The patch titled
Subject: powerpc/mm: thread pgprot_t through create_section_mapping()
has been added to the -mm tree. Its filename is
powerpc-mm-thread-pgprot_t-through-create_section_mapping.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/powerpc-mm-thread-pgprot_t-through-create_section_mapping.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/powerpc-mm-thread-pgprot_t-through-create_section_mapping.patch
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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Subject: powerpc/mm: thread pgprot_t through create_section_mapping()
In prepartion to support a pgprot_t argument for arch_add_memory().
Link: http://lkml.kernel.org/r/20200306170846.9333-6-logang@xxxxxxxxxxxx
Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Eric Badger <ebadger@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/book3s/64/hash.h | 3 ++-
arch/powerpc/include/asm/book3s/64/radix.h | 3 ++-
arch/powerpc/include/asm/sparsemem.h | 3 ++-
arch/powerpc/mm/book3s64/hash_utils.c | 5 +++--
arch/powerpc/mm/book3s64/pgtable.c | 7 ++++---
arch/powerpc/mm/book3s64/radix_pgtable.c | 18 +++++++++++-------
arch/powerpc/mm/mem.c | 5 +++--
7 files changed, 27 insertions(+), 17 deletions(-)
--- a/arch/powerpc/include/asm/book3s/64/hash.h~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/include/asm/book3s/64/hash.h
@@ -251,7 +251,8 @@ extern int __meminit hash__vmemmap_creat
extern void hash__vmemmap_remove_mapping(unsigned long start,
unsigned long page_size);
-int hash__create_section_mapping(unsigned long start, unsigned long end, int nid);
+int hash__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
int hash__remove_section_mapping(unsigned long start, unsigned long end);
#endif /* !__ASSEMBLY__ */
--- a/arch/powerpc/include/asm/book3s/64/radix.h~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/include/asm/book3s/64/radix.h
@@ -289,7 +289,8 @@ static inline unsigned long radix__get_t
}
#ifdef CONFIG_MEMORY_HOTPLUG
-int radix__create_section_mapping(unsigned long start, unsigned long end, int nid);
+int radix__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
int radix__remove_section_mapping(unsigned long start, unsigned long end);
#endif /* CONFIG_MEMORY_HOTPLUG */
#endif /* __ASSEMBLY__ */
--- a/arch/powerpc/include/asm/sparsemem.h~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/include/asm/sparsemem.h
@@ -13,7 +13,8 @@
#endif /* CONFIG_SPARSEMEM */
#ifdef CONFIG_MEMORY_HOTPLUG
-extern int create_section_mapping(unsigned long start, unsigned long end, int nid);
+extern int create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot);
extern int remove_section_mapping(unsigned long start, unsigned long end);
#ifdef CONFIG_PPC_BOOK3S_64
--- a/arch/powerpc/mm/book3s64/hash_utils.c~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/mm/book3s64/hash_utils.c
@@ -809,7 +809,8 @@ int resize_hpt_for_hotplug(unsigned long
return 0;
}
-int hash__create_section_mapping(unsigned long start, unsigned long end, int nid)
+int hash__create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
int rc;
@@ -819,7 +820,7 @@ int hash__create_section_mapping(unsigne
}
rc = htab_bolt_mapping(start, end, __pa(start),
- pgprot_val(PAGE_KERNEL), mmu_linear_psize,
+ pgprot_val(prot), mmu_linear_psize,
mmu_kernel_ssize);
if (rc < 0) {
--- a/arch/powerpc/mm/book3s64/pgtable.c~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/mm/book3s64/pgtable.c
@@ -171,12 +171,13 @@ void mmu_cleanup_all(void)
}
#ifdef CONFIG_MEMORY_HOTPLUG
