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Fix kernel unaligned access on sparc64

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Update the SA_COPY_DATA macro to check if architecture supports
efficient unaligned memory accesses at compile time.  Otherwise
fallback to using the sa_copy_data() function.

The kernel provided CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is
used to determine availability in kernel space.  In user space
the x86_64, x86, powerpc, and sometimes arm architectures will
define the HAVE_EFFICIENT_UNALIGNED_ACCESS macro.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7642
Closes #7684
This commit is contained in:
Brian Behlendorf
2018-07-11 13:10:40 -07:00
committed by Tony Hutter
parent 9daae583d8
commit 716ce2b89e
3 changed files with 28 additions and 16 deletions
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module/icp/algs/modes/ccm.c
+1 -1
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@@ -28,7 +28,7 @@
#include <sys/crypto/common.h>
#include <sys/crypto/impl.h>
#if defined(__i386) || defined(__amd64)
#ifdef HAVE_EFFICIENT_UNALIGNED_ACCESS
#include <sys/byteorder.h>
#define UNALIGNED_POINTERS_PERMITTED
#endif