This is a note to let you know that I've just added the patch titled
CONFIG_XEN_PV breaks xen_create_contiguous_region on ARM
to the 4.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
config_xen_pv-breaks-xen_create_contiguous_region-on-arm.patch
and it can be found in the queue-4.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f9005571701920551bcf54a500973fb61f2e1eda Mon Sep 17 00:00:00 2001
From: Stefano Stabellini <stefanos@xxxxxxxxxx>
Date: Wed, 31 Oct 2018 16:11:49 -0700
Subject: CONFIG_XEN_PV breaks xen_create_contiguous_region on ARM
From: Stefano Stabellini <stefanos@xxxxxxxxxx>
commit f9005571701920551bcf54a500973fb61f2e1eda upstream.
xen_create_contiguous_region has now only an implementation if
CONFIG_XEN_PV is defined. However, on ARM we never set CONFIG_XEN_PV but
we do have an implementation of xen_create_contiguous_region which is
required for swiotlb-xen to work correctly (although it just sets
*dma_handle).
[backport: remove change to xen_remap_pfn]
Cc: <stable@xxxxxxxxxxxxxxx> # 4.12
Fixes: 16624390816c ("xen: create xen_create/destroy_contiguous_region() stubs for PVHVM only builds")
Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
CC: Jeff.Kubascik@xxxxxxxxxxxxxxx
CC: Jarvis.Roach@xxxxxxxxxxxxxxx
CC: Nathan.Studer@xxxxxxxxxxxxxxx
CC: vkuznets@xxxxxxxxxx
CC: boris.ostrovsky@xxxxxxxxxx
CC: jgross@xxxxxxxx
CC: julien.grall@xxxxxxx
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/xen/xen-ops.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -41,7 +41,7 @@ int xen_setup_shutdown_event(void);
extern unsigned long *xen_contiguous_bitmap;
-#ifdef CONFIG_XEN_PV
+#if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64)
int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
unsigned int address_bits,
dma_addr_t *dma_handle);
Patches currently in stable-queue which might be from stefanos@xxxxxxxxxx are
queue-4.18/config_xen_pv-breaks-xen_create_contiguous_region-on-arm.patch
