aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--lib/libvmmapi/vmmapi.c16
-rw-r--r--lib/libvmmapi/vmmapi.h1
-rw-r--r--sys/amd64/include/vmm_dev.h3
-rw-r--r--sys/amd64/vmm/io/ppt.c23
-rw-r--r--sys/amd64/vmm/io/ppt.h1
-rw-r--r--sys/amd64/vmm/vmm_dev.c5
-rw-r--r--usr.sbin/bhyve/pci_passthru.c5
7 files changed, 53 insertions, 1 deletions
diff --git a/lib/libvmmapi/vmmapi.c b/lib/libvmmapi/vmmapi.c
index 3a791908427d..b36ad1c84423 100644
--- a/lib/libvmmapi/vmmapi.c
+++ b/lib/libvmmapi/vmmapi.c
@@ -1017,6 +1017,19 @@ vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func,
return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix);
}
+int
+vm_disable_pptdev_msix(struct vmctx *ctx, int bus, int slot, int func)
+{
+ struct vm_pptdev ppt;
+
+ bzero(&ppt, sizeof(ppt));
+ ppt.bus = bus;
+ ppt.slot = slot;
+ ppt.func = func;
+
+ return ioctl(ctx->fd, VM_PPTDEV_DISABLE_MSIX, &ppt);
+}
+
uint64_t *
vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv,
int *ret_entries)
@@ -1641,7 +1654,8 @@ vm_get_ioctls(size_t *len)
VM_ISA_DEASSERT_IRQ, VM_ISA_PULSE_IRQ, VM_ISA_SET_IRQ_TRIGGER,
VM_SET_CAPABILITY, VM_GET_CAPABILITY, VM_BIND_PPTDEV,
VM_UNBIND_PPTDEV, VM_MAP_PPTDEV_MMIO, VM_PPTDEV_MSI,
- VM_PPTDEV_MSIX, VM_INJECT_NMI, VM_STATS, VM_STAT_DESC,
+ VM_PPTDEV_MSIX, VM_PPTDEV_DISABLE_MSIX,
+ VM_INJECT_NMI, VM_STATS, VM_STAT_DESC,
VM_SET_X2APIC_STATE, VM_GET_X2APIC_STATE,
VM_GET_HPET_CAPABILITIES, VM_GET_GPA_PMAP, VM_GLA2GPA,
VM_GLA2GPA_NOFAULT,
diff --git a/lib/libvmmapi/vmmapi.h b/lib/libvmmapi/vmmapi.h
index 86a58280f34a..2fe2bf7906a4 100644
--- a/lib/libvmmapi/vmmapi.h
+++ b/lib/libvmmapi/vmmapi.h
@@ -181,6 +181,7 @@ int vm_setup_pptdev_msi(struct vmctx *ctx, int vcpu, int bus, int slot,
int vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot,
int func, int idx, uint64_t addr, uint64_t msg,
uint32_t vector_control);
+int vm_disable_pptdev_msix(struct vmctx *ctx, int bus, int slot, int func);
int vm_get_intinfo(struct vmctx *ctx, int vcpu, uint64_t *i1, uint64_t *i2);
int vm_set_intinfo(struct vmctx *ctx, int vcpu, uint64_t exit_intinfo);
diff --git a/sys/amd64/include/vmm_dev.h b/sys/amd64/include/vmm_dev.h
index 28ecd339bf86..e4204e759bf6 100644
--- a/sys/amd64/include/vmm_dev.h
+++ b/sys/amd64/include/vmm_dev.h
@@ -301,6 +301,7 @@ enum {
IOCNUM_MAP_PPTDEV_MMIO = 42,
IOCNUM_PPTDEV_MSI = 43,
IOCNUM_PPTDEV_MSIX = 44,
+ IOCNUM_PPTDEV_DISABLE_MSIX = 45,
/* statistics */
IOCNUM_VM_STATS = 50,
@@ -413,6 +414,8 @@ enum {
_IOW('v', IOCNUM_PPTDEV_MSI, struct vm_pptdev_msi)
#define VM_PPTDEV_MSIX \
_IOW('v', IOCNUM_PPTDEV_MSIX, struct vm_pptdev_msix)
+#define VM_PPTDEV_DISABLE_MSIX \
+ _IOW('v', IOCNUM_PPTDEV_DISABLE_MSIX, struct vm_pptdev)
#define VM_INJECT_NMI \
_IOW('v', IOCNUM_INJECT_NMI, struct vm_nmi)
#define VM_STATS \
diff --git a/sys/amd64/vmm/io/ppt.c b/sys/amd64/vmm/io/ppt.c
index 547a14e6464e..476dfcd91a07 100644
