Re: [Qemu-devel] [PATCH] memory: exit when hugepage allocation fails if mem-prealloc

[Paolo Bonzini <pbonzini@redhat.com>]

On 22/01/2016 15:15, Luiz Capitulino wrote:
> When -mem-prealloc is passed on the command-line, the expected
> behavior is to exit if the hugepage allocation fails.  However,
> this behavior is broken since commit cc57501dee which made
> hugepage allocation fall back to regular ram in case of faliure.
> 
> This commit restores the expected behavior for -mem-prealloc.
> 
> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
> ---
>  numa.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/numa.c b/numa.c
> index 425ef8d..0e1638d 100644
> --- a/numa.c
> +++ b/numa.c
> @@ -418,12 +418,13 @@ static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner,
>          Error *err = NULL;
>          memory_region_init_ram_from_file(mr, owner, name, ram_size, false,
>                                           mem_path, &err);
> -
> -        /* Legacy behavior: if allocation failed, fall back to
> -         * regular RAM allocation.
> -         */
>          if (err) {
>              error_report_err(err);
> +            if (mem_prealloc)
> +                exit(1);
> +            /* Legacy behavior: if allocation failed, fall back to
> +             * regular RAM allocation.
> +             */
>              memory_region_init_ram(mr, owner, name, ram_size, &error_fatal);
>          }
>  #else
> 

Right, patch cc57501dee did the correct change but it was insufficient.
 I'll add the braces for you and queue the patch.

Paolo