Hi Roger, > -----Original Message----- > From: Roger Pau Monne <[email protected]> > Subject: [PATCH for-4.17] Revert "x86/HVM: also dump stacks from > show_execution_state()" > > This reverts commit adb715db698bc8ec3b88c24eb88b21e9da5b6c07. > > The dumping of stacks for HVM guests is problematic, since it requires > taking the p2m lock in order to walk the guest page tables and the > p2m. > > The suggested solution to the issue is to introduce and use a lockless > p2m walker, that relies on being executed with interrupts disabled in > order to prevent any p2m pages from being freed while doing the > walk. > > Note that modifications of p2m entries are already done atomically in > order to prevent the hardware walker from seeing partially updated > values. > > Signed-off-by: Roger Pau Monné <[email protected]>
Release-acked-by: Henry Wang <[email protected]> Kind regards, Henry
