From: Logan Gunthorpe <logang@deltatee.com>
To: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, platform-driver-x86@vger.kernel.org,
linux-mm@kvack.org, Christoph Hellwig <hch@lst.de>,
Dan Williams <dan.j.williams@intel.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Logan Gunthorpe <logang@deltatee.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Andy Lutomirski <luto@kernel.org>,
Paul Mackerras <paulus@samba.org>,
Thomas Gleixner <tglx@linutronix.de>,
Will Deacon <will@kernel.org>
Subject: [PATCH 3/6] powerpc/mm: Thread pgprot_t through create_section_mapping()
Date: Mon, 9 Dec 2019 12:13:43 -0700 [thread overview]
Message-ID: <20191209191346.5197-4-logang@deltatee.com> (raw)
In-Reply-To: <20191209191346.5197-1-logang@deltatee.com>
In prepartion to support a pgprot_t argument for arch_add_memory().
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
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(-)
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 2781ebf6add4..6fc4520092c7 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h
@@ -251,7 +251,8 @@ extern int __meminit hash__vmemmap_create_mapping(unsigned long start,
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__ */
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h
index d97db3ad9aae..46799f3c3d1d 100644
--- a/arch/powerpc/include/asm/book3s/64/radix.h
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -289,7 +289,8 @@ static inline unsigned long radix__get_tree_size(void)
}
#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__ */
diff --git a/arch/powerpc/include/asm/sparsemem.h b/arch/powerpc/include/asm/sparsemem.h
index 3192d454a733..c89b32443cff 100644
--- a/arch/powerpc/include/asm/sparsemem.h
+++ b/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
diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c
index 6c123760164e..f7a9fe86a367 100644
--- a/arch/powerpc/mm/book3s64/hash_utils.c
+++ b/arch/powerpc/mm/book3s64/hash_utils.c
@@ -781,7 +781,8 @@ int resize_hpt_for_hotplug(unsigned long new_mem_size)
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;
@@ -791,7 +792,7 @@ int hash__create_section_mapping(unsigned long start, unsigned long end, int nid
}
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) {
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c
index 75483b40fcb1..b60c18d2e5c9 100644
--- a/arch/powerpc/mm/book3s64/pgtable.c
+++ b/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)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 6ee17d09649c..328ed8669b6f 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -252,7 +252,7 @@ static unsigned long next_boundary(unsigned long addr, unsigned long end)
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;
@@ -288,7 +288,7 @@ static int __meminit create_physical_mapping(unsigned long start,
prot = PAGE_KERNEL_X;
exec = true;
} else {
- prot = PAGE_KERNEL;
+ prot = _prot;
exec = false;
}
@@ -332,7 +332,7 @@ static void __init radix_init_pgtable(void)
WARN_ON(create_physical_mapping(reg->base,
reg->base + reg->size,
- -1));
+ -1, PAGE_KERNEL));
}
/* Find out how many PID bits are supported */
@@ -707,8 +707,10 @@ static int __meminit stop_machine_change_mapping(void *data)
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;
}
@@ -865,14 +867,16 @@ static void __meminit remove_pagetable(unsigned long start, unsigned long end)
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)
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index be941d382c8d..22525d8935ce 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -94,7 +94,8 @@ 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;
}
@@ -114,7 +115,7 @@ int __ref arch_add_memory(int nid, u64 start, u64 size,
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);
--
2.20.1
next prev parent reply other threads:[~2019-12-09 20:00 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-09 19:13 [PATCH 0/6] Allow setting caching mode in arch_add_memory() for P2PDMA Logan Gunthorpe
2019-12-09 19:13 ` [PATCH 1/6] x86/mm: Thread pgprot_t through init_memory_mapping() Logan Gunthorpe
2019-12-09 19:13 ` [PATCH 2/6] x86/mm: Introduce _set_memory_prot() Logan Gunthorpe
2019-12-09 19:13 ` Logan Gunthorpe [this message]
2019-12-09 19:13 ` [PATCH 4/6] s390/mm: Thread pgprot_t through vmem_add_mapping() Logan Gunthorpe
2019-12-09 19:13 ` [PATCH 5/6] mm, memory_hotplug: Provide argument for the pgprot_t in arch_add_memory() Logan Gunthorpe
2019-12-09 19:23 ` David Hildenbrand
2019-12-09 20:24 ` Logan Gunthorpe
2019-12-09 20:41 ` Michal Hocko
2019-12-09 21:00 ` Dan Williams
2019-12-09 21:27 ` Logan Gunthorpe
2019-12-09 21:24 ` Logan Gunthorpe
2019-12-10 9:56 ` Michal Hocko
2019-12-09 20:43 ` Dan Williams
2019-12-09 20:52 ` David Hildenbrand
2019-12-10 10:04 ` Michal Hocko
2019-12-10 10:09 ` David Hildenbrand
2019-12-10 10:34 ` Michal Hocko
2019-12-10 11:25 ` David Hildenbrand
2019-12-10 23:52 ` Logan Gunthorpe
2019-12-11 8:37 ` Michal Hocko
2019-12-09 19:13 ` [PATCH 6/6] mm/memremap: Set caching mode for PCI P2PDMA memory to WC Logan Gunthorpe
2019-12-09 20:43 ` [PATCH 0/6] Allow setting caching mode in arch_add_memory() for P2PDMA Christoph Hellwig
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