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| author | Eric Trudeau <etrudeau@broadcom.com> | 2013-12-04 11:39:33 +0000 |
|---|---|---|
| committer | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2013-12-04 11:39:33 +0000 |
| commit | c94cae53f9e564484f906a79be5639fc66e8cb02 (patch) | |
| tree | 852b4a17d6d7ddaa9ea228b4b815b0f7e3e04f55 | |
| parent | 14883a75ec76b44759385fb12629f4a0f1aef4e3 (diff) | |
| download | talos-obmc-linux-c94cae53f9e564484f906a79be5639fc66e8cb02.tar.gz talos-obmc-linux-c94cae53f9e564484f906a79be5639fc66e8cb02.zip | |
XEN: Grant table address, xen_hvm_resume_frames, is a phys_addr not a pfn
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>
| -rw-r--r-- | arch/arm/xen/enlighten.c | 4 | ||||
| -rw-r--r-- | drivers/xen/grant-table.c | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 83e4f959ee47..6a288c7be49f 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -224,10 +224,10 @@ static int __init xen_guest_init(void) } if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res)) return 0; - xen_hvm_resume_frames = res.start >> PAGE_SHIFT; + xen_hvm_resume_frames = res.start; xen_events_irq = irq_of_parse_and_map(node, 0); pr_info("Xen %s support found, events_irq=%d gnttab_frame_pfn=%lx\n", - version, xen_events_irq, xen_hvm_resume_frames); + version, xen_events_irq, (xen_hvm_resume_frames >> PAGE_SHIFT)); xen_domain_type = XEN_HVM_DOMAIN; xen_setup_features(); diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 028387192b60..aa846a48f400 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -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; } } |
