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XEN: Grant table address, xen_hvm_resume_frames, is a phys_addr not a pfn

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From: Eric Trudeau <etrudeau@broadcom.com>

xen_hvm_resume_frames stores the physical address of the grant table.
englighten.c was incorrectly setting it as if it was a page frame number.
This caused the table to be mapped into the guest at an unexpected physical
address.

Additionally, a warning is improved to include the grant table address which
failed in xen_remap.

Signed-off-by: Eric Trudeau <etrudeau@broadcom.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Eric Trudeau
2013-12-04 11:39:33 +00:00
committed by Stefano Stabellini
parent 14883a75ec
commit c94cae53f9
2 changed files with 4 additions and 3 deletions
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3
drivers/xen/grant-table.c
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@@ -1176,7 +1176,8 @@ static int gnttab_setup(void)
gnttab_shared.addr = xen_remap(xen_hvm_resume_frames,
PAGE_SIZE * max_nr_gframes);
if (gnttab_shared.addr == NULL) {
pr_warn("Failed to ioremap gnttab share frames!\n");
pr_warn("Failed to ioremap gnttab share frames (addr=0x%08lx)!\n",
xen_hvm_resume_frames);
return -ENOMEM;
}
}