linux-kernel - linux-next: manual merge of the arm64-hugepages tree with the arm64 tree

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Date:	Mon, 17 Jun 2013 17:45:28 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Steve Capper <steve.capper@...aro.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Marc Zyngier <marc.zyngier@....com>,
	Catalin Marinas <catalin.marinas@....com>
Subject: linux-next: manual merge of the arm64-hugepages tree with the arm64
 tree

Hi Steve,

Today's linux-next merge of the arm64-hugepages tree got conflicts in
arch/arm64/include/asm/pgtable-hwdef.h and
arch/arm64/include/asm/pgtable.h between commit 363116073a26 ("arm64:
KVM: define HYP and Stage-2 translation page flags") from the arm64 tree
and commits 072b1b62a643 ("ARM64: mm: Make PAGE_NONE pages read only and
no-execute") and af07484863e0 ("ARM64: mm: THP support") from the
arm64-hugepages tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

Note that the arm64 tree version of PMD_SECT_USER used a pteval_t where I
would have expected a pmdval_t like the arm64-hugepages tree version.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

diff --cc arch/arm64/include/asm/pgtable.h
index 5588e8a,720fc4a..0000000
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@@ -76,13 -76,7 +76,13 @@@ extern pgprot_t pgprot_default
  #define PAGE_KERNEL		_MOD_PROT(pgprot_default, PTE_PXN | PTE_UXN | PTE_DIRTY)
  #define PAGE_KERNEL_EXEC	_MOD_PROT(pgprot_default, PTE_UXN | PTE_DIRTY)
  
 +#define PAGE_HYP		_MOD_PROT(pgprot_default, PTE_HYP)
 +#define PAGE_HYP_DEVICE		__pgprot(PROT_DEVICE_nGnRE | PTE_HYP)
 +
 +#define PAGE_S2			__pgprot_modify(pgprot_default, PTE_S2_MEMATTR_MASK, PTE_S2_MEMATTR(MT_S2_NORMAL) | PTE_S2_RDONLY)
 +#define PAGE_S2_DEVICE		__pgprot(PROT_DEFAULT | PTE_S2_MEMATTR(MT_S2_DEVICE_nGnRE) | PTE_S2_RDWR | PTE_UXN)
 +
- #define __PAGE_NONE		__pgprot(((_PAGE_DEFAULT) & ~PTE_TYPE_MASK) | PTE_PROT_NONE)
+ #define __PAGE_NONE		__pgprot(((_PAGE_DEFAULT) & ~PTE_TYPE_MASK) | PTE_PROT_NONE | PTE_RDONLY | PTE_PXN | PTE_UXN)
  #define __PAGE_SHARED		__pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN)
  #define __PAGE_SHARED_EXEC	__pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN)
  #define __PAGE_COPY		__pgprot(_PAGE_DEFAULT | PTE_USER | PTE_NG | PTE_PXN | PTE_UXN | PTE_RDONLY)

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