From: Jan Beulich jbeulich@suse.com
[ Upstream commit 9074c79b62b6e0d91d7f716c6e4e9968eaf9e043 ]
While the hypervisor hasn't been enforcing this, we would still better avoid issuing requests with GFNs not aligned to the requested order. Instead of altering the value also in the call to panic(), drop it there for being static and hence easy to determine without being part of the panic message.
Signed-off-by: Jan Beulich jbeulich@suse.com Reviewed-by: Stefano Stabellini sstabellini@kernel.org Link: https://lore.kernel.org/r/7b3998e3-1233-4e5a-89ec-d740e77eb166@suse.com Signed-off-by: Juergen Gross jgross@suse.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/xen/swiotlb-xen.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index dbb18dc956f3..de4f55154d49 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -232,10 +232,11 @@ void __init xen_swiotlb_init_early(void) /* * Get IO TLB memory from any location. */ - start = memblock_alloc(PAGE_ALIGN(bytes), PAGE_SIZE); + start = memblock_alloc(PAGE_ALIGN(bytes), + IO_TLB_SEGSIZE << IO_TLB_SHIFT); if (!start) - panic("%s: Failed to allocate %lu bytes align=0x%lx\n", - __func__, PAGE_ALIGN(bytes), PAGE_SIZE); + panic("%s: Failed to allocate %lu bytes\n", + __func__, PAGE_ALIGN(bytes));
/* * And replace that memory with pages under 4GB.