[pve-devel] Fwd: [Qemu-devel] [PATCH] ahci: add migration support

[Alexandre DERUMIER]

just posted yesterday, maybe can we add the patch to pve-qemu-kvm ?

----- Mail transféré ----- 

De: "Jason Baron" <jbaron at redhat.com> 
À: kwolf at redhat.com, afaerber at suse.de, agraf at suse.de 
Cc: qemu-devel at nongnu.org, yamahata at valinux.co.jp, "alex williamson" <alex.williamson at redhat.com>, aliguori at us.ibm.com, "jan kiszka" <jan.kiszka at siemens.com> 
Envoyé: Jeudi 30 Août 2012 20:00:04 
Objet: [Qemu-devel] [PATCH] ahci: add migration support 

Add support for ahci migration. This patch builds upon the patches posted 
previously by Andreas Faerber: 

http://lists.gnu.org/archive/html/qemu-devel/2012-08/msg01538.html 

(I hope I am giving Andreas proper credit for his work.) 

I've tested these patches by migrating Windows 7 and Fedora 16 guests on 
both piix with ahci attached and on q35 (which has a built-in ahci controller). 

Signed-off-by: Jason Baron <jbaron at redhat.com> 
--- 
hw/ide/ahci.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 
hw/ide/ahci.h | 10 +++++++++ 
hw/ide/ich.c | 11 +++++++-- 
3 files changed, 81 insertions(+), 4 deletions(-) 

diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c 
index b53c757..e94509b 100644 
--- a/hw/ide/ahci.c 
+++ b/hw/ide/ahci.c 
@@ -1204,6 +1204,65 @@ void ahci_reset(AHCIState *s) 
} 
} 

+static const VMStateDescription vmstate_ahci_device = { 
+ .name = "ahci port", 
+ .version_id = 1, 
+ .fields = (VMStateField []) { 
+ VMSTATE_IDE_BUS(port, AHCIDevice), 
+ VMSTATE_UINT32(port_state, AHCIDevice), 
+ VMSTATE_UINT32(finished, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.cmd, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.tfdata, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.sig, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.scr_err, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.scr_act, AHCIDevice), 
+ VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice), 
+ VMSTATE_END_OF_LIST() 
+ }, 
+}; 
+ 
+static int ahci_state_post_load(void *opaque, int version_id) 
+{ 
+ int i; 
+ AHCIState *s = opaque; 
+ 
+ for (i = 0; i < s->ports; i++) { 
+ AHCIPortRegs *pr = &s->dev[i].port_regs; 
+ 
+ map_page(&s->dev[i].lst, 
+ ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); 
+ map_page(&s->dev[i].res_fis, 
+ ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); 
+ } 
+ 
+ return 0; 
+} 
+ 
+const VMStateDescription vmstate_ahci = { 
+ .name = "ahci", 
+ .version_id = 1, 
+ .post_load = ahci_state_post_load, 
+ .fields = (VMStateField []) { 
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports, 
+ vmstate_ahci_device, AHCIDevice), 
+ VMSTATE_UINT32(control_regs.cap, AHCIState), 
+ VMSTATE_UINT32(control_regs.ghc, AHCIState), 
+ VMSTATE_UINT32(control_regs.irqstatus, AHCIState), 
+ VMSTATE_UINT32(control_regs.impl, AHCIState), 
+ VMSTATE_UINT32(control_regs.version, AHCIState), 
+ VMSTATE_UINT32(idp_index, AHCIState), 
+ VMSTATE_END_OF_LIST() 
+ }, 
+}; 
+ 
typedef struct SysbusAHCIState { 
SysBusDevice busdev; 
AHCIState ahci; 
@@ -1212,7 +1271,10 @@ typedef struct SysbusAHCIState { 

static const VMStateDescription vmstate_sysbus_ahci = { 
.name = "sysbus-ahci", 
- .unmigratable = 1, 
+ .fields = (VMStateField []) { 
+ VMSTATE_AHCI(ahci, AHCIPCIState), 
+ VMSTATE_END_OF_LIST() 
+ }, 
}; 

static void sysbus_ahci_reset(DeviceState *dev) 
diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h 
index 1200a56..7719dbf 100644 
--- a/hw/ide/ahci.h 
+++ b/hw/ide/ahci.h 
@@ -307,6 +307,16 @@ typedef struct AHCIPCIState { 
AHCIState ahci; 
} AHCIPCIState; 

+extern const VMStateDescription vmstate_ahci; 
+ 
+#define VMSTATE_AHCI(_field, _state) { \ 
+ .name = (stringify(_field)), \ 
+ .size = sizeof(AHCIState), \ 
+ .vmsd = &vmstate_ahci, \ 
+ .flags = VMS_STRUCT, \ 
+ .offset = vmstate_offset_value(_state, _field, AHCIState), \ 
+} 
+ 
typedef struct NCQFrame { 
uint8_t fis_type; 
uint8_t c; 
diff --git a/hw/ide/ich.c b/hw/ide/ich.c 
index 272b773..ae6f56f 100644 
--- a/hw/ide/ich.c 
+++ b/hw/ide/ich.c 
@@ -79,9 +79,14 @@ 
#define ICH9_IDP_INDEX 0x10 
#define ICH9_IDP_INDEX_LOG2 0x04 

-static const VMStateDescription vmstate_ahci = { 
+static const VMStateDescription vmstate_ich9_ahci = { 
.name = "ahci", 
- .unmigratable = 1, 
+ .version_id = 1, 
+ .fields = (VMStateField []) { 
+ VMSTATE_PCI_DEVICE(card, AHCIPCIState), 
+ VMSTATE_AHCI(ahci, AHCIPCIState), 
+ VMSTATE_END_OF_LIST() 
+ }, 
}; 

static void pci_ich9_reset(DeviceState *dev) 
@@ -152,7 +157,7 @@ static void ich_ahci_class_init(ObjectClass *klass, void *data) 
k->device_id = PCI_DEVICE_ID_INTEL_82801IR; 
k->revision = 0x02; 
k->class_id = PCI_CLASS_STORAGE_SATA; 
- dc->vmsd = &vmstate_ahci; 
+ dc->vmsd = &vmstate_ich9_ahci; 
dc->reset = pci_ich9_reset; 
} 

-- 
1.7.1 





-- 

-- 



	

Alexandre D e rumier 

Ingénieur Systèmes et Réseaux 


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