diff mbox series

[v12,03/31] powerpc/mm: set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT

Message ID 20190416134522.17540-4-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 for BOOK3S_64. This enables
the Speculative Page Fault handler.

Support is only provide for BOOK3S_64 currently because:
- require CONFIG_PPC_STD_MMU because checks done in
  set_access_flags_filter()
- require BOOK3S because we can't support for book3e_hugetlb_preload()
  called by update_mmu_cache()

Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Comments

Jerome Glisse April 18, 2019, 9:49 p.m. UTC | #1 
On Tue, Apr 16, 2019 at 03:44:54PM +0200, Laurent Dufour wrote:
> Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for BOOK3S_64. This enables
> the Speculative Page Fault handler.
> 
> Support is only provide for BOOK3S_64 currently because:
> - require CONFIG_PPC_STD_MMU because checks done in
>   set_access_flags_filter()
> - require BOOK3S because we can't support for book3e_hugetlb_preload()
>   called by update_mmu_cache()
> 
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>

Same comment as for x86.

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

> ---
>  arch/powerpc/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 2d0be82c3061..a29887ea5383 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -238,6 +238,7 @@ config PPC
>  	select PCI_SYSCALL			if PCI
>  	select RTC_LIB
>  	select SPARSE_IRQ
> +	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if PPC_BOOK3S_64
>  	select SYSCTL_EXCEPTION_TRACE
>  	select THREAD_INFO_IN_TASK
>  	select VIRT_TO_BUS			if !PPC64
> -- 
> 2.21.0
>
diff mbox series

Patch

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2d0be82c3061..a29887ea5383 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -238,6 +238,7 @@  config PPC
 	select PCI_SYSCALL			if PCI
 	select RTC_LIB
 	select SPARSE_IRQ
+	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if PPC_BOOK3S_64
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK
 	select VIRT_TO_BUS			if !PPC64