On Wed, 2016-16-03 at 02:29:30 UTC, Cyril Bur wrote: > Commit 70fe3d9 "powerpc: Restore FPU/VEC/VSX if previously used" introduces a > call to restore_math() late in the syscall return path, after MSR_RI has been > cleared. The MSR_RI flag is used to indicate whether the kernel can take > another exception or not. A cleared MSR_RI flag indicates that the kernel > cannot. > > Unfortunately when a machine is under high load an SLB miss can occur in > restore_math() which (with MSR_RI cleared) leads to an unrecoverable > exception. ... > > Signed-off-by: Cyril Bur <cyril...@gmail.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/6e669f085d595cb6053920832c cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
