Re: [Xen-devel] Re: 2.6.28.7 domU: 32-bit emulation seems to be broken

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Sven Köhler wrote:
> Jeremy Fitzhardinge schrieb:
>   
> > Has it ever worked?  If so, what kernel version did it stop working at? 
> >     
> I've just tried a good old non-pv_ops 2.6.18 kernel:
>
> I ran the same binary file, that segfaults on 2.6.28.7.
> It runs just fine on 2.6.18.
>
> I haven't tested any other pc_ops kernel version. I'm not sure, that it
> ever worked with these kernel. Which was the first kernel version, that
> had domU support? 2.6.28.0 ?
>
>   
Does this patch help?

diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index e4baa06..3ea8299 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -400,7 +400,6 @@ ENTRY(ia32_syscall)
        /*CFI_REL_OFFSET        rflags,EFLAGS-RIP*/
        /*CFI_REL_OFFSET        cs,CS-RIP*/
        CFI_REL_OFFSET  rip,RIP-RIP
-       PARAVIRT_ADJUST_EXCEPTION_FRAME
        SWAPGS
        /*
         * No need to follow this irqs on/off section: the syscall

        J


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