1 files changed, 74 insertions, 0 deletions
diff --git a/results/classifier/118/graphic/661 b/results/classifier/118/graphic/661
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+++ b/results/classifier/118/graphic/661
@@ -0,0 +1,74 @@
+register: 0.977
+graphic: 0.971
+ppc: 0.921
+x86: 0.894
+performance: 0.845
+peripherals: 0.824
+kernel: 0.824
+user-level: 0.798
+network: 0.736
+socket: 0.730
+device: 0.722
+assembly: 0.719
+mistranslation: 0.715
+boot: 0.707
+debug: 0.690
+architecture: 0.690
+PID: 0.688
+semantic: 0.679
+permissions: 0.677
+files: 0.639
+vnc: 0.625
+risc-v: 0.622
+virtual: 0.601
+hypervisor: 0.595
+TCG: 0.565
+KVM: 0.545
+arm: 0.535
+VMM: 0.523
+i386: 0.508
+
+Unable to enable 5 level paging
+Description of problem:
+When attempting to set cr4.LA57, qemu just freezes on that instruction. When I say freeze I mean literally freeze, no exceptions, nothing, it just halts forever on that instruction. When this happened, the first thing I did was
+
+```
+(qemu) info registers 
+EAX=00001000 EBX=00000001 ECX=80224f08 EDX=00000000
+ESI=8034a3a0 EDI=00026520 EBP=000079f8 ESP=000079c8
+EIP=00019648 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
+ES =0020 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
+CS =0018 00000000 ffffffff 00c09a00 DPL=0 CS32 [-R-]
+SS =0020 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
+DS =0020 00000000 ffffffff 00c09300 DPL=0 DS   [-WA]
+FS =0020 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
+GS =0020 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
+LDT=0000 00000000 00000000 00008200 DPL=0 LDT
+TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
+GDT=     0000e120 00000037
+IDT=     00000000 00000000
+CR0=00000011 CR2=00000000 CR3=00000000 CR4=00000000
+DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
+DR6=00000000ffff0ff0 DR7=0000000000000400
+EFER=0000000000000000
+...
+```
+
+then using gdb to figure out what instruction it is hanging on, I set a breakpoint at 0x19648 at and ran 
+```
+(gdb) x/1 0x19648
+=> 0x19648:	mov    %rax,%cr4
+(gdb) 
+```
+
+This instruction corresponds to this LOC within limine https://github.com/limine-bootloader/limine/blob/trunk/stage23/protos/stivale.32.c#L33
+Steps to reproduce:
+1. Try to enable 5 level paging
+2. qemu freezes when trying to set cr4.LA57
+3. cry
+Additional information:
+This never happened prior to version 6.1, I test this on multiple different machines and a few of my friends 
+experienced the same issue
+
+I have not tested this on linux, however I assume it will do the same on anything else. 
+Either way, qemu should not be just halting