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[Xen-devel] ioperm problem
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] ioperm problem |
| From: | Pavel Matěja <pavel@xxxxxxxxxx> |
| Date: | Sun, 13 Nov 2011 22:19:06 +0100 |
| Delivery-date: | Sun, 13 Nov 2011 13:20:28 -0800 |
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Hi,
I'm trying to port AMD VGA passthru patch to the latest XEN and vanila kernel
and I got SIGSEGV in
static void ati_hw_out(uint16_t hport, uint32_t data)
{
ioperm(gfx_info.host_pio_base, gfx_info.pio_size, 1);
asm volatile ("out %1, %0"::"Nd"(hport),"a"(data));
ioperm(gfx_info.host_pio_base, gfx_info.pio_size, 0);
}
I tried old 2.6.32 XEN kernel and there is no such problem.
It looks related to arch/x86/kernel/ioport.c but I'm not sure.
Is anyone here familiar with that code?
--
Pavel Mateja
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