<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [hsw] GPU hang on first context use (after long uptime)" href="https://bugs.freedesktop.org/show_bug.cgi?id=97020#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [hsw] GPU hang on first context use (after long uptime)" href="https://bugs.freedesktop.org/show_bug.cgi?id=97020">bug 97020</a> from <a class="email" href="mailto:yann.argotti@intel.com" title="yann <yann.argotti@intel.com>"> yann</a> <pre>Could it be linked to gem/gtt ? Seeing in kernel log several message on alignment: [143743.427883] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [143743.427932] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [143743.428074] i915 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment and in dump (if I am correct about current render ring HEAD) we have IPEHR 0x0c000000 0x0080dc34: 0x11000005: MI_LOAD_REGISTER_IMM 0x0080dc38: 0x00012050: dword 1 0x0080dc3c: 0x00010001: dword 2 0x0080dc40: 0x00022050: dword 3 0x0080dc44: 0x00010001: dword 4 0x0080dc48: 0x0001a050: dword 5 0x0080dc4c: 0x00010001: dword 6 0x0080dc50: 0x00000000: MI_NOOP 0x0080dc54: 0x0c000000: MI_SET_CONTEXT 0x0080dc58: 0x798dd10c: gtt offset = 0x798dd000 0x0080dc5c: HEAD 0x00000000: MI_NOOP Bad length (7) in MI_LOAD_REGISTER_IMM, [3, 3] 0x0080dc60: 0x11000005: MI_LOAD_REGISTER_IMM 0x0080dc64: 0x00012050: dword 1 0x0080dc68: 0x00010000: dword 2 0x0080dc6c: 0x00022050: dword 3 0x0080dc70: 0x00010000: dword 4 0x0080dc74: 0x0001a050: dword 5 0x0080dc78: 0x00010000: dword 6 0x0080dc7c: 0x04000001: MI_ARB_ON_OFF</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>