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[Xen-devel] Re: fast system calls

  • To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "pallavi jk" <pallutai@xxxxxxxxx>
  • Date: Sat, 27 Dec 2008 14:20:45 +0530
  • Cc:
  • Delivery-date: Sat, 27 Dec 2008 00:51:17 -0800
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Thanx a lot Jeremy!

In addition to removing the special case for 0x80 in arch/x86/traps.c:do_set_trap_table(), will I also have to define an entry point in xen/arch/x86/x86_32/entry.S as ENTRY(system_call)  ??

Could you please tell me other required modifications that I will have to make?


On Sat, Dec 27, 2008 at 12:33 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
pallavi jk wrote:
I want to modify xen 3.3.0 so that control transfers to xen after system calls. How can I disable fast system call handlers, so that int 0x80h functions just like all other interrupts.

It should just be a matter of removing the special case for 0x80 in arch/x86/traps.c:do_set_trap_table().


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