Re: [PATCH v3 3/3] mm/armv6: work around armv6 cmpxchg support issue

在 2020/9/1 下午9:17, Matthew Wilcox 写道: > On Tue, Sep 01, 2020 at 02:30:51PM +0800, Alex Shi wrote: >> seems there are couples archs can not do cmpxchg1 >> So update the patch here. And it's easy to fix if more arch issue find here. > >> +/* >> + * cmpxchg only support 32-bits operands on the fol

Re: [PATCH v3 3/3] mm/armv6: work around armv6 cmpxchg support issue

On Tue, Sep 01, 2020 at 02:30:51PM +0800, Alex Shi wrote: > seems there are couples archs can not do cmpxchg1 > So update the patch here. And it's easy to fix if more arch issue find here. > +/* > + * cmpxchg only support 32-bits operands on the following archs ARMv6, > SPARC32 > + * sh2, XTENSA.

Re: [PATCH v3 3/3] mm/armv6: work around armv6 cmpxchg support issue

seems there are couples archs can not do cmpxchg1 So update the patch here. And it's easy to fix if more arch issue find here. >From cdf98ae7b5e83bb7210c927d4749f62fee4ed115 Mon Sep 17 00:00:00 2001 From: Alex Shi Date: Mon, 31 Aug 2020 15:41:20 +0800 Subject: [PATCH v4 3/3] mm/pageblock: work ar

[PATCH v3 3/3] mm/armv6: work around armv6 cmpxchg support issue

Armv6 can not simulate cmpxchg1 func, so we have to use cmpxchg4 on it. arm-linux-gnueabi-ld: mm/page_alloc.o: in function `set_pfnblock_flags_mask': (.text+0x32b4): undefined reference to `__bad_cmpxchg' arm-linux-gnueabi-ld: (.text+0x32e0): undefined reference to `__bad_cmpxchg' Report