://xenbits.xen.org...

(moving to xen-devel, xen-arm is for the older PV ARM port) On Tue, 2013-06-25 at 23:59 +0000, Eric Trudeau wrote: > Hi, I am trying to build the XEN tools for our port of XEN to our > Cortex A15-based platform. > > I am using the repo at git://xenbits.xenproject.org/xen.git to > cross-compile the tools into our rootfs. Which branch/changeset are you using? I've heard that

.../arm: support for guest SGI xen/arm: support vcpu_op hypercalls xen: move VCPUOP_register_vcpu_info to common code xen/arch/arm/domain.c | 66 ++++++++++++++++++++++++ xen/arch/arm/mm.c | 10 ++++ xen/arch/arm/traps.c | 42 ++++++++++++++++ xen/arch/arm/vgic.c | 53 ++++++++++++++++++-- xen/arch/x86/domain.c | 113 ------------------------------------------ xen/common/domain.c | 110 ++++++++++++++++++++++++++++++++++++++++ xen/include/asm-arm/domain.h | 4 ++ xen/include/asm-arm/gic.h | 3 + xen/include/asm-x86/do...

...q(&gic.lock); /* Disable until next VCPU scheduled */ GICH[GICH_HCR] = 0; isb(); @@ -480,7 +478,7 @@ void gic_set_guest_irq(struct vcpu *v, unsigned int virtual_irq, spin_lock_irqsave(&gic.lock, flags); - if ( v->is_running && list_empty(&v->arch.vgic.lr_pending) ) + if ( v == current && list_empty(&v->arch.vgic.lr_pending) ) { i = find_first_zero_bit(&this_cpu(lr_mask), nr_lrs); if (i < nr_lrs) { -- 1.7.2.5

...;'t taking the guest mode (CPSR) into account and would always access the user version of the registers. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> --- v2: Fix r8 vs r8_fiq thinko. --- xen/arch/arm/traps.c | 62 ++++++++++++++++++++++++++++++++++++++++++- xen/arch/arm/vgic.c | 4 +- xen/arch/arm/vpl011.c | 4 +- xen/arch/arm/vtimer.c | 7 +++-- xen/include/asm-arm/regs.h | 6 ++++ 5 files changed, 74 insertions(+), 9 deletions(-) diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c index bddd7d4..f42e4e9 100644 --- a/xen/arch/arm/tra...

Biggest change is to switch the new DTB node to /xen-core-devices instead of /xen at Stefano''s request. I also dropped the few patches title HACK etc which weren''t supposed to be there and fixed up some bits and pieces which folks commented on. George, WRT the freeze I think this is functionality which we cannot ship Xen 4.4 without. The impact is entirely constrained to the

...de >> +#include >> >> long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE_PARAM(void) arg) >> >> @@ -65,3 +67,229 @@ long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE_PARAM(void) arg) >> >> return rc; >> } >> + >> +static void vgic_irq_rank_save(struct vgic_rank *ext, >> + struct vgic_irq_rank *rank) >> +{ >> + spin_lock(&rank->lock); >> + /* Some of VGIC registers are not used yet, it is for a future usage */ >> + /* IENABLE, IACTIVE, IPEND, PENDSGI...

> From: Jean-Philippe Brucker [mailto:jean-philippe.brucker at arm.com] > Sent: Wednesday, February 14, 2018 10:54 PM > > The virtio IOMMU is a para-virtualized device, allowing to send IOMMU > requests such as map/unmap over virtio-mmio transport without > emulating > page tables. This implementation handles ATTACH, DETACH, MAP and > UNMAP > requests. > > The

> From: Jean-Philippe Brucker [mailto:jean-philippe.brucker at arm.com] > Sent: Wednesday, February 14, 2018 10:54 PM > > The virtio IOMMU is a para-virtualized device, allowing to send IOMMU > requests such as map/unmap over virtio-mmio transport without > emulating > page tables. This implementation handles ATTACH, DETACH, MAP and > UNMAP > requests. > > The

