Re: [Linux-ia64] [PATCH] MCA recovery for TLB faults for 2.4

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2003-05-31 11:34:24
>>>>> On Wed, 28 May 2003 13:35:53 -0700, "Luck, Tony" <tony.luck@intel.com> said:

  Tony> The underlying algorithm is to save information about what
  Tony> each of the ITR/DTR registers is mapping, then at MCA time we
  Tony> can purge the whole TLB (TC and TR) and reload the TR
  Tony> registers before jumping to virtual mode.

Are you just blindly trusting that memory is still correct after
getting a TLB error report?  Wouldn't you want to have a checksum to
validate that the list of saved translations is probably correct.
Otherwise, it seems to me the TLB purge could make a bad situation
worse.

	--david
Received on Fri May 30 18:35:57 2003

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