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SubjectRe: [PATCH v15 0/4] KASAN core changes for ppc64 radix KASAN
On Thu, Jun 17, 2021 at 07:30:28PM +1000, Daniel Axtens wrote:
> Building on the work of Christophe, Aneesh and Balbir, I've ported
> KASAN to 64-bit Book3S kernels running on the Radix MMU. I've been
> trying this for a while, but we keep having collisions between the
> kasan code in the mm tree and the code I want to put in to the ppc
> tree.
> This series just contains the kasan core changes that we need. These
> can go in via the mm tree. I will then propose the powerpc changes for
> a later cycle. (The most recent RFC for the powerpc changes is in the
> v12 series at
> )
> v15 applies to next-20210611. There should be no noticeable changes to
> other platforms.
> Changes since v14: Included a bunch of Reviewed-by:s, thanks
> Christophe and Marco. Cleaned up the build time error #ifdefs, thanks
> Christophe.
> Changes since v13: move the MAX_PTR_PER_* definitions out of kasan and
> into pgtable.h. Add a build time error to hopefully prevent any
> confusion about when the new hook is applicable. Thanks Marco and
> Christophe.
> Changes since v12: respond to Marco's review comments - clean up the
> help for ARCH_DISABLE_KASAN_INLINE, and add an arch readiness check to
> the new granule poisioning function. Thanks Marco.
> Daniel Axtens (4):
> kasan: allow an architecture to disable inline instrumentation
> kasan: allow architectures to provide an outline readiness check
> mm: define default MAX_PTRS_PER_* in include/pgtable.h
> kasan: use MAX_PTRS_PER_* for early shadow tables

The series seems reasonable

Reviewed-by: Balbir Singh <>

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