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-rw-r--r--hw/char/xen_console.c8
-rw-r--r--hw/display/xenfb.c17
-rw-r--r--hw/xen/xen_backend.c3
-rw-r--r--include/hw/xen/xen_backend.h1
-rw-r--r--include/hw/xen/xen_common.h25
-rw-r--r--xen-common.c6
-rw-r--r--xen-hvm.c12
-rw-r--r--xen-mapcache.c6
8 files changed, 56 insertions, 22 deletions
diff --git a/hw/char/xen_console.c b/hw/char/xen_console.c
index 3e8a57b4f7..b92d0c6dd2 100644
--- a/hw/char/xen_console.c
+++ b/hw/char/xen_console.c
@@ -229,9 +229,9 @@ static int con_initialise(struct XenDevice *xendev)
if (!xendev->dev) {
xen_pfn_t mfn = con->ring_ref;
- con->sring = xc_map_foreign_pages(xen_xc, con->xendev.dom,
- PROT_READ|PROT_WRITE,
- &mfn, 1);
+ con->sring = xenforeignmemory_map(xen_fmem, con->xendev.dom,
+ PROT_READ|PROT_WRITE,
+ 1, &mfn, NULL);
} else {
con->sring = xengnttab_map_grant_ref(xendev->gnttabdev, con->xendev.dom,
con->ring_ref,
@@ -273,7 +273,7 @@ static void con_disconnect(struct XenDevice *xendev)
if (con->sring) {
if (!xendev->dev) {
- munmap(con->sring, XC_PAGE_SIZE);
+ xenforeignmemory_unmap(xen_fmem, con->sring, 1);
} else {
xengnttab_unmap(xendev->gnttabdev, con->sring, 1);
}
diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c
index aa38803aa9..1676660e4e 100644
--- a/hw/display/xenfb.c
+++ b/hw/display/xenfb.c
@@ -106,8 +106,8 @@ static int common_bind(struct common *c)
if (xenstore_read_fe_int(&c->xendev, "event-channel", &c->xendev.remote_port) == -1)
return -1;
- c->page = xc_map_foreign_pages(xen_xc, c->xendev.dom,
- PROT_READ | PROT_WRITE, &mfn, 1);
+ c->page = xenforeignmemory_map(xen_fmem, c->xendev.dom,
+ PROT_READ | PROT_WRITE, 1, &mfn, NULL);
if (c->page == NULL)
return -1;
@@ -122,7 +122,7 @@ static void common_unbind(struct common *c)
{
xen_be_unbind_evtchn(&c->xendev);
if (c->page) {
- munmap(c->page, XC_PAGE_SIZE);
+ xenforeignmemory_unmap(xen_fmem, c->page, 1);
c->page = NULL;
}
}
@@ -495,15 +495,15 @@ static int xenfb_map_fb(struct XenFB *xenfb)
fbmfns = g_malloc0(sizeof(xen_pfn_t) * xenfb->fbpages);
xenfb_copy_mfns(mode, n_fbdirs, pgmfns, pd);
- map = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
- PROT_READ, pgmfns, n_fbdirs);
+ map = xenforeignmemory_map(xen_fmem, xenfb->c.xendev.dom,
+ PROT_READ, n_fbdirs, pgmfns, NULL);
if (map == NULL)
goto out;
xenfb_copy_mfns(mode, xenfb->fbpages, fbmfns, map);
- munmap(map, n_fbdirs * XC_PAGE_SIZE);
+ xenforeignmemory_unmap(xen_fmem, map, n_fbdirs);
- xenfb->pixels = xc_map_foreign_pages(xen_xc, xenfb->c.xendev.dom,
- PROT_READ, fbmfns, xenfb->fbpages);
+ xenfb->pixels = xenforeignmemory_map(xen_fmem, xenfb->c.xendev.dom,
+ PROT_READ, xenfb->fbpages, fbmfns, NULL);
if (xenfb->pixels == NULL)
goto out;
@@ -913,6 +913,7 @@ static void fb_disconnect(struct XenDevice *xendev)
* Replacing the framebuffer with anonymous shared memory
* instead. This releases the guest pages and keeps qemu happy.
