2022-09-01 18:18:29

by Suren Baghdasaryan

Subject: [RFC PATCH RESEND 23/28] x86/mm: define ARCH_SUPPORTS_PER_VMA_LOCK

Set ARCH_SUPPORTS_PER_VMA_LOCK so that the per-VMA lock support can be
compiled on this architecture.

Signed-off-by: Suren Baghdasaryan <[email protected]>
---
arch/x86/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f9920f1341c8..ee19de020b27 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -27,6 +27,7 @@ config X86_64
# Options that are inherently 64-bit kernel only:
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
+ select ARCH_SUPPORTS_PER_VMA_LOCK
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_SOFT_DIRTY
select MODULES_USE_ELF_RELA
--
2.37.2.789.g6183377224-goog

2022-09-01 20:56:33

by Kent Overstreet

Subject: Re: [RFC PATCH RESEND 23/28] x86/mm: define ARCH_SUPPORTS_PER_VMA_LOCK

On Thu, Sep 01, 2022 at 10:35:11AM -0700, Suren Baghdasaryan wrote:
> Set ARCH_SUPPORTS_PER_VMA_LOCK so that the per-VMA lock support can be
> compiled on this architecture.
>
> Signed-off-by: Suren Baghdasaryan <[email protected]>
> ---
> arch/x86/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index f9920f1341c8..ee19de020b27 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -27,6 +27,7 @@ config X86_64
> # Options that are inherently 64-bit kernel only:
> select ARCH_HAS_GIGANTIC_PAGE
> select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
> + select ARCH_SUPPORTS_PER_VMA_LOCK
> select ARCH_USE_CMPXCHG_LOCKREF
> select HAVE_ARCH_SOFT_DIRTY
> select MODULES_USE_ELF_RELA

I think you could combine this with the previous path (and similarly on other
architectures) - they logically go together.

2022-09-01 23:22:22

by Suren Baghdasaryan

Subject: Re: [RFC PATCH RESEND 23/28] x86/mm: define ARCH_SUPPORTS_PER_VMA_LOCK

On Thu, Sep 1, 2022 at 1:21 PM Kent Overstreet
<[email protected]> wrote:
>
> On Thu, Sep 01, 2022 at 10:35:11AM -0700, Suren Baghdasaryan wrote:
> > Set ARCH_SUPPORTS_PER_VMA_LOCK so that the per-VMA lock support can be
> > compiled on this architecture.
> >
> > Signed-off-by: Suren Baghdasaryan <[email protected]>
> > ---
> > arch/x86/Kconfig | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index f9920f1341c8..ee19de020b27 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -27,6 +27,7 @@ config X86_64
> > # Options that are inherently 64-bit kernel only:
> > select ARCH_HAS_GIGANTIC_PAGE
> > select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
> > + select ARCH_SUPPORTS_PER_VMA_LOCK
> > select ARCH_USE_CMPXCHG_LOCKREF
> > select HAVE_ARCH_SOFT_DIRTY
> > select MODULES_USE_ELF_RELA
>
> I think you could combine this with the previous path (and similarly on other
> architectures) - they logically go together.

Thanks for the feedback! I see no downside to that, so unless there
are objections I will combine them in the next version.