Julien Grall
2013-Sep-04 15:11 UTC
[PATCH] xen/arm: Panic if we can''t copy the DTB to dom0 memory
Signed-off-by: Julien Grall <julien.grall@linaro.org> --- xen/arch/arm/domain_build.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 516d0df..0909996 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -824,11 +824,14 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) static void dtb_load(struct kernel_info *kinfo) { void * __user dtb_virt = (void * __user)(register_t)kinfo->dtb_paddr; + unsigned long rc; printk("Loading dom0 DTB to 0x%"PRIpaddr"-0x%"PRIpaddr"\n", kinfo->dtb_paddr, kinfo->dtb_paddr + fdt_totalsize(kinfo->fdt)); - raw_copy_to_guest(dtb_virt, kinfo->fdt, fdt_totalsize(kinfo->fdt)); + rc = raw_copy_to_guest(dtb_virt, kinfo->fdt, fdt_totalsize(kinfo->fdt)); + if ( rc != 0 ) + panic("Unable to copy the DTB to dom0 memory (rc = %lu)\n", rc); xfree(kinfo->fdt); } -- 1.7.10.4