X11 + i915kms

[Hans Petter Selasky]

On 2020-02-04 13:33, Jan Beich wrote:
> Hans Petter Selasky <hps at selasky.org> writes:
> 
>> On 2019-12-27 12:12, Jan Beich wrote:
>>
>>> Hans Petter Selasky <hps at selasky.org> writes:
>>>
>>>> Hi,
>>>>
>>>> Just did a fresh install of X11 and stuff. I noticed the
>>>> xf86-video-intel is very sluggish unless SNA acceleration mode is
>>>> selected. Do you know anything about this? Maybe make it the default?
>>>> Or should I have used another driver?
>>> FreeBSD disabled SNA by default for compatibility with
>>> pre-SandyBridge
>>> on drm-legacy-kmod (previously, in-base drm2), see bug 214593.
>>> SNA is also unstable due to I915_USERPTR_UNSYNCHRONIZED, so you may
>>> need the patch in bug 236003.
>>
>> Does this fix the issue?
>> https://github.com/FreeBSDDesktop/kms-drm/pull/205
> 
> Yes but it needs to be applied to drm-v4.11 and drm-v4.16 as well.
> drm-v4.9 works fine as is. I've originally reported the issue
> in https://github.com/FreeBSDDesktop/kms-drm/issues/32.
> 
> However, the way you've handled LinuxKPI changes won't help on already
> released FreeBSD versions e.g.,
> 
> graphics/drm-fbsd12.0-kmod on FreeBSD 12.1:
>    drivers/gpu/drm/i915/i915_gem_userptr.c:514:7: error: implicit declaration of function 'mmget_not_zero' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
>                    if (mmget_not_zero(mm)) {
>                        ^
>    drivers/gpu/drm/i915/i915_gem_userptr.c:514:7: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
> 
> graphics/drm-fbsd11.2-kmod on FreeBSD 11.3:
>    i915_gem_userptr.c:511:7: error: implicit declaration of function 'mmget_not_zero' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
>                    if (mmget_not_zero(mm)) {
>                        ^
>    i915_gem_userptr.c:511:7: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
> 

I can MFC to the release branch too if that helps.

Do you know which branch you are using for 11 and 12 ports?

--HPS