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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [bisected] R9 290 low performance in Linux 4.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97260#c16">Comment # 16</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [bisected] R9 290 low performance in Linux 4.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97260">bug 97260</a>
from <span class="vcard"><a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> <span class="fn">Alex Deucher</span></a>
</span></b>
<pre>Does just reverting this chunk fix the issue?
@@ -1630,6 +1631,9 @@ int radeon_modeset_init(struct radeon_device *rdev)
rdev->ddev->mode_config.funcs = &radeon_mode_funcs;
+ if (radeon_use_pflipirq == 2 && rdev->family >= CHIP_R600)
+ rdev->ddev->mode_config.async_page_flip = true;
+
if (ASIC_IS_DCE5(rdev)) {
rdev->ddev->mode_config.max_width = 16384;
rdev->ddev->mode_config.max_height = 16384;</pre>
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