[PATCH v4 2/6] swiotlb: Remove call to sme_active()

Thiago Jung Bauermann bauerman at linux.ibm.com
Tue Aug 6 14:49:15 AEST 2019


sme_active() is an x86-specific function so it's better not to call it from
generic code.

There's no need to mention which memory encryption feature is active, so
just use a more generic message. Besides, other architectures will have
different names for similar technology.

Signed-off-by: Thiago Jung Bauermann <bauerman at linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch at lst.de>
Reviewed-by: Tom Lendacky <thomas.lendacky at amd.com>
---
 kernel/dma/swiotlb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 9de232229063..f29caad71e13 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -461,8 +461,7 @@ phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
 		panic("Can not allocate SWIOTLB buffer earlier and can't now provide you with the DMA bounce buffer");
 
 	if (mem_encrypt_active())
-		pr_warn_once("%s is active and system is using DMA bounce buffers\n",
-			     sme_active() ? "SME" : "SEV");
+		pr_warn_once("Memory encryption is active and system is using DMA bounce buffers\n");
 
 	mask = dma_get_seg_boundary(hwdev);
 


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