Messages in this thread | | | Date | Tue, 18 Oct 2016 12:17:43 -0500 | From | Josh Poimboeuf <> | Subject | Re: [PATCH v2 0/9] x86/entry/head: standardize the end of the stack |
| |
On Wed, Sep 21, 2016 at 04:03:58PM -0500, Josh Poimboeuf wrote: > v2: > - keep 'restore_all' label in "x86/entry/head/32: use local labels" > > --- > > Thanks to all the recent x86 entry code refactoring, most tasks' kernel > stacks start at the same offset right below their saved pt_regs, > regardless of which syscall was used to enter the kernel. That creates > a nice convention which makes it straightforward to identify the end of > the stack, which can be useful [*] for the unwinder. > > But there a few places where tasks don't yet follow the convention. > This patch set finishes the job. > > [*] This will be useful for three upcoming proposed features: > > - Detecting corrupt stacks in the unwinder (which will also be a force > for ensuring this end of stack convention continues to be followed in > the future). > > - Printing all saved pt_regs on the stack during an oops/warning. > > - Validating stacks in the livepatch consistency model.
Ping?
-- Josh
| |