Re: [Xen-devel] [PATCH V3 2/2] qemu: Add qemu xen logic for Xen HVM S3 resume

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On 09/09/13 04:28, Liu, Jinsong wrote:
> From 63668de43b6512c1db06405b0d2d1e0a0c68244b Mon Sep 17 00:00:00 2001
> From: Liu Jinsong <jinsong.liu@xxxxxxxxx>
> Date: Sun, 8 Sep 2013 00:39:45 +0800
> Subject: [PATCH V3 2/2] 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@xxxxxxxxx>
> ---
>  xen-all.c |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/xen-all.c b/xen-all.c
> index eb13111..388d311 100644
> --- a/xen-all.c
> +++ b/xen-all.c
> @@ -98,6 +98,7 @@ typedef struct XenIOState {
>  
>      Notifier exit;
>      Notifier suspend;
> +    Notifier wakeup;
>  } XenIOState;
>  
>  /* Xen specific function for piix pci */
> @@ -1059,6 +1060,11 @@ static void xen_read_physmap(XenIOState *state)
>      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(void)
>  {
>      int i, rc;
> @@ -1088,6 +1094,9 @@ int xen_hvm_init(void)
>      state->suspend.notify = xen_suspend_notifier;
>      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);
>      DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
>      state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, 
> XC_PAGE_SIZE,
> 

Reviewed-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

-- 
Anthony PERARD

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