Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-26 Thread Michael Ellerman
Linus Torvalds writes: > On Mon, Jul 25, 2022 at 5:39 AM Michael Ellerman wrote: >> >> Further digging shows that the build failures only occur with compilers >> that default to 64-bit long double. > > Where the heck do we have 'long double' things anywhere in the kernel? There's one or two uses

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-26 Thread Segher Boessenkool
Hi! On Mon, Jul 25, 2022 at 03:40:40PM -0700, Guenter Roeck wrote: > On 7/25/22 13:42, Segher Boessenkool wrote: > >>What I'm wondering is if the compiler is getting confused between > >>standard and long doubles when they are both the same bit length... > > > >The compiler emits the same code (D

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-26 Thread Guenter Roeck
On 7/25/22 13:42, Segher Boessenkool wrote: On Mon, Jul 25, 2022 at 02:34:08PM -0500, Timothy Pearson wrote: Further digging shows that the build failures only occur with compilers that default to 64-bit long double. Where the heck do we have 'long double' things anywhere in the kernel? I tri

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-26 Thread Michael Ellerman
Guenter Roeck writes: > On 7/25/22 13:42, Segher Boessenkool wrote: >> On Mon, Jul 25, 2022 at 02:34:08PM -0500, Timothy Pearson wrote: > Further digging shows that the build failures only occur with compilers > that default to 64-bit long double. Where the heck do we have 'long

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Segher Boessenkool
On Mon, Jul 25, 2022 at 02:34:08PM -0500, Timothy Pearson wrote: > >> Further digging shows that the build failures only occur with compilers > >> that default to 64-bit long double. > > > > Where the heck do we have 'long double' things anywhere in the kernel? > > > > I tried to grep for it, and

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Timothy Pearson
Timothy Pearson" > Sent: Monday, July 25, 2022 2:19:57 PM > Subject: Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc > On Mon, Jul 25, 2022 at 5:39 AM Michael Ellerman wrote: >> >> Further digging shows that the build failures only occur with compilers >> that

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Linus Torvalds
On Mon, Jul 25, 2022 at 5:39 AM Michael Ellerman wrote: > > Further digging shows that the build failures only occur with compilers > that default to 64-bit long double. Where the heck do we have 'long double' things anywhere in the kernel? I tried to grep for it, and failed miserably. I found s

RE: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Deucher, Alexander
ering.com; > alexdeuc...@gmail.com; torva...@linux-foundation.org; linux@roeck- > us.net > Subject: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc > > Commit d11219ad53dc ("amdgpu: disable powerpc support for the newer > display engine") disabled the DCN driver for all o

Re: [PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Dan Horák
On Mon, 25 Jul 2022 22:39:18 +1000 Michael Ellerman wrote: > Commit d11219ad53dc ("amdgpu: disable powerpc support for the newer > display engine") disabled the DCN driver for all of powerpc due to > unresolved build failures with some compilers. > > Further digging shows that the build failures

[PATCH] drm/amdgpu: Re-enable DCN for 64-bit powerpc

2022-07-25 Thread Michael Ellerman
Commit d11219ad53dc ("amdgpu: disable powerpc support for the newer display engine") disabled the DCN driver for all of powerpc due to unresolved build failures with some compilers. Further digging shows that the build failures only occur with compilers that default to 64-bit long double. Both th