Re: Revert "powerpc/64: Avoid restore_math call if possible in syscall exit"

2017-08-08 Thread Michael Ellerman
On Tue, 2017-08-08 at 10:55:57 UTC, Michael Ellerman wrote: > This reverts commit bc4f65e4cf9d6cc43e0e9ba0b8648cf9201cd55f. > > As reported by Andreas, this commit is causing unrecoverable SLB misses in the > system call exit path: > > Unrecoverable exception 4100 at c000a1ec > Oops:

[PATCH] Revert "powerpc/64: Avoid restore_math call if possible in syscall exit"

2017-08-08 Thread Michael Ellerman
This reverts commit bc4f65e4cf9d6cc43e0e9ba0b8648cf9201cd55f. As reported by Andreas, this commit is causing unrecoverable SLB misses in the system call exit path: Unrecoverable exception 4100 at c000a1ec Oops: Unrecoverable exception, sig: 6 [#1] SMP NR_CPUS=2 PowerMac ... CPU: