[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC Patch 21/25] send store mfn and console mfn to xl before resuming secondary vm
We will call libxl__xc_domain_restore_done() to rebuild secondary vm. But we need store mfn and console mfn when rebuilding secondary vm. So make restore_results is a function pointers in callbacks struct and struct {save,restore}_callbacks, and use this callback to send store mfn and console mfn to xl. Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx> --- tools/libxc/xc_domain_restore.c | 2 +- tools/libxc/xenguest.h | 8 ++++++++ tools/libxl/libxl_colo_restore.c | 5 ----- tools/libxl/libxl_create.c | 1 + tools/libxl/libxl_save_msgs_gen.pl | 2 +- 5 files changed, 11 insertions(+), 7 deletions(-) diff --git a/tools/libxc/xc_domain_restore.c b/tools/libxc/xc_domain_restore.c index 6e025f0..dc66d89 100644 --- a/tools/libxc/xc_domain_restore.c +++ b/tools/libxc/xc_domain_restore.c @@ -2379,7 +2379,7 @@ new_checkpoint: } while (0) /* COLO */ - /* TODO: call restore_results */ + callbacks->restore_results(*store_mfn, *console_mfn, callbacks->data); /* Resume secondary vm */ frc = callbacks->postcopy(callbacks->data); diff --git a/tools/libxc/xenguest.h b/tools/libxc/xenguest.h index 1aeaad2..be8afd4 100644 --- a/tools/libxc/xenguest.h +++ b/tools/libxc/xenguest.h @@ -123,6 +123,14 @@ struct restore_callbacks { /* Enable qemu-dm logging dirty pages to xen */ int (*switch_qemu_logdirty)(int domid, unsigned enable, void *data); /* HVM only */ + /* + * callback to send store mfn and console mfn to xl + * if we want to resume vm before xc_domain_save() + * exits. + */ + void (*restore_results)(unsigned long store_mfn, unsigned long console_mfn, + void *data); + /* callback to restore toolstack specific data */ int (*toolstack_restore)(uint32_t domid, const uint8_t *buf, uint32_t size, void* data); diff --git a/tools/libxl/libxl_colo_restore.c b/tools/libxl/libxl_colo_restore.c index ebbd6b9..aea3feb 100644 --- a/tools/libxl/libxl_colo_restore.c +++ b/tools/libxl/libxl_colo_restore.c @@ -133,11 +133,6 @@ static void colo_resume_vm(libxl__egc *egc, return; } - /* - * TODO: get store mfn and console mfn - * We should call the callback restore_results in - * xc_domain_restore() before resuming the guest. - */ libxl__xc_domain_restore_done(egc, dcs, 0, 0, 0); return; diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c index 73708c5..677a98a 100644 --- a/tools/libxl/libxl_create.c +++ b/tools/libxl/libxl_create.c @@ -1048,6 +1048,7 @@ static void domcreate_bootloader_done(libxl__egc *egc, rc = ERROR_INVAL; goto out; } + callbacks->restore_results = libxl__srm_callout_callback_restore_results; if (checkpointed_stream == LIBXL_CHECKPOINTED_STREAM_COLO) { crs->ao = ao; diff --git a/tools/libxl/libxl_save_msgs_gen.pl b/tools/libxl/libxl_save_msgs_gen.pl index fbb2d67..2ecd25d 100755 --- a/tools/libxl/libxl_save_msgs_gen.pl +++ b/tools/libxl/libxl_save_msgs_gen.pl @@ -32,7 +32,7 @@ our @msgs = ( # toolstack_save done entirely `by hand' [ 7, 'rcxW', "toolstack_restore", [qw(uint32_t domid BLOCK tsdata)] ], - [ 8, 'r', "restore_results", ['unsigned long', 'store_mfn', + [ 8, 'rcx', "restore_results", ['unsigned long', 'store_mfn', 'unsigned long', 'console_mfn'] ], [ 9, 'srW', "complete", [qw(int retval int errnoval)] ], -- 1.9.3 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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