| Date | Fri, 18 Jan 2019 16:10:37 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH v8 08/26] arm64: Make PMR part of task context |
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On Tue, Jan 08, 2019 at 02:07:26PM +0000, Julien Thierry wrote: > In order to replace PSR.I interrupt disabling/enabling with ICC_PMR_EL1 > interrupt masking, ICC_PMR_EL1 needs to be saved/restored when > taking/returning from an exception. This mimics the way hardware saves > and restores PSR.I bit in spsr_el1 for exceptions and ERET. > > Add PMR to the registers to save in the pt_regs struct upon kernel entry, > and restore it before ERET. Also, initialize it to a sane value when > creating new tasks. > > Signed-off-by: Julien Thierry <julien.thierry@arm.com> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Oleg Nesterov <oleg@redhat.com> > Cc: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
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