Re: [PATCH] x86: Avoid tripping watchdog when constructing dom0

[Andrew Cooper <andrew.cooper3@citrix.com>]

On 11/06/15 14:03, Ross Lagerwall wrote:
> Constructing dom0 may take a few seconds, particularly if the slow VESA
> graphics terminal is used. Process pending softirqs a few times to avoid
> tripping a watchdog with a short timeout.
>
> Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>

Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

> ---
>  xen/arch/x86/domain_build.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
> index 03e4bfe..98d27f2 100644
> --- a/xen/arch/x86/domain_build.c
> +++ b/xen/arch/x86/domain_build.c
> @@ -930,6 +930,8 @@ int __init construct_dom0(
>      BUG_ON(d->vcpu[0] == NULL);
>      BUG_ON(v->is_initialised);
>  
> +    process_pending_softirqs();
> +
>      printk("*** LOADING DOMAIN 0 ***\n");
>  
>      d->max_pages = ~0U;
> @@ -946,6 +948,8 @@ int __init construct_dom0(
>      if ( (rc = elf_xen_parse(&elf, &parms)) != 0 )
>          goto out;
>  
> +    process_pending_softirqs();
> +
>      /* compatibility check */
>      compatible = 0;
>      compat32   = 0;
> @@ -1167,6 +1171,8 @@ int __init construct_dom0(
>             _p(v_start), _p(v_end));
>      printk(" ENTRY ADDRESS: %p\n", _p(parms.virt_entry));
>  
> +    process_pending_softirqs();
> +
>      mpt_alloc = (vpt_start - v_start) + pfn_to_paddr(alloc_spfn);
>      if ( vinitrd_start )
>          mpt_alloc -= PAGE_ALIGN(initrd_len);