Messages in this thread | | | From | Alexander Gordeev <> | Subject | [PATCH 0/1] s390/crash: allow multi-segment iterators | Date | Wed, 6 Jul 2022 07:59:32 +0200 |
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Unlike other architectures s390 can not use copyout() and memcopy() for accessing memory and thus using copy_to_iter() now is not possible. But a fix is needed, since 'cp' routine as 'core_collector' for kdump service initiates multi-segment iterator.
The reason iterate_iovec() and __iterate_and_advance() macros copied from lib/iov_iter.c (thus introducing redundancy) is to avoid custom iterator- treating in s390 code. I doubt these macros could be turned public (i.e with a follow-up patch), so the intention is to do it like _copy_to_iter() does.
Alexander Gordeev (1): s390/crash: allow multi-segment iterators
arch/s390/kernel/crash_dump.c | 65 +++++++++++++++++++++++++++-------- 1 file changed, 50 insertions(+), 15 deletions(-)
-- 2.34.1
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