Messages in this thread | | | From | Alexey Brodkin <> | Subject | Re: [PATCH] ARC: io.h: Implement reads{x}()/writes{x}() | Date | Thu, 29 Nov 2018 12:55:10 +0000 |
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Hi Jose,
On Thu, 2018-11-29 at 12:42 +0000, Jose Abreu wrote: > Some ARC CPU's do not support unaligned loads/stores. Currently, generic > implementation of reads{b/w/l}()/writes{b/w/l}() is being used with ARC. > This can lead to misfunction of some drivers as generic functions do a > plain dereference of a pointer that can be unaligned. > > Let's use {get/put}_unaligned() helper instead of plain dereference of > pointer in order to fix this. > > We do not implement readsq()/writesq() as we assume that only HS is a > 64 Bit CPU and that it supports unaligned loads/stores.
Pls note that ARC HS is still only 32-bit core at least as of today.
-Alexey
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