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Message-Id: <1520963994-28477-4-git-send-email-ldufour@linux.vnet.ibm.com>
Date: Tue, 13 Mar 2018 18:59:33 +0100
From: Laurent Dufour <ldufour@...ux.vnet.ibm.com>
To: paulmck@...ux.vnet.ibm.com, peterz@...radead.org,
akpm@...ux-foundation.org, kirill@...temov.name,
ak@...ux.intel.com, mhocko@...nel.org, dave@...olabs.net,
jack@...e.cz, Matthew Wilcox <willy@...radead.org>,
benh@...nel.crashing.org, mpe@...erman.id.au, paulus@...ba.org,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, hpa@...or.com,
Will Deacon <will.deacon@....com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
Andrea Arcangeli <aarcange@...hat.com>,
Alexei Starovoitov <alexei.starovoitov@...il.com>,
kemi.wang@...el.com, sergey.senozhatsky.work@...il.com,
Daniel Jordan <daniel.m.jordan@...cle.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
haren@...ux.vnet.ibm.com, khandual@...ux.vnet.ibm.com,
npiggin@...il.com, bsingharora@...il.com,
Tim Chen <tim.c.chen@...ux.intel.com>,
linuxppc-dev@...ts.ozlabs.org, x86@...nel.org
Subject: [PATCH v9 03/24] powerpc/mm: Define CONFIG_SPECULATIVE_PAGE_FAULT
Define CONFIG_SPECULATIVE_PAGE_FAULT for BOOK3S_64 and SMP. 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()
Signed-off-by: Laurent Dufour <ldufour@...ux.vnet.ibm.com>
---
arch/powerpc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 73ce5dd07642..acf2696a6505 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -233,6 +233,7 @@ config PPC
select OLD_SIGACTION if PPC32
select OLD_SIGSUSPEND
select SPARSE_IRQ
+ select SPECULATIVE_PAGE_FAULT if PPC_BOOK3S_64 && SMP
select SYSCTL_EXCEPTION_TRACE
select VIRT_TO_BUS if !PPC64
#
--
2.7.4
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