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xen_pt: use separate MemoryListeners for memory and I/O

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Using an unfiltered memory listener will cause regions to be reported
fails multiple times if we have more than two address spaces.  Use a separate
listener for memory and I/O, and utilize MemoryListener's address space
filtering to fix this.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2012-09-30 22:21:11 +02:00
parent d22b096ef6
commit 12b40e471f
2 changed files with 38 additions and 1 deletions
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38
hw/xen_pt.c
View File

@ -59,6 +59,7 @@
#include "xen_backend.h"
#include "xen_pt.h"
#include "range.h"
#include "exec-memory.h"
#define XEN_PT_NR_IRQS (256)
static uint8_t xen_pt_mapped_machine_irq[XEN_PT_NR_IRQS] = {0};
@ -624,6 +625,22 @@ static void xen_pt_region_del(MemoryListener *l, MemoryRegionSection *sec)
xen_pt_region_update(s, sec, false);
}
static void xen_pt_io_region_add(MemoryListener *l, MemoryRegionSection *sec)
{
XenPCIPassthroughState *s = container_of(l, XenPCIPassthroughState,
io_listener);
xen_pt_region_update(s, sec, true);
}
static void xen_pt_io_region_del(MemoryListener *l, MemoryRegionSection *sec)
{
XenPCIPassthroughState *s = container_of(l, XenPCIPassthroughState,
io_listener);
xen_pt_region_update(s, sec, false);
}
static void xen_pt_region_nop(MemoryListener *l, MemoryRegionSection *s)
{
}
@ -657,6 +674,22 @@ static const MemoryListener xen_pt_memory_listener = {
.priority = 10,
};
static const MemoryListener xen_pt_io_listener = {
.begin = xen_pt_begin,
.commit = xen_pt_commit,
.region_add = xen_pt_io_region_add,
.region_nop = xen_pt_region_nop,
.region_del = xen_pt_io_region_del,
.log_start = xen_pt_log_fns,
.log_stop = xen_pt_log_fns,
.log_sync = xen_pt_log_fns,
.log_global_start = xen_pt_log_global_fns,
.log_global_stop = xen_pt_log_global_fns,
.eventfd_add = xen_pt_eventfd_fns,
.eventfd_del = xen_pt_eventfd_fns,
.priority = 10,
};
/* init */
static int xen_pt_initfn(PCIDevice *d)
@ -694,6 +727,7 @@ static int xen_pt_initfn(PCIDevice *d)
}
s->memory_listener = xen_pt_memory_listener;
s->io_listener = xen_pt_io_listener;
/* Handle real device's MMIO/PIO BARs */
xen_pt_register_regions(s);
@ -760,7 +794,8 @@ static int xen_pt_initfn(PCIDevice *d)
}
out:
memory_listener_register(&s->memory_listener, NULL);
memory_listener_register(&s->memory_listener, get_system_memory());
memory_listener_register(&s->io_listener, get_system_io());
XEN_PT_LOG(d, "Real physical device %02x:%02x.%d registered successfuly!\n",
bus, slot, func);
@ -815,6 +850,7 @@ static void xen_pt_unregister_device(PCIDevice *d)
xen_pt_unregister_regions(s);
memory_listener_unregister(&s->memory_listener);
memory_listener_unregister(&s->io_listener);
xen_host_pci_device_put(&s->real_device);
}

1
hw/xen_pt.h
View File

@ -209,6 +209,7 @@ struct XenPCIPassthroughState {
MemoryRegion rom;
MemoryListener memory_listener;
MemoryListener io_listener;
};
int xen_pt_config_init(XenPCIPassthroughState *s);