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-rw-r--r--include/hw/xen/xen_common.h125
-rw-r--r--trace-events1
-rw-r--r--xen-hvm.c6
3 files changed, 92 insertions, 40 deletions
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
index 640c31e2c1..bd39287b8f 100644
--- a/include/hw/xen/xen_common.h
+++ b/include/hw/xen/xen_common.h
@@ -107,6 +107,44 @@ static inline int xen_get_vmport_regs_pfn(xc_interface *xc, domid_t dom,
#endif
+static inline int xen_get_default_ioreq_server_info(xc_interface *xc,
+ domid_t dom,
+ xen_pfn_t *ioreq_pfn,
+ xen_pfn_t *bufioreq_pfn,
+ evtchn_port_t
+ *bufioreq_evtchn)
+{
+ unsigned long param;
+ int rc;
+
+ rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
+ if (rc < 0) {
+ fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
+ return -1;
+ }
+
+ *ioreq_pfn = param;
+
+ rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
+ if (rc < 0) {
+ fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
+ return -1;
+ }
+
+ *bufioreq_pfn = param;
+
+ rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
+ &param);
+ if (rc < 0) {
+ fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
+ return -1;
+ }
+
+ *bufioreq_evtchn = param;
+
+ return 0;
+}
+
/* Xen before 4.5 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
@@ -154,10 +192,9 @@ static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
{
}
-static inline int xen_create_ioreq_server(xc_interface *xc, domid_t dom,
- ioservid_t *ioservid)
+static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
+ ioservid_t *ioservid)
{
- return 0;
}
static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
@@ -171,35 +208,8 @@ static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
- unsigned long param;
- int rc;
-
- rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
- if (rc < 0) {
- fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
- return -1;
- }
-
- *ioreq_pfn = param;
-
- rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
- if (rc < 0) {
- fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
- return -1;
- }
-
- *bufioreq_pfn = param;
-
- rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
- &param);
- if (rc < 0) {
- fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
- return -1;
- }
-
- *bufioreq_evtchn = param;
-
- return 0;
+ return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn, bufioreq_pfn,
+ bufioreq_evtchn);
}
static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
@@ -212,6 +222,8 @@ static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
/* Xen 4.5 */
#else
+static bool use_default_ioreq_server;
+
static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
ioservid_t ioservid,
MemoryRegionSection *section)
@@ -220,6 +232,10 @@ static inline void xen_map_memory_section(xc_interface *xc, domid_t dom,
ram_addr_t size = int128_get64(section->size);
hwaddr end_addr = start_addr + size - 1;
+ if (use_default_ioreq_server) {
+ return;
+ }
+
trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
start_addr, end_addr);
@@ -233,6 +249,11 @@ static inline void xen_unmap_memory_section(xc_interface *xc, domid_t dom,
ram_addr_t size = int128_get64(section->size);
hwaddr end_addr = start_addr + size - 1;
+ if (use_default_ioreq_server) {
+ return;
+ }
+
+
trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
start_addr, end_addr);
@@ -246,6 +267,11 @@ static inline void xen_map_io_section(xc_interface *xc, domid_t dom,
ram_addr_t size = int128_get64(section->size);
hwaddr end_addr = start_addr + size - 1;
+ if (use_default_ioreq_server) {
+ return;
+ }
+
+
trace_xen_map_portio_range(ioservid, start_addr, end_addr);
xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
start_addr, end_addr);
@@ -259,6 +285,10 @@ static inline void xen_unmap_io_section(xc_interface *xc, domid_t dom,
ram_addr_t size = int128_get64(section->size);
hwaddr end_addr = start_addr + size - 1;
+ if (use_default_ioreq_server) {
+ return;
+ }
+
trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
start_addr, end_addr);
@@ -268,6 +298,10 @@ static inline void xen_map_pcidev(xc_interface *xc, domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
+ if (use_default_ioreq_server) {
+ return;
+ }
+
trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
@@ -280,6 +314,10 @@ static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
ioservid_t ioservid,
PCIDevice *pci_dev)
{
+ if (use_default_ioreq_server) {
+ return;
+ }
+
trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
@@ -288,22 +326,29 @@ static inline void xen_unmap_pcidev(xc_interface *xc, domid_t dom,
PCI_FUNC(pci_dev->devfn));
}
-static inline int xen_create_ioreq_server(xc_interface *xc, domid_t dom,
- ioservid_t *ioservid)
+static inline void xen_create_ioreq_server(xc_interface *xc, domid_t dom,
+ ioservid_t *ioservid)
{
int rc = xc_hvm_create_ioreq_server(xc, dom, HVM_IOREQSRV_BUFIOREQ_ATOMIC,
ioservid);
if (rc == 0) {
trace_xen_ioreq_server_create(*ioservid);
+ return;
}
- return rc;
+ *ioservid = 0;
+ use_default_ioreq_server = true;
+ trace_xen_default_ioreq_server();
}
static inline void xen_destroy_ioreq_server(xc_interface *xc, domid_t dom,
ioservid_t ioservid)
{
+ if (use_default_ioreq_server) {
+ return;
+ }
+
trace_xen_ioreq_server_destroy(ioservid);
xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
}
@@ -314,6 +359,12 @@ static inline int xen_get_ioreq_server_info(xc_interface *xc, domid_t dom,
xen_pfn_t *bufioreq_pfn,
evtchn_port_t *bufioreq_evtchn)
{
+ if (use_default_ioreq_server) {
+ return xen_get_default_ioreq_server_info(xc, dom, ioreq_pfn,
+ bufioreq_pfn,
+ bufioreq_evtchn);
+ }
+
return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
ioreq_pfn, bufioreq_pfn,
bufioreq_evtchn);
@@ -323,6 +374,10 @@ static inline int xen_set_ioreq_server_state(xc_interface *xc, domid_t dom,
ioservid_t ioservid,
bool enable)
{
+ if (use_default_ioreq_server) {
+ return 0;
+ }
+
trace_xen_ioreq_server_state(ioservid, enable);
return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
}
diff --git a/trace-events b/trace-events
index 52c6a6cccf..616cc52378 100644
--- a/trace-events
+++ b/trace-events
@@ -60,6 +60,7 @@ spice_vmc_event(int event) "spice vmc event %d"
# xen-hvm.c
xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: %#lx, size %#lx"
xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "%#"PRIx64" size %#lx, log_dirty %i"
+xen_default_ioreq_server(void) ""
xen_ioreq_server_create(uint32_t id) "id: %u"
xen_ioreq_server_destroy(uint32_t id) "id: %u"
xen_ioreq_server_state(uint32_t id, bool enable) "id: %u: enable: %i"
diff --git a/xen-hvm.c b/xen-hvm.c
index 3b0343a8e6..2f348edf86 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -1203,11 +1203,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
goto err;
}
- rc = xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
- if (rc < 0) {
- perror("xen: ioreq server create");
- goto err;
- }
+ xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 14:23:14 +0000