On 08/01/15 17:01, Juergen Gross wrote:
> When converting a pfn to a physical address be sure to use 64 bit
> wide types.
>
> Also avoid invalidating memory for zero sized non-aligned extra
> memory regions.
"Also" means this bit should be in another patch...
> Signed-off-by: Juergen Gross <jgr...@suse.com>
> Tested-by: Boris Ostrovsky <boris.ostrov...@oracle.com>
> ---
> arch/x86/xen/setup.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
> index feb6d86..8839d7b 100644
> --- a/arch/x86/xen/setup.c
> +++ b/arch/x86/xen/setup.c
> @@ -160,6 +160,8 @@ void __init xen_inv_extra_mem(void)
> int i;
>
> for (i = 0; i < XEN_EXTRA_MEM_MAX_REGIONS; i++) {
> + if (!xen_extra_mem[i].size)
> + continue;
> pfn_s = PFN_DOWN(xen_extra_mem[i].start);
> pfn_e = PFN_UP(xen_extra_mem[i].start + xen_extra_mem[i].size);
> for (pfn = pfn_s; pfn < pfn_e; pfn++)
i.e., this hunk should be in a separate path.
David
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