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qemu: Add qemu xen logic for Xen HVM S3 resume 

This patch is qemu patch 2 to fix Xen HVM S3 bug, adding qemu
xen logic. When qemu wakeup, qemu xen logic is notified and
hypercall to xen hypervisor to unpause domain.

Signed-off-by: Liu Jinsong <jinsong.liu@intel.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
This commit is contained in:
Liu, Jinsong 2013-09-25 16:40:23 +00:00 committed by Stefano Stabellini
parent 4bc78a8772
commit 11addd0ab9
1 changed files with 9 additions and 0 deletions
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9
xen-all.c
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@ -98,6 +98,7 @@ typedef struct XenIOState {
Notifier exit; Notifier exit;
Notifier suspend; Notifier suspend;
Notifier wakeup;
} XenIOState; } XenIOState;
/* Xen specific function for piix pci */ /* Xen specific function for piix pci */
@ -1060,6 +1061,11 @@ static void xen_read_physmap(XenIOState *state)
free(entries); free(entries);
} }
static void xen_wakeup_notifier(Notifier *notifier, void *data)
{
xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
}
int xen_hvm_init(MemoryRegion **ram_memory) int xen_hvm_init(MemoryRegion **ram_memory)
{ {
int i, rc; int i, rc;
@ -1089,6 +1095,9 @@ int xen_hvm_init(MemoryRegion **ram_memory)
state->suspend.notify = xen_suspend_notifier; state->suspend.notify = xen_suspend_notifier;
qemu_register_suspend_notifier(&state->suspend); qemu_register_suspend_notifier(&state->suspend);
state->wakeup.notify = xen_wakeup_notifier;
qemu_register_wakeup_notifier(&state->wakeup);
xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn); xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn);
DPRINTF("shared page at pfn %lx\n", ioreq_pfn); DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,