[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] x86/xen: Fix 32-bit PV guests's usage of kernel_stack
>>> On 09.04.14 at 16:06, <boris.ostrovsky@xxxxxxxxxx> wrote: > --- a/arch/x86/xen/xen-asm_32.S > +++ b/arch/x86/xen/xen-asm_32.S > @@ -88,7 +88,11 @@ ENTRY(xen_iret) > * avoid having to reload %fs > */ > #ifdef CONFIG_SMP > + pushw %fs > + movl $(__KERNEL_PERCPU), %eax > + movl %eax, %fs > GET_THREAD_INFO(%eax) > + popw %fs I don't think it's guaranteed that this can't fault. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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