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Diffstat (limited to 'results/classifier/111/review/996798')
| -rw-r--r-- | results/classifier/111/review/996798 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/results/classifier/111/review/996798 b/results/classifier/111/review/996798 new file mode 100644 index 00000000..056bce31 --- /dev/null +++ b/results/classifier/111/review/996798 @@ -0,0 +1,47 @@ +device: 0.168 +semantic: 0.167 +vnc: 0.147 +other: 0.109 +graphic: 0.074 +performance: 0.050 +files: 0.049 +socket: 0.046 +permissions: 0.043 +PID: 0.043 +network: 0.032 +debug: 0.030 +boot: 0.030 +KVM: 0.010 +debug: 0.239 +files: 0.141 +performance: 0.116 +other: 0.110 +PID: 0.108 +device: 0.062 +semantic: 0.060 +boot: 0.042 +network: 0.041 +socket: 0.025 +graphic: 0.017 +vnc: 0.016 +KVM: 0.012 +permissions: 0.011 + +Incorrect order of task switching + +In Intel specifications (http://download.intel.com/design/processor/manuals/253668.pdf 7.3), we can see: + + 8. Saves the state of the current (old) task in the current task’s TSS. + +… + + 11. Loads the task register with the segment selector and descriptor for the new task's TSS. + +But, in QEMU code (https://raw.github.com/qemu/QEMU/v1.0/target-i386/op_helper.c :375), the order is reversed: TSS registers & segments loads BEFORE save old task state. + +Some bug in VirtualBox: https://www.virtualbox.org/ticket/10532 + +Is problem still reproducable with the latest version of QEMU, or has it been fixed nowadays? + +[Expired for QEMU because there has been no activity for 60 days.] + |