From: David Miller <[email protected]> Date: Tue, 09 Jun 2015 00:34:14 -0700 (PDT)
> Your test is faulty. > > You cannot use ASI_BLK_P loads or stores without appropriate memory > barriers around them. > > The rules for when and where you need the memory barriers are > complicated, especially if you want to incur the cost of the memory > barrier as infrequently as possible. FWIW, you're probably hitting the bug fixed by the following commit in glibc: commit 834caf06f33d79be54cff63c274fba2845513593 Author: Jose E. Marchesi <[email protected]> Date: Sat May 17 11:20:27 2014 -0700 Fix sparc memcpy data corruption when using niagara2 optimized routines. * sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Add missing membar to avoid block loads/stores to overlap previous stores. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/[email protected]
