[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH V3] xl: HVM domain S3 bugfix
On Mon, 2013-09-09 at 03:29 +0000, Liu, Jinsong wrote: > From 18344216b432648605726b137b348f28ef64a4ef Mon Sep 17 00:00:00 2001 > From: Liu Jinsong <jinsong.liu@xxxxxxxxx> > Date: Fri, 23 Aug 2013 23:30:23 +0800 > Subject: [PATCH V3] xl: HVM domain S3 bugfix > > Currently Xen hvm s3 has a bug coming from the difference between > qemu-traditioanl and qemu-xen. For qemu-traditional, the way to "traditional" > resume from hvm s3 is via 'xl trigger' command. However, for > qemu-xen, the way to resume from hvm s3 inherited from standard > qemu, i.e. via QMP, and it doesn't work under Xen. > > The root cause is, for qemu-xen, 'xl trigger' command didn't reset > devices, while QMP didn't unpause hvm domain though they did qemu > system reset. > > We have two qemu patches one xl patch to fix the HVM S3 bug: > This patch is the xl patch. It invokes QMP system_wakeup so that > qemu logic for hvm s3 could be triggerred. "triggered" > > Signed-off-by: Liu Jinsong <jinsong.liu@xxxxxxxxx> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> I'll hold off on applying until someone givers me a heads up that the qemu side is in place. I'll try and remember to fix the commit message typos as I commit, so no need to resend for those. > --- > tools/libxl/libxl.c | 31 +++++++++++++++++++++++++++++-- > tools/libxl/libxl_internal.h | 2 ++ > tools/libxl/libxl_qmp.c | 5 +++++ > 3 files changed, 36 insertions(+), 2 deletions(-) > > diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c > index 81785df..267bc25 100644 > --- a/tools/libxl/libxl.c > +++ b/tools/libxl/libxl.c > @@ -4641,10 +4641,37 @@ int libxl_domain_sched_params_get(libxl_ctx *ctx, > uint32_t domid, > return ret; > } > > +static int libxl__domain_s3_resume(libxl__gc *gc, int domid) > +{ > + int rc = 0; > + > + switch (libxl__domain_type(gc, domid)) { > + case LIBXL_DOMAIN_TYPE_HVM: > + switch (libxl__device_model_version_running(gc, domid)) { > + case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL: > + rc = xc_set_hvm_param(CTX->xch, domid, HVM_PARAM_ACPI_S_STATE, > 0); > + break; > + case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN: > + rc = libxl__qmp_system_wakeup(gc, domid); > + break; > + default: > + rc = ERROR_INVAL; > + break; > + } > + break; > + default: > + rc = ERROR_INVAL; > + break; > + } > + > + return rc; > +} > + > int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid, > libxl_trigger trigger, uint32_t vcpuid) > { > int rc; > + GC_INIT(ctx); > > switch (trigger) { > case LIBXL_TRIGGER_POWER: > @@ -4668,8 +4695,7 @@ int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid, > XEN_DOMCTL_SENDTRIGGER_RESET, vcpuid); > break; > case LIBXL_TRIGGER_S3RESUME: > - xc_set_hvm_param(ctx->xch, domid, HVM_PARAM_ACPI_S_STATE, 0); > - rc = 0; > + rc = libxl__domain_s3_resume(gc, domid); > break; > default: > rc = -1; > @@ -4684,6 +4710,7 @@ int libxl_send_trigger(libxl_ctx *ctx, uint32_t domid, > rc = ERROR_FAIL; > } > > + GC_FREE; > return rc; > } > > diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h > index f051d91..0ef0a3a 100644 > --- a/tools/libxl/libxl_internal.h > +++ b/tools/libxl/libxl_internal.h > @@ -1408,6 +1408,8 @@ _hidden int libxl__qmp_query_serial(libxl__qmp_handler > *qmp); > _hidden int libxl__qmp_pci_add(libxl__gc *gc, int d, libxl_device_pci > *pcidev); > _hidden int libxl__qmp_pci_del(libxl__gc *gc, int domid, > libxl_device_pci *pcidev); > +/* Resume hvm domain */ > +_hidden int libxl__qmp_system_wakeup(libxl__gc *gc, int domid); > /* Suspend QEMU. */ > _hidden int libxl__qmp_stop(libxl__gc *gc, int domid); > /* Resume QEMU. */ > diff --git a/tools/libxl/libxl_qmp.c b/tools/libxl/libxl_qmp.c > index f681f3a..3c3b301 100644 > --- a/tools/libxl/libxl_qmp.c > +++ b/tools/libxl/libxl_qmp.c > @@ -878,6 +878,11 @@ int libxl__qmp_pci_del(libxl__gc *gc, int domid, > libxl_device_pci *pcidev) > return qmp_device_del(gc, domid, id); > } > > +int libxl__qmp_system_wakeup(libxl__gc *gc, int domid) > +{ > + return qmp_run_command(gc, domid, "system_wakeup", NULL, NULL, NULL); > +} > + > int libxl__qmp_save(libxl__gc *gc, int domid, const char *filename) > { > libxl__json_object *args = NULL; _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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