-int __meminit create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __meminit create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
if (radix_enabled())
- return radix__create_section_mapping(start, end, nid);
+ return radix__create_section_mapping(start, end, nid, prot);
- return hash__create_section_mapping(start, end, nid);
+ return hash__create_section_mapping(start, end, nid, prot);
}
int __meminit remove_section_mapping(unsigned long start, unsigned long end)
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -253,7 +253,7 @@ static unsigned long next_boundary(unsig
static int __meminit create_physical_mapping(unsigned long start,
unsigned long end,
- int nid)
+ int nid, pgprot_t _prot)
{
unsigned long vaddr, addr, mapping_size = 0;
bool prev_exec, exec = false;
@@ -289,7 +289,7 @@ static int __meminit create_physical_map
prot = PAGE_KERNEL_X;
exec = true;
} else {
- prot = PAGE_KERNEL;
+ prot = _prot;
exec = false;
}
@@ -333,7 +333,7 @@ static void __init radix_init_pgtable(vo
WARN_ON(create_physical_mapping(reg->base,
reg->base + reg->size,
- -1));
+ -1, PAGE_KERNEL));
}
/* Find out how many PID bits are supported */
@@ -712,8 +712,10 @@ static int __meminit stop_machine_change
spin_unlock(&init_mm.page_table_lock);
pte_clear(&init_mm, params->aligned_start, params->pte);
- create_physical_mapping(__pa(params->aligned_start), __pa(params->start), -1);
- create_physical_mapping(__pa(params->end), __pa(params->aligned_end), -1);
+ create_physical_mapping(__pa(params->aligned_start),
+ __pa(params->start), -1, PAGE_KERNEL);
+ create_physical_mapping(__pa(params->end), __pa(params->aligned_end),
+ -1, PAGE_KERNEL);
spin_lock(&init_mm.page_table_lock);
return 0;
}
@@ -870,14 +872,16 @@ static void __meminit remove_pagetable(u
radix__flush_tlb_kernel_range(start, end);
}
-int __meminit radix__create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __meminit radix__create_section_mapping(unsigned long start,
+ unsigned long end, int nid,
+ pgprot_t prot)
{
if (end >= RADIX_VMALLOC_START) {
pr_warn("Outside the supported range\n");
return -1;
}
- return create_physical_mapping(__pa(start), __pa(end), nid);
+ return create_physical_mapping(__pa(start), __pa(end), nid, prot);
}
int __meminit radix__remove_section_mapping(unsigned long start, unsigned long end)
--- a/arch/powerpc/mm/mem.c~powerpc-mm-thread-pgprot_t-through-create_section_mapping
+++ a/arch/powerpc/mm/mem.c
@@ -90,7 +90,8 @@ int memory_add_physaddr_to_nid(u64 start
}
#endif
-int __weak create_section_mapping(unsigned long start, unsigned long end, int nid)
+int __weak create_section_mapping(unsigned long start, unsigned long end,
+ int nid, pgprot_t prot)
{
return -ENODEV;
}
@@ -131,7 +132,7 @@ int __ref arch_add_memory(int nid, u64 s
resize_hpt_for_hotplug(memblock_phys_mem_size());
start = (unsigned long)__va(start);
- rc = create_section_mapping(start, start + size, nid);
+ rc = create_section_mapping(start, start + size, nid, PAGE_KERNEL);
if (rc) {
pr_warn("Unable to create mapping for hot added memory 0x%llx..0x%llx: %d\n",
start, start + size, rc);
_
Patches currently in -mm which might be from logang@xxxxxxxxxxxx are
mm-memory_hotplug-drop-the-flags-field-from-struct-mhp_restrictions.patch
mm-memory_hotplug-rename-mhp_restrictions-to-mhp_params.patch
x86-mm-thread-pgprot_t-through-init_memory_mapping.patch
x86-mm-introduce-__set_memory_prot.patch
powerpc-mm-thread-pgprot_t-through-create_section_mapping.patch
mm-memory_hotplug-add-pgprot_t-to-mhp_params.patch
mm-memremap-set-caching-mode-for-pci-p2pdma-memory-to-wc.patch
