From: Konrad Rzeszutek Wilk Date: Tue, 31 Dec 2013 21:33:31 +0000 (-0500) Subject: xen/grant-table: Refactor gnttab_init X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=456847533b9ad18baa6685946a2f1e1fa9c05c34;p=linux-beck.git xen/grant-table: Refactor gnttab_init We have this odd scenario of where for PV paths we take a shortcut but for the HVM paths we first ioremap xen_hvm_resume_frames, then assign it to gnttab_shared.addr. This is needed because gnttab_map uses gnttab_shared.addr. Instead of having: if (pv) return gnttab_map if (hvm) ... gnttab_map Lets move the HVM part before the gnttab_map and remove the first call to gnttab_map. Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: David Vrabel Acked-by: Stefano Stabellini --- diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 99399cb0fd1c..e69c7780c208 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -1173,10 +1173,7 @@ static int gnttab_setup(void) if (max_nr_gframes < nr_grant_frames) return -ENOSYS; - if (xen_pv_domain()) - return gnttab_map(0, nr_grant_frames - 1); - - if (gnttab_shared.addr == NULL) { + if (xen_feature(XENFEAT_auto_translated_physmap) && gnttab_shared.addr == NULL) { gnttab_shared.addr = xen_remap(xen_hvm_resume_frames, PAGE_SIZE * max_nr_gframes); if (gnttab_shared.addr == NULL) { @@ -1185,10 +1182,7 @@ static int gnttab_setup(void) return -ENOMEM; } } - - gnttab_map(0, nr_grant_frames - 1); - - return 0; + return gnttab_map(0, nr_grant_frames - 1); } int gnttab_resume(void)