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i965: Require Kernel 3.6 for Gen4-5 platforms.

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We've already required Kernel 3.6 on Gen6+ since Mesa 9.2 (May 2013,
commit 92d2f5acfa).  It seems reasonable
to require it for Gen4-5 as well, bumping the requirement from 2.6.39.

This is necessary for glClientWaitSync with a timeout to work, which
is a feature we expose on Gen4-5.  Without it, we would fall back to an
infinite wait, which is pretty bad.

See kernel commit 172cf15d18889313bf2c3bfb81fcea08369274ef in 3.6+.

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke 2017-03-22 15:20:51 -07:00
parent 99dd3d1c3b
commit 088449487e
2 changed files with 3 additions and 3 deletions
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2
src/mesa/drivers/dri/i965/brw_context.c
View file

@ -1097,7 +1097,7 @@ brwCreateContext(gl_api api,
brw->hw_ctx = drm_intel_gem_context_create(brw->bufmgr);
if (!brw->hw_ctx) {
fprintf(stderr, "Gen6+ requires Kernel 3.6 or later.\n");
fprintf(stderr, "Failed to create hardware context.\n");
intelDestroyContext(driContextPriv);
return false;
}

4
src/mesa/drivers/dri/i965/intel_screen.c
View file

@ -1274,8 +1274,8 @@ intel_init_bufmgr(struct intel_screen *screen)
drm_intel_bufmgr_gem_enable_fenced_relocs(screen->bufmgr);
if (!intel_get_boolean(screen, I915_PARAM_HAS_RELAXED_DELTA)) {
fprintf(stderr, "[%s: %u] Kernel 2.6.39 required.\n", __func__, __LINE__);
if (!intel_get_boolean(screen, I915_PARAM_HAS_WAIT_TIMEOUT)) {
fprintf(stderr, "[%s: %u] Kernel 3.6 required.\n", __func__, __LINE__);
return false;
}