On Fri, Dec 11, 2015 at 2:20 PM, Dan Williams <dan.j.willi...@intel.com> wrote: > On Fri, Dec 11, 2015 at 2:17 PM, Luck, Tony <tony.l...@intel.com> wrote: >>> Also, would it be more straightforward if the mcexception landing pad >>> looked up the va -> pa mapping by itself? Or is that somehow not >>> reliable? >> >> If we did get all the above right, then we could have >> target use virt_to_phys() to convert to physical ... >> I don't see that this part would be a problem. > > virt_to_phys() implies a linear address. In the case of the use in > the pmem driver we'll be using an ioremap()'d address off somewherein > vmalloc space.
There's always slow_virt_to_phys. Note that I don't fundamentally object to passing the pa to the fixup handler. I just think we should try to disentangle that from figuring out what exactly the failure was. Also, are there really PCOMMIT-capable CPUs that still forcibly broadcast MCE? If, so, that's unfortunate. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
