Re: gcc 6.3 vs 8.2 Re: [RFC PATCH] powerpc: Enable kcov

2019-01-15 Thread Mathieu Malaterre
On Wed, Jan 16, 2019 at 6:09 AM Michael Ellerman wrote: > > Christophe Leroy writes: > > Le 15/01/2019 à 08:26, Mathieu Malaterre a écrit : > ... > >> > >> I did check that `custom_defconfig` is the minimal defconfig generated > >> by `savedefconfig` in both cases. > >> > >> Hints or comments wel

Re: gcc 6.3 vs 8.2 Re: [RFC PATCH] powerpc: Enable kcov

2019-01-15 Thread Michael Ellerman
Christophe Leroy writes: > Le 15/01/2019 à 08:26, Mathieu Malaterre a écrit : ... >> >> I did check that `custom_defconfig` is the minimal defconfig generated >> by `savedefconfig` in both cases. >> >> Hints or comments welcome, thanks much. > > I think you should do: > > make ARCH=powerpc CROSS

Re: gcc 6.3 vs 8.2 Re: [RFC PATCH] powerpc: Enable kcov

2019-01-15 Thread Christophe Leroy
Le 15/01/2019 à 08:26, Mathieu Malaterre a écrit : [Sorry to hijack this thread. ] On Tue, Jan 15, 2019 at 5:22 AM Andrew Donnellan wrote: kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on th

Re: gcc 6.3 vs 8.2 Re: [RFC PATCH] powerpc: Enable kcov

2019-01-15 Thread Andrew Donnellan
On 15/1/19 6:26 pm, Mathieu Malaterre wrote: [Sorry to hijack this thread. ] On Tue, Jan 15, 2019 at 5:22 AM Andrew Donnellan wrote: kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on the same fi

Re: [RFC PATCH] powerpc: Enable kcov

2019-01-15 Thread Andrew Donnellan
On 15/1/19 5:40 pm, Dmitry Vyukov wrote: On Tue, Jan 15, 2019 at 5:20 AM Andrew Donnellan wrote: kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on the same files where we currently disable gcov a

gcc 6.3 vs 8.2 Re: [RFC PATCH] powerpc: Enable kcov

2019-01-14 Thread Mathieu Malaterre
[Sorry to hijack this thread. ] On Tue, Jan 15, 2019 at 5:22 AM Andrew Donnellan wrote: > > kcov provides kernel coverage data that's useful for fuzzing tools like > syzkaller. > > Wire up kcov support on powerpc. Disable kcov instrumentation on the same > files where we currently disable gcov an

[RFC PATCH] powerpc: Enable kcov

2019-01-14 Thread Andrew Donnellan
kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on the same files where we currently disable gcov and UBSan instrumentation. Signed-off-by: Andrew Donnellan --- kcov looks like it's working okay, b