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Tue, 21 May 2024 10:15:51 -0700 (PDT) From: Andrew Cooper To: Xen-devel Cc: Andrew Cooper , George Dunlap , Jan Beulich , Stefano Stabellini , Julien Grall , Roberto Bagnara , "consulting @ bugseng . com" , Oleksii Kurochko Subject: [PATCH 1/3] xen/lzo: Implement COPY{4,8} using memcpy() Date: Tue, 21 May 2024 18:15:44 +0100 Message-Id: <20240521171546.3650664-2-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20240521171546.3650664-1-andrew.cooper3@citrix.com> References: <20240521171546.3650664-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1716311782571100005 Content-Type: text/plain; charset="utf-8" This is simpler and easier for both humans and compilers to read. It also addresses 6 instances of MISRA R5.3 violation (shadowing of the ptr_ local variable inside both {put,get}_unaligned()). No change, not even in the compiled binary. Signed-off-by: Andrew Cooper Reviewed-by: Stefano Stabellini --- CC: George Dunlap CC: Jan Beulich CC: Stefano Stabellini CC: Julien Grall CC: Roberto Bagnara CC: consulting@bugseng.com CC: Oleksii Kurochko --- xen/common/lzo.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/xen/common/lzo.c b/xen/common/lzo.c index cc03f0f5547f..3454ce4a7e24 100644 --- a/xen/common/lzo.c +++ b/xen/common/lzo.c @@ -25,15 +25,8 @@ */ =20 =20 -#define COPY4(dst, src) \ - put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst)) -#if defined(__x86_64__) -#define COPY8(dst, src) \ - put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst)) -#else -#define COPY8(dst, src) \ - COPY4(dst, src); COPY4((dst) + 4, (src) + 4) -#endif +#define COPY4(dst, src) memcpy(dst, src, 4) +#define COPY8(dst, src) memcpy(dst, src, 8) =20 #ifdef __MINIOS__ # include --=20 2.30.2