search for: xcg_handl

...Can anybody know what the problem is ? Thanks . Danius Wu. ====== The Result of running my codes: [root@vm1 program]# gcc -g -Wall -lxenctrl test.c -o test [root@vm1 program]# ./test ERROR Internal error: Could not open grant table interface (22 = Invalid argument) Open xcg_handle Error! [root@vm1 program]# ======= Source code: #include <stdio.h> #include <stdint.h> #include <time.h> #include <sys/select.h> #include <xenctrl.h> #include <sys/mman.h> int main(void) { int xcg_handle; xcg_handle = xc_gnttab_open();...

...;/dev/xen", 0755) == 0) || (errno == EEXIST)) && + (mknod(GNTTAB_DEV_NAME, S_IFCHR|0600, devnum) == 0) ) + goto reopen; + + PERROR("Could not open grant table interface"); + return -1; + } + + return fd; +} + +int xc_gnttab_close(int xcg_handle) +{ + return close(xcg_handle); +} + +void *xc_gnttab_map_grant_ref(int xcg_handle, + uint32_t domid, + uint32_t ref, + int prot) +{ + struct ioctl_gntdev_map_grant_ref map; + struct ioctl_gntdev_grant_...

...ant_table.h> #include <stdlib.h> #include <errno.h> @@ -69,6 +70,7 @@ static int log_hv_fd = -1; static evtchn_port_or_error_t log_hv_evtchn = -1; static xc_interface *xch; /* why does xenconsoled have two xc handles ? */ static xc_evtchn *xce_handle = NULL; +static xc_gnttab *xcg_handle = NULL; struct buffer { char *data; @@ -501,6 +503,17 @@ static int xs_gather(struct xs_handle *xs, const char *dir, ...) va_end(ap); return ret; } + +static void domain_unmap_interface(struct domain *dom) +{ + if (dom->interface == NULL) + return; + if (xcg_handle && dom-&gt...

...ant_table.h> #include <stdlib.h> #include <errno.h> @@ -69,6 +70,7 @@ static int log_hv_fd = -1; static evtchn_port_or_error_t log_hv_evtchn = -1; static xc_interface *xch; /* why does xenconsoled have two xc handles ? */ static xc_evtchn *xce_handle = NULL; +static xc_gnttab *xcg_handle = NULL; struct buffer { char *data; @@ -501,6 +503,18 @@ static int xs_gather(struct xs_handle *xs, const char *dir, ...) va_end(ap); return ret; } + +static void domain_unmap_interface(struct domain *dom) +{ + if (dom->interface == NULL) + return; + if (xcg_handle && dom-&gt...

Hi, I need to use the grant table mechanism, but I can''t find any example regarding how to do it. Could you please provide some examples? Thanks Carlo -- È molto più bello sapere qualcosa di tutto, che sapere tutto di una cosa. Blaise Pascal _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

This patch series introduces the shared ring used by the front-end to pass request descriptors to tapdisk, as well as responses from tapdisk to the front-end. Requests from this ring end up in tapdisk''s standard request queue. When the tapback daemon detects that the front-end tries to connect to the back-end, it spawns a tapdisk and tells it to connect to the shared ring. The shared

Changes from v3: - mini-os configuration files moved into stubdom/ - mini-os extra console support now a config option - Fewer #ifdefs - grant table setup uses hypercall bounce - Xenstore stub domain syslog support re-enabled Changes from v2: - configuration support added to mini-os build system - add mini-os support for conditionally compiling frontends, xenbus -