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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen staging] tools/restore: Drop unused parameters from xc_domain_restore()
commit 1171a93b6ca71894f17715050e9289befff0951d
Author: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Jan 3 17:06:51 2020 +0000
Commit: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Jan 3 18:37:25 2020 +0000
tools/restore: Drop unused parameters from xc_domain_restore()
The hvm and pae parameters are a remnant of legacy migration. They have 0
passed in from libxl_stream_read.c's process_record(), and are discarded in
xc_domain_restore().
While dropping these, update the doxygen comment to be accurate, and
simplify
the other hvm vs pv handling in xc_domain_restore().
No functional change.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
tools/libxc/include/xenguest.h | 26 +++++++++++++++-----------
tools/libxc/xc_nomigrate.c | 1 -
tools/libxc/xc_sr_restore.c | 23 +++++++----------------
tools/libxl/libxl_internal.h | 3 +--
tools/libxl/libxl_save_callout.c | 4 +---
tools/libxl/libxl_save_helper.c | 5 +----
tools/libxl/libxl_stream_read.c | 2 +-
7 files changed, 26 insertions(+), 38 deletions(-)
diff --git a/tools/libxc/include/xenguest.h b/tools/libxc/include/xenguest.h
index b4b2e19619..fdb03e32da 100644
--- a/tools/libxc/include/xenguest.h
+++ b/tools/libxc/include/xenguest.h
@@ -181,23 +181,27 @@ struct restore_callbacks {
*
* Domain is restored in a suspended state ready to be unpaused.
*
- * @parm xch a handle to an open hypervisor interface
- * @parm fd the file descriptor to restore a domain from
- * @parm dom the id of the domain
- * @parm store_evtchn the store event channel for this domain to use
- * @parm store_mfn returned with the mfn of the store page
- * @parm hvm non-zero if this is a HVM restore
- * @parm pae non-zero if this HVM domain has PAE support enabled
- * @parm stream_type non-zero if the far end of the stream is using
checkpointing
- * @parm callbacks non-NULL to receive a callback to restore toolstack
- * specific data
+ * @param xch a handle to an open hypervisor interface
+ * @param io_fd the file descriptor to restore a domain from
+ * @param dom the id of the domain
+ * @param store_evtchn the xenstore event channel for this domain to use
+ * @param store_mfn filled with the gfn of the store page
+ * @param store_domid the backend domain for xenstore
+ * @param console_evtchn the console event channel for this domain to use
+ * @param console_mfn filled with the gfn of the console page
+ * @param console_domid the backend domain for xenconsole
+ * @param stream_type XC_MIG_STREAM_NONE if the far end of the stream is using
+ * checkpointing
+ * @param callbacks non-NULL to receive a callback to restore toolstack
+ * specific data
+ * @param recv_df Only used for XC_MIG_STREAM_COLO. Contains backchannel to
+ * the source side.
* @return 0 on success, -1 on failure
*/
int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom,
unsigned int store_evtchn, unsigned long *store_mfn,
uint32_t store_domid, unsigned int console_evtchn,
unsigned long *console_mfn, uint32_t console_domid,
- unsigned int hvm, unsigned int pae,
xc_migration_stream_t stream_type,
struct restore_callbacks *callbacks, int send_back_fd);
diff --git a/tools/libxc/xc_nomigrate.c b/tools/libxc/xc_nomigrate.c
index 6d6169d5ad..c4dca88eb0 100644
--- a/tools/libxc/xc_nomigrate.c
+++ b/tools/libxc/xc_nomigrate.c
@@ -32,7 +32,6 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t
dom,
unsigned int store_evtchn, unsigned long *store_mfn,
uint32_t store_domid, unsigned int console_evtchn,
unsigned long *console_mfn, uint32_t console_domid,
- unsigned int hvm, unsigned int pae,
xc_migration_stream_t stream_type,
struct restore_callbacks *callbacks, int send_back_fd)
{
diff --git a/tools/libxc/xc_sr_restore.c b/tools/libxc/xc_sr_restore.c
index 98038096c7..19442c3453 100644
--- a/tools/libxc/xc_sr_restore.c
+++ b/tools/libxc/xc_sr_restore.c
@@ -833,7 +833,6 @@ int xc_domain_restore(xc_interface *xch, int io_fd,
uint32_t dom,
unsigned int store_evtchn, unsigned long *store_mfn,
