On 08/20/2010 05:17 AM, Wei Yongjun wrote: > Add LDS/LES/LFS/LGS/LSS instruction emulation. > (opcode 0xc4, 0xc5, 0x0f 0xb2, 0x0f 0xb4~0xb5) > > Signed-off-by: Wei Yongjun<yj...@cn.fujitsu.com> > --- > v1 -> v2: mask LES/LDS as No64.
The whole "case SrcMemFAddr" should refuse a register operand, so that "JMP FAR PTR reg" (0xff 0xeb for example) and "LDS reg, reg" (0xc4 0xc3), would raise a #UD. I'm pretty sure it is handled incorrectly right now, and I'm wondering if the resulting access to ctxt->decode->src.valptr would allow a small information leak from the kernel... This bug is preexisting however, so I think it can be done as a follow-up patch. Thanks! Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
