08.03.2017 03:32, Ricardo Neri пишет:
These are the instructions covered by UMIP: * SGDT - Store Global Descriptor Table * SIDT - Store Interrupt Descriptor Table * SLDT - Store Local Descriptor Table * SMSW - Store Machine Status Word * STR - Store Task Register This patchset initially treated tasks running in virtual-8086 mode as a special case. However, I received clarification that DOSEMU does not support applications that use these instructions.
Yes, this is the case. But at least in the past there was an attempt to support SLDT as it is used by an ancient pharlap DOS extender (currently unsupported by dosemu1/2). So how difficult would it be to add an optional possibility of delivering such SIGSEGV to userspace so that the kernel's dummy emulation can be overridden? It doesn't need to be a matter of this particular patch set, i.e. this proposal should not trigger a v7 resend of all 21 patches. :) But it would be useful for the future development of dosemu2. -- To unsubscribe from this list: send the line "unsubscribe linux-msdos" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html