uint32_t store_domid, unsigned int console_evtchn,
unsigned long *console_gfn, uint32_t console_domid,
- unsigned int hvm, unsigned int pae,
xc_migration_stream_t stream_type,
struct restore_callbacks *callbacks, int send_back_fd)
{
@@ -866,9 +865,6 @@ int xc_domain_restore(xc_interface *xch, int io_fd,
uint32_t dom,
callbacks->restore_results);
}
- DPRINTF("fd %d, dom %u, hvm %u, pae %u, stream_type %d",
- io_fd, dom, hvm, pae, stream_type);
-
if ( xc_domain_getinfo(xch, dom, 1, &ctx.dominfo) != 1 )
{
PERROR("Failed to get domain info");
@@ -881,6 +877,9 @@ int xc_domain_restore(xc_interface *xch, int io_fd,
uint32_t dom,
return -1;
}
+ DPRINTF("fd %d, dom %u, hvm %u, stream_type %d",
+ io_fd, dom, ctx.dominfo.hvm, stream_type);
+
ctx.domid = dom;
if ( read_headers(&ctx) )
@@ -893,19 +892,11 @@ int xc_domain_restore(xc_interface *xch, int io_fd,
uint32_t dom,
}
ctx.restore.p2m_size = nr_pfns;
+ ctx.restore.ops = ctx.dominfo.hvm
+ ? restore_ops_x86_hvm : restore_ops_x86_pv;
- if ( ctx.dominfo.hvm )
- {
- ctx.restore.ops = restore_ops_x86_hvm;
- if ( restore(&ctx) )
- return -1;
- }
- else
- {
- ctx.restore.ops = restore_ops_x86_pv;
- if ( restore(&ctx) )
- return -1;
- }
+ if ( restore(&ctx) )
+ return -1;
IPRINTF("XenStore: mfn %#"PRIpfn", dom %d, evt %u",
ctx.restore.xenstore_gfn,
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index b5adbfe4b7..a99f3627e4 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -4199,8 +4199,7 @@ _hidden int libxl__restore_emulator_xenstore_data
/* calls libxl__xc_domain_restore_done when done */
_hidden void libxl__xc_domain_restore(libxl__egc *egc,
libxl__domain_create_state *dcs,
- libxl__save_helper_state *shs,
- int hvm, int pae);
+ libxl__save_helper_state *shs);
/* If rc==0 then retval is the return value from xc_domain_save
* and errnoval is the errno value it provided.
* If rc!=0, retval and errnoval are undefined. */
diff --git a/tools/libxl/libxl_save_callout.c b/tools/libxl/libxl_save_callout.c
index 6452d70036..caa1396813 100644
--- a/tools/libxl/libxl_save_callout.c
+++ b/tools/libxl/libxl_save_callout.c
@@ -42,8 +42,7 @@ static void helper_done(libxl__egc *egc,
libxl__save_helper_state *shs);
/*----- entrypoints -----*/
void libxl__xc_domain_restore(libxl__egc *egc, libxl__domain_create_state *dcs,
- libxl__save_helper_state *shs,
- int hvm, int pae)
+ libxl__save_helper_state *shs)
{
STATE_AO_GC(dcs->ao);
@@ -61,7 +60,6 @@ void libxl__xc_domain_restore(libxl__egc *egc,
libxl__domain_create_state *dcs,
state->store_port,
state->store_domid, state->console_port,
state->console_domid,
- hvm, pae,
cbflags, dcs->restore_params.checkpointed_stream,
};
diff --git a/tools/libxl/libxl_save_helper.c b/tools/libxl/libxl_save_helper.c
index 38089a002d..cdad40be4f 100644
--- a/tools/libxl/libxl_save_helper.c
+++ b/tools/libxl/libxl_save_helper.c
@@ -275,8 +275,6 @@ int main(int argc, char **argv)
domid_t store_domid = strtoul(NEXTARG,0,10);
unsigned console_evtchn = strtoul(NEXTARG,0,10);
domid_t console_domid = strtoul(NEXTARG,0,10);
- unsigned int hvm = strtoul(NEXTARG,0,10);
- unsigned int pae = strtoul(NEXTARG,0,10);
unsigned cbflags = strtoul(NEXTARG,0,10);
xc_migration_stream_t stream_type = strtoul(NEXTARG,0,10);
assert(!*++argv);
@@ -291,8 +289,7 @@ int main(int argc, char **argv)
r = xc_domain_restore(xch, io_fd, dom, store_evtchn, &store_mfn,
store_domid, console_evtchn, &console_mfn,
- console_domid, hvm, pae,
- stream_type,
+ console_domid, stream_type,
&helper_restore_callbacks, send_back_fd);
helper_stub_restore_results(store_mfn,console_mfn,0);
complete(r);
diff --git a/tools/libxl/libxl_stream_read.c b/tools/libxl/libxl_stream_read.c
index fcb39ee7d5..514f6d9f89 100644
--- a/tools/libxl/libxl_stream_read.c
+++ b/tools/libxl/libxl_stream_read.c
@@ -580,7 +580,7 @@ static bool process_record(libxl__egc *egc,
break;
case REC_TYPE_LIBXC_CONTEXT:
- libxl__xc_domain_restore(egc, dcs, &stream->shs, 0, 0);
+ libxl__xc_domain_restore(egc, dcs, &stream->shs);
break;
case REC_TYPE_EMULATOR_XENSTORE_DATA:
--
generated by git-patchbot for /home/xen/git/xen.git#staging
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