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Date: Fri, 16 Dec 2016 17:10:05 +0800 From: zhong jiang <zhongjiang@...wei.com> To: <catalin.marinas@....com>, <will.deacon@....com>, <rrichter@...ium.com>, <mark.rutland@....com>, <arnd@...db.de>, <ard.biesheuvel@...aro.org>, <robh+dt@...nel.org>, <dwoods@...hip.com>, <jeremy.linton@....com> CC: <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org> Subject: Re: [RESEND PATCH 2/2] arm64: make WANT_HUGE_PMD_SHARE depends on HUGETLB_PAGE On 2016/12/14 22:19, zhongjiang wrote: > From: zhong jiang <zhongjiang@...wei.com> > > when HUGETLB_PAGE is disable, WANT_HUGE_PMD_SHARE contains the > fuctions should not be use. therefore, we add the dependency. > > Signed-off-by: zhong jiang <zhongjiang@...wei.com> > --- > arch/arm64/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 969ef88..694ca73 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -640,6 +640,7 @@ config SYS_SUPPORTS_HUGETLBFS > > config ARCH_WANT_HUGE_PMD_SHARE > def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36) > + depends on HUGETLB_PAGE > > config ARCH_HAS_CACHE_LINE_SIZE > def_bool y Hi, I still think it is a issue. Perhaps above changelog is unclear. Further explain is as follows. when hugetlb_pages is disable and arch_want_huge_pmd_share is enable, we maybe call huge_pmd_sahre in hugetlbpage.c, but the function actually is not definition as it is not exported. is it right ?? Thanks zhongjiang
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