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Violators will be prosecuted for from ; Fri, 14 Jul 2017 12:03:55 +0100 From: Christian Borntraeger Date: Fri, 14 Jul 2017 12:40:41 +0200 In-Reply-To: <1500028867-134709-1-git-send-email-borntraeger@de.ibm.com> References: <1500028867-134709-1-git-send-email-borntraeger@de.ibm.com> Message-Id: <1500028867-134709-15-git-send-email-borntraeger@de.ibm.com> Subject: [Qemu-devel] [PULL 14/40] s390x/css: add missing css state conditionally List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Maydell Cc: qemu-devel , Alexander Graf , Richard Henderson , Cornelia Huck , Thomas Huth , Halil Pasic , Christian Borntraeger From: Halil Pasic Although we have recently vmstatified the migration of some css infrastructure, for some css entities there is still state to be migrated left, because the focus was keeping migration stream compatibility (that is basically everything as-is). Let us add vmstate helpers and extend existing vmstate descriptions so that we have everything we need. Let us guard the added state via css_migration_enabled, so we keep the compatible behavior if css migration is disabled. Let's also annotate the bits which do not need to be migrated for better readability. Signed-off-by: Halil Pasic Reviewed-by: Cornelia Huck Reviewed-by: Juan Quintela Message-Id: <20170711145441.33925-4-pasic@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger --- hw/intc/s390_flic.c | 20 +++++++++++++++ hw/s390x/css.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 94 insertions(+) diff --git a/hw/intc/s390_flic.c b/hw/intc/s390_flic.c index efcb1dd..ff6e4ec 100644 --- a/hw/intc/s390_flic.c +++ b/hw/intc/s390_flic.c @@ -200,6 +200,22 @@ static void qemu_s390_flic_register_types(void) type_init(qemu_s390_flic_register_types) +static bool adapter_info_so_needed(void *opaque) +{ + return css_migration_enabled(); +} + +const VMStateDescription vmstate_adapter_info_so = { + .name = "s390_adapter_info/summary_offset", + .version_id = 1, + .minimum_version_id = 1, + .needed = adapter_info_so_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT32(summary_offset, AdapterInfo), + VMSTATE_END_OF_LIST() + } +}; + const VMStateDescription vmstate_adapter_info = { .name = "s390_adapter_info", .version_id = 1, @@ -213,6 +229,10 @@ const VMStateDescription vmstate_adapter_info = { */ VMSTATE_END_OF_LIST() }, + .subsections = (const VMStateDescription * []) { + &vmstate_adapter_info_so, + NULL + } }; const VMStateDescription vmstate_adapter_routes = { diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 1aed89f..e9a0613 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -29,12 +29,45 @@ typedef struct CrwContainer { QTAILQ_ENTRY(CrwContainer) sibling; } CrwContainer; +static const VMStateDescription vmstate_crw = { + .name = "s390_crw", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT16(flags, CRW), + VMSTATE_UINT16(rsid, CRW), + VMSTATE_END_OF_LIST() + }, +}; + +static const VMStateDescription vmstate_crw_container = { + .name = "s390_crw_container", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_STRUCT(crw, CrwContainer, 0, vmstate_crw, CRW), + VMSTATE_END_OF_LIST() + }, +}; + typedef struct ChpInfo { uint8_t in_use; uint8_t type; uint8_t is_virtual; } ChpInfo; +static const VMStateDescription vmstate_chp_info = { + .name = "s390_chp_info", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT8(in_use, ChpInfo), + VMSTATE_UINT8(type, ChpInfo), + VMSTATE_UINT8(is_virtual, ChpInfo), + VMSTATE_END_OF_LIST() + } +}; + typedef struct SubchSet { SubchDev *sch[MAX_SCHID + 1]; unsigned long schids_used[BITS_TO_LONGS(MAX_SCHID + 1)]; @@ -221,6 +254,19 @@ typedef struct CssImage { ChpInfo chpids[MAX_CHPID + 1]; } CssImage; +static const VMStateDescription vmstate_css_img = { + .name = "s390_css_img", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + /* Subchannel sets have no relevant state. */ + VMSTATE_STRUCT_ARRAY(chpids, CssImage, MAX_CHPID + 1, 0, + vmstate_chp_info, ChpInfo), + VMSTATE_END_OF_LIST() + } + +}; + typedef struct IoAdapter { uint32_t id; uint8_t type; @@ -239,10 +285,34 @@ typedef struct ChannelSubSys { uint64_t chnmon_area; CssImage *css[MAX_CSSID + 1]; uint8_t default_cssid; + /* don't migrate, see css_register_io_adapters */ IoAdapter *io_adapters[CSS_IO_ADAPTER_TYPE_NUMS][MAX_ISC + 1]; + /* don't migrate, see get_indicator and IndAddrPtrTmp */ QTAILQ_HEAD(, IndAddr) indicator_addresses; } ChannelSubSys; +static const VMStateDescription vmstate_css = { + .name = "s390_css", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_QTAILQ_V(pending_crws, ChannelSubSys, 1, vmstate_crw_container, + CrwContainer, sibling), + VMSTATE_BOOL(sei_pending, ChannelSubSys), + VMSTATE_BOOL(do_crw_mchk, ChannelSubSys), + VMSTATE_BOOL(crws_lost, ChannelSubSys), + /* These were kind of migrated by virtio */ + VMSTATE_UINT8(max_cssid, ChannelSubSys), + VMSTATE_UINT8(max_ssid, ChannelSubSys), + VMSTATE_BOOL(chnmon_active, ChannelSubSys), + VMSTATE_UINT64(chnmon_area, ChannelSubSys), + VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(css, ChannelSubSys, MAX_CSSID + 1, + 0, vmstate_css_img, CssImage), + VMSTATE_UINT8(default_cssid, ChannelSubSys), + VMSTATE_END_OF_LIST() + } +}; + static ChannelSubSys channel_subsys = { .pending_crws = QTAILQ_HEAD_INITIALIZER(channel_subsys.pending_crws), .do_crw_mchk = true, @@ -282,6 +352,10 @@ static int subch_dev_post_load(void *opaque, int version_id) css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s); } + if (css_migration_enabled()) { + /* No compat voodoo to do ;) */ + return 0; + } /* * Hack alert. If we don't migrate the channel subsystem status * we still need to find out if the guest enabled mss/mcss-e. -- 2.7.4