https://bugzilla.kernel.org/show_bug.cgi?id=206987 --- Comment #37 from krakopo@xxxxxxxxxxxxxx --- I do see ldmxcsr in the disassembly: ffffffff81038870 <kernel_fpu_begin>: ffffffff81038870: e8 9b 07 03 00 callq ffffffff81069010 <__fentry__> ffffffff81038875: 48 83 ec 10 sub $0x10,%rsp ffffffff81038879: bf 01 00 00 00 mov $0x1,%edi ffffffff8103887e: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax ffffffff81038885: 00 00 ffffffff81038887: 48 89 44 24 08 mov %rax,0x8(%rsp) ffffffff8103888c: 31 c0 xor %eax,%eax ffffffff8103888e: c7 44 24 04 00 00 00 movl $0x0,0x4(%rsp) ffffffff81038895: 00 ffffffff81038896: e8 35 ae 08 00 callq ffffffff810c36d0 <preempt_count_add> ffffffff8103889b: e8 80 fd ff ff callq ffffffff81038620 <irq_fpu_usable> ffffffff810388a0: 65 8a 05 b1 f2 fd 7e mov %gs:0x7efdf2b1(%rip),%al # 17b58 <in_kernel_fpu> ffffffff810388a7: 65 c6 05 a9 f2 fd 7e movb $0x1,%gs:0x7efdf2a9(%rip) # 17b58 <in_kernel_fpu> ffffffff810388ae: 01 ffffffff810388af: 65 48 8b 3c 25 c0 7b mov %gs:0x17bc0,%rdi ffffffff810388b6: 01 00 ffffffff810388b8: f6 47 26 20 testb $0x20,0x26(%rdi) ffffffff810388bc: 74 3c je ffffffff810388fa <kernel_fpu_begin+0x8a> ffffffff810388be: 48 c7 c7 57 43 40 82 mov $0xffffffff82404357,%rdi ffffffff810388c5: e8 46 41 9c 00 callq ffffffff819fca10 <__this_cpu_preempt_check> ffffffff810388ca: c7 44 24 04 80 1f 00 movl $0x1f80,0x4(%rsp) ffffffff810388d1: 00 ffffffff810388d2: 65 48 c7 05 82 f2 fd movq $0x0,%gs:0x7efdf282(%rip) # 17b60 <fpu_fpregs_owner_ctx> ffffffff810388d9: 7e 00 00 00 00 ffffffff810388de: 0f ae 54 24 04 ldmxcsr 0x4(%rsp) ffffffff810388e3: db e3 fninit ffffffff810388e5: 48 8b 44 24 08 mov 0x8(%rsp),%rax ffffffff810388ea: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax ffffffff810388f1: 00 00 ffffffff810388f3: 75 20 jne ffffffff81038915 <kernel_fpu_begin+0xa5> ffffffff810388f5: 48 83 c4 10 add $0x10,%rsp ffffffff810388f9: c3 retq ffffffff810388fa: 48 8b 07 mov (%rdi),%rax ffffffff810388fd: f6 c4 40 test $0x40,%ah ffffffff81038900: 75 bc jne ffffffff810388be <kernel_fpu_begin+0x4e> ffffffff81038902: f0 80 4f 01 40 lock orb $0x40,0x1(%rdi) ffffffff81038907: 48 81 c7 00 1b 00 00 add $0x1b00,%rdi ffffffff8103890e: e8 5d fd ff ff callq ffffffff81038670 <copy_fpregs_to_fpstate> ffffffff81038913: eb a9 jmp ffffffff810388be <kernel_fpu_begin+0x4e> ffffffff81038915: e8 36 3c 9c 00 callq ffffffff819fc550 <__stack_chk_fail> ffffffff8103891a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) And yes I do have the "sse" flag in /proc/cpuinfo. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
