diff mbox series

[v12,02/31] x86/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT

Message ID 20190416134522.17540-3-ldufour@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series Speculative page faults | expand

Commit Message

Laurent Dufour April 16, 2019, 1:44 p.m. UTC 
Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT which turns on the
Speculative Page Fault handler when building for 64bit.

Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Comments

Jerome Glisse April 18, 2019, 9:48 p.m. UTC | #1 
On Tue, Apr 16, 2019 at 03:44:53PM +0200, Laurent Dufour wrote:
> Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT which turns on the
> Speculative Page Fault handler when building for 64bit.
> 
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>

I think this patch should be move as last patch in the serie so that
the feature is not enabled mid-way without all the pieces ready if
someone bisect. But i have not review everything yet so maybe it is
fine.

Reviewed-by: Jérôme Glisse <jglisse@redhat.com>

> ---
>  arch/x86/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 0f2ab09da060..8bd575184d0b 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -30,6 +30,7 @@ config X86_64
>  	select SWIOTLB
>  	select X86_DEV_DMA_OPS
>  	select ARCH_HAS_SYSCALL_WRAPPER
> +	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
>  
>  #
>  # Arch settings
> -- 
> 2.21.0
>
diff mbox series

Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0f2ab09da060..8bd575184d0b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -30,6 +30,7 @@  config X86_64
 	select SWIOTLB
 	select X86_DEV_DMA_OPS
 	select ARCH_HAS_SYSCALL_WRAPPER
+	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
 
 #
 # Arch settings