search for: gfx_info

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2011 Nov 13
8
ioperm problem
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...