...for ( i = 0; i < nr_lrs; i++ ) + printk(" HW_LR[%d]=%x\n", i, GICH[GICH_LR + i]); + } else { + for ( i = 0; i < nr_lrs; i++ ) + printk(" VCPU_LR[%d]=%x\n", i, v->arch.gic_lr[i]); + } + + list_for_each_entry ( p, &v->arch.vgic.inflight_irqs, inflight ) + { + printk("Inflight irq=%d\n", p->irq); + } + + list_for_each_entry( p, &v->arch.vgic.lr_pending, lr_queue ) + { + printk("Pending irq=%d\n", p->irq); + } + +} + void __cpuinit init_maintenance_interrupt(vo...

...he doorbell * MSI from passthrough device bypass IOMMU * MSI from emulated device bypass virtio-iommu For software MSI doorbell (most ARM): * Host kernel reports to Qemu as IOMMU_RESV_SW_MSI * Qemu report to guest as VIRTIO_IOMMU_RESV_MEM_T_RESERVED * Guest takes the range as IOMMU_RESV_RESERVED * vGIC requests to map 'GPA of the virtual doorbell' * a map request (IOVA->GPA) sent on endpoint * Qemu maintains the mapping in MAP database * but no VFIO_MAP request since it's purely virtual * GIC requests to map 'HPA of the physical doorbell' * e.g. triggered by VFIO enable m...

Hi Kevin, Thanks for the comments On 19/03/18 10:03, Tian, Kevin wrote: > BYPASS feature bit is not covered in "2.3.1/2.3.2/2.3.3"". Is it > intended? In my opinion BYPASS is a bit different from the other features: while the others are needed for correctness, this one is optional and even if the guest supports BYPASS, it should be allowed not to accept it. For security

Hi Kevin, Thanks for the comments On 19/03/18 10:03, Tian, Kevin wrote: > BYPASS feature bit is not covered in "2.3.1/2.3.2/2.3.3"". Is it > intended? In my opinion BYPASS is a bit different from the other features: while the others are needed for correctness, this one is optional and even if the guest supports BYPASS, it should be allowed not to accept it. For security

...x86/kvm/lapic.c | 15 ++- arch/x86/kvm/lapic.h | 5 + arch/x86/kvm/x86.c | 4 + drivers/hv/hyperv_vmbus.h | 5 - include/linux/kvm_host.h | 12 ++ include/uapi/linux/hyperv.h | 12 ++ include/uapi/linux/kvm.h | 8 ++ virt/kvm/arm/vgic.c | 18 +++ virt/kvm/eventfd.c | 35 +++++- virt/kvm/irqchip.c | 24 +++- 16 files changed, 475 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c index 6249cdc..01e7fb4 100644 --- a/arch/powerpc/kvm/mpic.c +++ b/a...

...driver for CoreLink GIC-400 Generic Interrupt Controller arm: mmio handlers arm: irq arm: mm and p2m arm: pl011 UART driver arm: early setup code arm: shutdown, smp and smpboot arm: driver for the generic timer for ARMv7 arm: trap handlers arm: vgic emulation arm: vtimer arm: makefiles config/arm.mk | 18 + tools/libxc/xc_dom_elfloader.c | 8 +- tools/libxc/xc_hvm_build.c | 5 +- xen/arch/arm/Makefile | 76 ++++ xen/arch/arm/Rules.mk | 29 +...

...driver for CoreLink GIC-400 Generic Interrupt Controller arm: mmio handlers arm: irq arm: mm and p2m arm: pl011 UART driver arm: early setup code arm: shutdown, smp and smpboot arm: driver for the generic timer for ARMv7 arm: trap handlers arm: vgic emulation arm: vtimer config/arm.mk | 18 + xen/arch/arm/Makefile | 76 +++ xen/arch/arm/Rules.mk | 29 ++ xen/arch/arm/asm-offsets.c | 76 +++ xen/arch/arm/domain.c...