On Wed, 2017-03-08 at 17:08 +0300, Stas Sergeev wrote:Why?
08.03.2017 03:32, Ricardo Neri ÐÐÑÐÑ:I suppose a umip=noemulation kernel parameter could be added in this
These are the instructions covered by UMIP:Yes, this is the case.
* 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.
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 does use the mix: 64bit process but some segmentsIt doesn't need to be a matter of this particularWould dosemu2 use 32-bit processes in order to keep segmentation? If it
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.
could use 64-bit processes, emulation is not used in this case and the
SIGSEGV is delivered to user space.