*/
+ xenforeignmemory_unmap(xen_fmem, fb->pixels, fb->fbpages);
fb->pixels = mmap(fb->pixels, fb->fbpages * XC_PAGE_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON,
-1, 0);
diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
index 966e34f3cb..caa459ca3e 100644
--- a/hw/xen/xen_backend.c
+++ b/hw/xen/xen_backend.c
@@ -45,6 +45,7 @@
/* public */
XenXC xen_xc = XC_HANDLER_INITIAL_VALUE;
+xenforeignmemory_handle *xen_fmem = NULL;
struct xs_handle *xenstore = NULL;
const char *xen_protocol;
@@ -717,7 +718,7 @@ int xen_be_init(void)
qemu_set_fd_handler(xs_fileno(xenstore), xenstore_update, NULL, NULL);
- if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
+ if (xen_xc == XC_HANDLER_INITIAL_VALUE || xen_fmem == NULL) {
/* Check if xen_init() have been called */
goto err;
}
diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
index 8e8857b155..e0d52ee44f 100644
--- a/include/hw/xen/xen_backend.h
+++ b/include/hw/xen/xen_backend.h
@@ -57,6 +57,7 @@ struct XenDevice {
/* variables */
extern XenXC xen_xc;
+extern xenforeignmemory_handle *xen_fmem;
extern struct xs_handle *xenstore;
extern const char *xen_protocol;
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
index 8f38310426..95275b34c4 100644
--- a/include/hw/xen/xen_common.h
+++ b/include/hw/xen/xen_common.h
@@ -41,6 +41,7 @@ static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
typedef int XenXC;
typedef int xenevtchn_handle;
typedef int xengnttab_handle;
+typedef int xenforeignmemory_handle;
# define XC_INTERFACE_FMT "%i"
# define XC_HANDLER_INITIAL_VALUE -1
@@ -104,6 +105,8 @@ static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
return xc_interface_open();
}
+/* See below for xenforeignmemory_* APIs */
+
static inline int xc_fd(int xen_xc)
{
return xen_xc;
@@ -149,6 +152,7 @@ static inline void xs_close(struct xs_handle *xsh)
#else
typedef xc_interface *XenXC;
+typedef xc_interface *xenforeignmemory_handle;
typedef xc_evtchn xenevtchn_handle;
typedef xc_gnttab xengnttab_handle;
@@ -178,6 +182,8 @@ static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
return xc_interface_open(logger, dombuild_logger, open_flags);
}
+/* See below for xenforeignmemory_* APIs */
+
/* FIXME There is now way to have the xen fd */
static inline int xc_fd(xc_interface *xen_xc)
{
@@ -501,4 +507,23 @@ static inline int xen_domain_create(XenXC xc, uint32_t ssidref,
}
#endif
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 471
+
+#define xenforeignmemory_open(l, f) &xen_xc
+
+static inline void *xenforeignmemory_map(XenXC *h, uint32_t dom,
+ int prot, size_t pages,
+ const xen_pfn_t arr[/*pages*/],
+ int err[/*pages*/])
+{
+ if (err)
+ return xc_map_foreign_bulk(*h, dom, prot, arr, err, pages);
+ else
+ return xc_map_foreign_pages(*h, dom, prot, arr, pages);
+}
+
+#define xenforeignmemory_unmap(h, p, s) munmap(p, s * XC_PAGE_SIZE)
+
+#endif
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/xen-common.c b/xen-common.c
index 0dcdbc39f4..6cd2959e21 100644
--- a/xen-common.c
+++ b/xen-common.c
@@ -118,6 +118,12 @@ static int xen_init(MachineState *ms)
xen_be_printf(NULL, 0, "can't open xen interface\n");
return -1;
}
+ xen_fmem = xenforeignmemory_open(0, 0);
+ if (xen_fmem == NULL) {
+ xen_be_printf(NULL, 0, "can't open xen fmem interface\n");
+ xc_interface_close(xen_xc);
+ return -1;
+ }
qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
global_state_set_optional();
diff --git a/xen-hvm.c b/xen-hvm.c
index 878ae0a03d..590f66dcf8 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -1242,9 +1242,9 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
- state->shared_page = xc_map_foreign_pages(xen_xc, xen_domid,
+ state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
PROT_READ|PROT_WRITE,
- &ioreq_pfn, 1);
+ 1, &ioreq_pfn, NULL);
if (state->shared_page == NULL) {
error_report("map shared IO page returned error %d handle=" XC_INTERFACE_FMT,
errno, xen_xc);
@@ -1255,8 +1255,8 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
if (!rc) {
DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
state->shared_vmport_page =
- xc_map_foreign_pages(xen_xc, xen_domid, PROT_READ|PROT_WRITE,
- &ioreq_pfn, 1);
+ xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
+ 1, &ioreq_pfn, NULL);
if (state->shared_vmport_page == NULL) {
error_report("map shared vmport IO page returned error %d handle="
XC_INTERFACE_FMT, errno, xen_xc);
@@ -1268,9 +1268,9 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
goto err;
}
- state->buffered_io_page = xc_map_foreign_pages(xen_xc, xen_domid,
+ state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
PROT_READ|PROT_WRITE,
- &bufioreq_pfn, 1);
+ 1, &bufioreq_pfn, NULL);
if (state->buffered_io_page == NULL) {
error_report("map buffered IO page returned error %d", errno);
goto err;
diff --git a/xen-mapcache.c b/xen-mapcache.c
index 97fece2358..4a04378020 100644
--- a/xen-mapcache.c
+++ b/xen-mapcache.c
@@ -176,10 +176,10 @@ static void xen_remap_bucket(MapCacheEntry *entry,
pfns[i] = (address_index << (MCACHE_BUCKET_SHIFT-XC_PAGE_SHIFT)) + i;
}
- vaddr_base = xc_map_foreign_bulk(xen_xc, xen_domid, PROT_READ|PROT_WRITE,
- pfns, err, nb_pfn);
+ vaddr_base = xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
+ nb_pfn, pfns, err);
if (vaddr_base == NULL) {
- perror("xc_map_foreign_bulk");
+ perror("xenforeignmemory_map");
exit(-1);
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-18 08:30:31 +0200