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kvm-all: Pass requester ID to MSI routing functions

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Introduce global kvm_msi_use_devid flag plus associated
kvm_msi_devid_required() macro. Passes the device ID,
if needed, while building the MSI route entry. Device IDs are
required by the ARM GICv3 ITS (IRQ remapping function is based on
this information).

Signed-off-by: Pavel Fedin <p.fedin@samsung.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1474616617-366-5-git-send-email-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Pavel Fedin 2016-10-04 13:28:09 +01:00 committed by Peter Maydell
parent 1b20616f26
commit 767a554a0c
3 changed files with 19 additions and 0 deletions
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9
include/sysemu/kvm.h
View File

@ -53,6 +53,7 @@ extern bool kvm_gsi_direct_mapping;
extern bool kvm_readonly_mem_allowed;
extern bool kvm_direct_msi_allowed;
extern bool kvm_ioeventfd_any_length_allowed;
extern bool kvm_msi_use_devid;
#if defined CONFIG_KVM || !defined NEED_CPU_H
#define kvm_enabled() (kvm_allowed)
@ -169,6 +170,13 @@ extern bool kvm_ioeventfd_any_length_allowed;
*/
#define kvm_ioeventfd_any_length_enabled() (kvm_ioeventfd_any_length_allowed)
/**
* kvm_msi_devid_required:
* Returns: true if KVM requires a device id to be provided while
* defining an MSI routing entry.
*/
#define kvm_msi_devid_required() (kvm_msi_use_devid)
#else
#define kvm_enabled() (0)
#define kvm_irqchip_in_kernel() (false)
@ -184,6 +192,7 @@ extern bool kvm_ioeventfd_any_length_allowed;
#define kvm_readonly_mem_enabled() (false)
#define kvm_direct_msi_enabled() (false)
#define kvm_ioeventfd_any_length_enabled() (false)
#define kvm_msi_devid_required() (false)
#endif
struct kvm_run;

9
kvm-all.c
View File

@ -119,6 +119,7 @@ bool kvm_readonly_mem_allowed;
bool kvm_vm_attributes_allowed;
bool kvm_direct_msi_allowed;
bool kvm_ioeventfd_any_length_allowed;
bool kvm_msi_use_devid;
static const KVMCapabilityInfo kvm_required_capabilites[] = {
KVM_CAP_INFO(USER_MEMORY),
@ -1275,6 +1276,10 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
kroute.u.msi.address_lo = (uint32_t)msg.address;
kroute.u.msi.address_hi = msg.address >> 32;
kroute.u.msi.data = le32_to_cpu(msg.data);
if (kvm_msi_devid_required()) {
kroute.flags = KVM_MSI_VALID_DEVID;
kroute.u.msi.devid = pci_requester_id(dev);
}
if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data, dev)) {
kvm_irqchip_release_virq(s, virq);
return -EINVAL;
@ -1308,6 +1313,10 @@ int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
kroute.u.msi.address_lo = (uint32_t)msg.address;
kroute.u.msi.address_hi = msg.address >> 32;
kroute.u.msi.data = le32_to_cpu(msg.data);
if (kvm_msi_devid_required()) {
kroute.flags = KVM_MSI_VALID_DEVID;
kroute.u.msi.devid = pci_requester_id(dev);
}
if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data, dev)) {
return -EINVAL;
}

1
kvm-stub.c
View File

@ -31,6 +31,7 @@ bool kvm_gsi_direct_mapping;
bool kvm_allowed;
bool kvm_readonly_mem_allowed;
bool kvm_ioeventfd_any_length_allowed;
bool kvm_msi_use_devid;
int kvm_destroy_vcpu(CPUState *cpu)
{