Messages in this thread | | | From | Andy Lutomirski <> | Date | Fri, 11 Dec 2015 12:08:05 -0800 | Subject | Re: [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas |
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On Thu, Dec 10, 2015 at 4:14 PM, Tony Luck <tony.luck@intel.com> wrote: > Extend the severity checking code to add a new context IN_KERN_RECOV > which is used to indicate that the machine check was triggered by code > in the kernel with a fixup entry. > > Add code to check for this situation and respond by altering the return > IP to the fixup address and changing the regs->ax so that the recovery > code knows the physical address of the error. Note that we also set bit > 63 because 0x0 is a legal physical address. > > Major re-work to the tail code in do_machine_check() to make all this > readable/maintainable. One functional change is that tolerant=3 no longer > stops recovery actions. Revert to only skipping sending SIGBUS to the > current process.
This is IMO much, much nicer than the old code. Thanks!
--Andy
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