restructure results

1 files changed, 83 insertions, 0 deletions

diff --git a/results/classifier/zero-shot/105/socket/796202 b/results/classifier/zero-shot/105/socket/796202
new file mode 100644
index 000000000..ca94772e6
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+++ b/results/classifier/zero-shot/105/socket/796202
@@ -0,0 +1,83 @@
+socket: 0.871
+instruction: 0.871
+graphic: 0.836
+other: 0.827
+boot: 0.813
+network: 0.805
+device: 0.803
+semantic: 0.794
+vnc: 0.793
+mistranslation: 0.694
+assembly: 0.558
+KVM: 0.478
+
+Doing a 64 bit load from a 32 bit local APIC register is allowed
+
+Doing
+
+u64 lapic_idregister = (u64) fix_to_virt(FIX_APIC_BASE) + 0x20;
+
+and later in an interrupt handler
+
+movq (lapic_idregister), %rcx
+movq (%rcx), %rcx
+
+in a linux kernel module works in qemu 0.13.91 but not on real hardware (it simply reboots).
+On real hardware only
+
+movl (%rcx), %ecx
+
+works (also in qemu).
+
+Commandline:
+qemu-system-x86_64 \
+		-kernel $LINUXDIR/arch/x86_64/boot/bzImage \
+		-hda $BUILDROOTDIR/output/images/rootfs.ext2 \
+		-append "root=/dev/sda rw rootfstype=ext2 maxcpus=4" \
+		-cpu phenom \
+		-smp 4 \
+		-gdb tcp::1234 \
+		-net nic -net user
+
+Guest:
+Vanilla Linux Kernel 2.6.37.6 64-bit with buildroot
+
+Mikael Pettersson from the linux kernel mailinglist told me it's an accepts-invalid bug in qemu.
+
+On Sun, Jun 12, 2011 at 4:03 PM, Robert Uhl <email address hidden> wrote:
+> Public bug reported:
+>
+> Doing
+>
+> u64 lapic_idregister = (u64) fix_to_virt(FIX_APIC_BASE) + 0x20;
+>
+> and later in an interrupt handler
+>
+> movq (lapic_idregister), %rcx
+> movq (%rcx), %rcx
+>
+> in a linux kernel module works in qemu 0.13.91 but not on real hardware (it simply reboots).
+> On real hardware only
+>
+> movl (%rcx), %ecx
+>
+> works (also in qemu).
+
+Thank you for the report. Currently QEMU devices only provide access
+methods up to 32 bits, a 64 bit access is emulated with two 32 bit
+accesses. So it is not possible to handle a 32 bit access differently
+from a 64 bit one for now.
+
+So far this hasn't been considered to be a problem for x86, though it
+is clearly not correct for Sparc and Alpha. This report shows that it
+is necessary to add 64 bit access methods (or otherwise handle 64 bit
+accesses more realistically) since x86 is also affected.
+
+Adding the 64 bit method would be a major refactoring though and there
+are other designs possible.
+
+
+Triaging old bug tickets ... can you somehow still reproduce this problem with the latest version of QEMU (currently v2.9), or could we close this ticket nowadays?
+
+[Expired for QEMU because there has been no activity for 60 days.]
+