IRC channel logs

<damo22>[ 1.6000050] ugen0 at uhub0 port 1

<damo22>[ 1.6000050] ugen0: QEMU (0x46f4) QEMU USB HARDDRIVE (0x0001), rev 3.00/0.00,

<damo22>ok i need symbols

<youpi>jrtc27: maybe you might have an idea about it: when memcpy is using avx' vmovdqu to read from vga text memory at 0xb8000 we are getting an invalid opcode trap

<youpi>accessing the vga memory without avx works fine. accessing other non-vga memory with avx works fine

<youpi>the page table flags are the same

<youpi>this is under kvm

<youpi>ah, even with kvm it'd still have to trap into qemu, and it could be qemu that doesn't support avx on vga memory?

<youpi>but how is linux not affected by such issue :)

<youpi>ah, it is, actually...

<youpi>so we do have to carefully read/write that memory

<youpi>(it's unfortunate since without virtualization it does work fine)

IRC channel logs

2025-06-30.log