--- a/sys/amd64/vmm/io/ppt.c
+++ b/sys/amd64/vmm/io/ppt.c
@@ -518,6 +518,10 @@ ppt_setup_msi(struct vm *vm, int vcpu, int bus, int slot, int func,
if (ppt->vm != vm) /* Make sure we own this device */
return (EBUSY);
+ /* Reject attempts to enable MSI while MSI-X is active. */
+ if (ppt->msix.num_msgs != 0 && numvec != 0)
+ return (EBUSY);
+
/* Free any allocated resources */
ppt_teardown_msi(ppt);
@@ -607,6 +611,10 @@ ppt_setup_msix(struct vm *vm, int vcpu, int bus, int slot, int func,
if (ppt->vm != vm) /* Make sure we own this device */
return (EBUSY);
+ /* Reject attempts to enable MSI-X while MSI is active. */
+ if (ppt->msi.num_msgs != 0)
+ return (EBUSY);
+
dinfo = device_get_ivars(ppt->dev);
if (!dinfo)
return (ENXIO);
@@ -700,3 +708,18 @@ ppt_setup_msix(struct vm *vm, int vcpu, int bus, int slot, int func,
return (0);
}
+
+int
+ppt_disable_msix(struct vm *vm, int bus, int slot, int func)
+{
+ struct pptdev *ppt;
+
+ ppt = ppt_find(bus, slot, func);
+ if (ppt == NULL)
+ return (ENOENT);
+ if (ppt->vm != vm) /* Make sure we own this device */
+ return (EBUSY);
+
+ ppt_teardown_msix(ppt);
+ return (0);
+}
diff --git a/sys/amd64/vmm/io/ppt.h b/sys/amd64/vmm/io/ppt.h
index df8413031167..223afb343e8c 100644
--- a/sys/amd64/vmm/io/ppt.h
+++ b/sys/amd64/vmm/io/ppt.h
@@ -38,6 +38,7 @@ int ppt_setup_msi(struct vm *vm, int vcpu, int bus, int slot, int func,
uint64_t addr, uint64_t msg, int numvec);
int ppt_setup_msix(struct vm *vm, int vcpu, int bus, int slot, int func,
int idx, uint64_t addr, uint64_t msg, uint32_t vector_control);
+int ppt_disable_msix(struct vm *vm, int bus, int slot, int func);
int ppt_assigned_devices(struct vm *vm);
bool ppt_is_mmio(struct vm *vm, vm_paddr_t gpa);
diff --git a/sys/amd64/vmm/vmm_dev.c b/sys/amd64/vmm/vmm_dev.c
index eafe35bed56c..da8c051016ec 100644
--- a/sys/amd64/vmm/vmm_dev.c
+++ b/sys/amd64/vmm/vmm_dev.c
@@ -514,6 +514,11 @@ vmmdev_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag,
pptmsix->addr, pptmsix->msg,
pptmsix->vector_control);
break;
+ case VM_PPTDEV_DISABLE_MSIX:
+ pptdev = (struct vm_pptdev *)data;
+ error = ppt_disable_msix(sc->vm, pptdev->bus, pptdev->slot,
+ pptdev->func);
+ break;
case VM_MAP_PPTDEV_MMIO:
pptmmio = (struct vm_pptdev_mmio *)data;
error = ppt_map_mmio(sc->vm, pptmmio->bus, pptmmio->slot,
diff --git a/usr.sbin/bhyve/pci_passthru.c b/usr.sbin/bhyve/pci_passthru.c
index 85c2e52188b3..3305a4854812 100644
--- a/usr.sbin/bhyve/pci_passthru.c
+++ b/usr.sbin/bhyve/pci_passthru.c
@@ -869,6 +869,11 @@ passthru_cfgwrite(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
if (error)
err(1, "vm_setup_pptdev_msix");
}
+ } else {
+ error = vm_disable_pptdev_msix(ctx, sc->psc_sel.pc_bus,
+ sc->psc_sel.pc_dev, sc->psc_sel.pc_func);
+ if (error)
+ err(1, "vm_disable_pptdev_msix");
}
return (0);
}
generated by cgit v1.3 (git 2.53.0) at 2026-09-05 14:04:45 +0000