diff mbox series

[v2,1/3] xen/arm: move xen_swiotlb_detect to arm/swiotlb-xen.h

Message ID 20210512201823.1963-1-sstabellini@kernel.org (mailing list archive)
State Accepted
Commit cb6f6b3384d7825d2a43f2256c5200e3b3956fc8
Headers show
Series swiotlb-xen init fixes | expand

Commit Message

Stefano Stabellini May 12, 2021, 8:18 p.m. UTC
From: Stefano Stabellini <stefano.stabellini@xilinx.com>

Move xen_swiotlb_detect to a static inline function to make it available
to !CONFIG_XEN builds.

CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>

---
Changes in v2:
- patch split
---
 arch/arm/xen/mm.c             | 12 ------------
 include/xen/arm/swiotlb-xen.h | 15 ++++++++++++++-
 2 files changed, 14 insertions(+), 13 deletions(-)

Comments

Christoph Hellwig May 13, 2021, 6:10 a.m. UTC | #1
Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
Juergen Gross May 14, 2021, 9:59 a.m. UTC | #2
On 12.05.21 22:18, Stefano Stabellini wrote:
> From: Stefano Stabellini <stefano.stabellini@xilinx.com>
> 
> Move xen_swiotlb_detect to a static inline function to make it available
> to !CONFIG_XEN builds.
> 
> CC: boris.ostrovsky@oracle.com
> CC: jgross@suse.com
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen
diff mbox series

Patch

diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index f8f07469d259..223b1151fd7d 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c
@@ -135,18 +135,6 @@  void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)
 	return;
 }
 
-int xen_swiotlb_detect(void)
-{
-	if (!xen_domain())
-		return 0;
-	if (xen_feature(XENFEAT_direct_mapped))
-		return 1;
-	/* legacy case */
-	if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain())
-		return 1;
-	return 0;
-}
-
 static int __init xen_mm_init(void)
 {
 	struct gnttab_cache_flush cflush;
diff --git a/include/xen/arm/swiotlb-xen.h b/include/xen/arm/swiotlb-xen.h
index 2994fe6031a0..33336ab58afc 100644
--- a/include/xen/arm/swiotlb-xen.h
+++ b/include/xen/arm/swiotlb-xen.h
@@ -2,6 +2,19 @@ 
 #ifndef _ASM_ARM_SWIOTLB_XEN_H
 #define _ASM_ARM_SWIOTLB_XEN_H
 
-extern int xen_swiotlb_detect(void);
+#include <xen/features.h>
+#include <xen/xen.h>
+
+static inline int xen_swiotlb_detect(void)
+{
+	if (!xen_domain())
+		return 0;
+	if (xen_feature(XENFEAT_direct_mapped))
+		return 1;
+	/* legacy case */
+	if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain())
+		return 1;
+	return 0;
+}
 
 #endif /* _ASM_ARM_SWIOTLB_XEN_H */