Messages in this thread | | | Date | Fri, 23 Nov 2018 22:07:39 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/TSC: Use RDTSCP |
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On Fri, Nov 23, 2018 at 01:03:25PM -0800, Guenter Roeck wrote: > It is a cut off screen log. x86 boots change xterm configuration from > wrap to non-wrap, and I did a cut-and-paste instead of copying the log > to a file. Sorry for that.
No worries.
It was a head-scratcher though because look what it decodes to with the 'b':
[ 0.854209] Code: 90 90 90 90 90 90 90 a1 84 37 11 cd c3 8d b4 26 00 00 00 00 8d 76 00 c3 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 90 55 89 e5 <0f> ae f0b 0f 31 5d c3 8d b6 00 00 00 00 55 89 e5 57 31 ff 56 53 89 All code ======== 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: a1 84 37 11 cd mov 0xcd113784,%eax c: c3 ret d: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi 14: 8d 76 00 lea 0x0(%esi),%esi 17: c3 ret 18: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi 1f: 8d b4 26 00 00 00 00 lea 0x0(%esi,%eiz,1),%esi 26: 90 nop 27: 55 push %ebp 28: 89 e5 mov %esp,%ebp 2a:* 0f ae 0b fxrstor (%ebx) <-- trapping instruction 2d: 0f 31 rdtsc 2f: 5d pop %ebp 30: c3 ret
FXRSTOR?!?!?
:-)
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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