Messages in this thread | | | From | Giridhar Pemmasani <> | Subject | Re: RFC: i386: kill !4KSTACKS | Date | Tue, 06 Sep 2005 13:23:51 -0400 |
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Jan Kiszka wrote:
> The only way I see is to switch stacks back on ndiswrapper API entry. > But managing all those stacks correctly is challenging, as you will > likely not want to create a new stack on each switching point. Rather,
This is what I had in mind before I saw this thread here. I, in fact, did some work along those lines, but it is even more complicated than you mentioned here: Windows uses different calling conventions (STDCALL, FASTCALL, CDECL) so switching stacks by copying arguments/results gets complicated. So I gave up on that approach. For X86-64 drivers we use similar approach, but for that there is only one calling convention and we don't need to switch stacks, but reshuffle arguments on stack / in registers.
I am still hoping that Andi's approach is possible (I don't understand how we can make kernel see current info from private stack).
Giri
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