On Wed, Jan 26, 2005 at 09:24:42AM +0100, Krzysztof Helt wrote: > Here is a patch for FPU context switching in SMP. > A copy_thread() function clears PF_USEDFPU flag for a new thread, > but it does not clear the PSR_EF bit. Thus, a first FPU exception > called from the child thread is not handled properly. I made the > patch after PPC and MIPS architectures - both clear a similar bit > in copy_thread. > This bug does not exist in the UP kernel, probably because it > does not rely on PF_USEDFPU flag. > The patch below should be applied for both 2.4 and 2.6 branches. > I tested it with a test-fenv program from glibc testsuite. The > test fails the same test cases in both SMP and UP with the patch > applied. Without the patch, the test on SMP kernel failes in > almost two times more testcases.
Are you sure a bugfix merits a copyright attribution? It's atypical elsewhere... -- wli - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
