Messages in this thread | | | Subject | Re: [RFC PATCH 2/5] entry: Add calls for save/restore auxiliary pt_regs | From | Rik van Riel <> | Date | Fri, 05 Aug 2022 14:34:48 -0400 |
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On Fri, 2022-08-05 at 10:30 -0700, ira.weiny@intel.com wrote: > From: Ira Weiny <ira.weiny@intel.com> > > Some architectures have auxiliary pt_regs space available to store > information on the stack during exceptions. This information is > easier > to obtain and store within C code rather than in arch specific > assembly. > > Define empty calls to architecture specific save and restore > auxiliary > pt_regs functions. Call these functions on generic entry/exit. > > NOTE: Due to the split nature of the Xen exit code > irqentry_exit_cond_resched() requires an unbalanced call to > arch_restore_aux_pt_regs(). > > Cc: Rik van Riel <riel@surriel.com> > Cc: Dave Hansen <dave.hansen@linux.intel.com> > Cc: Borislav Petkov <bp@alien8.de> > Signed-off-by: Ira Weiny <ira.weiny@intel.com> > Acked-by: Rik van Riel <riel@surriel.com>
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