From: Nicholas Piggin <npiggin@gmail.com>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: linux-arch@vger.kernel.org,
Ding Tianhong <dingtianhong@huawei.com>,
linux-kernel@vger.kernel.org, Nicholas Piggin <npiggin@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
Jonathan Cameron <Jonathan.Cameron@Huawei.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v11 13/13] powerpc/64s/radix: Enable huge vmalloc mappings
Date: Tue, 26 Jan 2021 14:45:10 +1000 [thread overview]
Message-ID: <20210126044510.2491820-14-npiggin@gmail.com> (raw)
In-Reply-To: <20210126044510.2491820-1-npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
.../admin-guide/kernel-parameters.txt | 2 ++
arch/powerpc/Kconfig | 1 +
arch/powerpc/kernel/module.c | 21 +++++++++++++++----
3 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a10b545c2070..d62df53e5200 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3225,6 +3225,8 @@
nohugeiomap [KNL,X86,PPC,ARM64] Disable kernel huge I/O mappings.
+ nohugevmalloc [PPC] Disable kernel huge vmalloc mappings.
+
nosmt [KNL,S390] Disable symmetric multithreading (SMT).
Equivalent to smt=1.
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 107bb4319e0e..781da6829ab7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -181,6 +181,7 @@ config PPC
select GENERIC_GETTIMEOFDAY
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_HUGE_VMAP if PPC_BOOK3S_64 && PPC_RADIX_MMU
+ select HAVE_ARCH_HUGE_VMALLOC if HAVE_ARCH_HUGE_VMAP
select HAVE_ARCH_JUMP_LABEL
select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14
select HAVE_ARCH_KASAN_VMALLOC if PPC32 && PPC_PAGE_SHIFT <= 14
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index a211b0253cdb..07026335d24d 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -87,13 +87,26 @@ int module_finalize(const Elf_Ehdr *hdr,
return 0;
}
-#ifdef MODULES_VADDR
void *module_alloc(unsigned long size)
{
+ unsigned long start = VMALLOC_START;
+ unsigned long end = VMALLOC_END;
+
+#ifdef MODULES_VADDR
BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
+ start = MODULES_VADDR;
+ end = MODULES_END;
+#endif
+
+ /*
+ * Don't do huge page allocations for modules yet until more testing
+ * is done. STRICT_MODULE_RWX may require extra work to support this
+ * too.
+ */
- return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, GFP_KERNEL,
- PAGE_KERNEL_EXEC, VM_FLUSH_RESET_PERMS, NUMA_NO_NODE,
+ return __vmalloc_node_range(size, 1, start, end, GFP_KERNEL,
+ PAGE_KERNEL_EXEC,
+ VM_NO_HUGE_VMAP | VM_FLUSH_RESET_PERMS,
+ NUMA_NO_NODE,
__builtin_return_address(0));
}
-#endif
--
2.23.0
next prev parent reply other threads:[~2021-01-26 5:14 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 4:44 [PATCH v11 00/13] huge vmalloc mappings Nicholas Piggin
2021-01-26 4:44 ` [PATCH v11 01/13] mm/vmalloc: fix HUGE_VMAP regression by enabling huge pages in vmalloc_to_page Nicholas Piggin
2021-01-26 6:40 ` Miaohe Lin
2021-01-28 3:13 ` Ding Tianhong
2021-02-02 10:22 ` Nicholas Piggin
2021-01-26 4:44 ` [PATCH v11 02/13] mm: apply_to_pte_range warn and fail if a large pte is encountered Nicholas Piggin
2021-01-26 6:49 ` Miaohe Lin
2021-01-26 4:45 ` [PATCH v11 03/13] mm/vmalloc: rename vmap_*_range vmap_pages_*_range Nicholas Piggin
2021-01-27 2:10 ` Miaohe Lin
2021-01-26 4:45 ` [PATCH v11 04/13] mm/ioremap: rename ioremap_*_range to vmap_*_range Nicholas Piggin
2021-01-26 6:40 ` Christoph Hellwig
2021-01-28 2:38 ` Miaohe Lin
2021-01-26 4:45 ` [PATCH v11 05/13] mm: HUGE_VMAP arch support cleanup Nicholas Piggin
2021-01-26 6:07 ` Ding Tianhong
2021-01-26 13:26 ` kernel test robot
2021-01-27 5:26 ` kernel test robot
2021-01-26 4:45 ` [PATCH v11 06/13] powerpc: inline huge vmap supported functions Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 07/13] arm64: " Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 08/13] x86: " Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 09/13] mm/vmalloc: provide fallback arch huge vmap support functions Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 10/13] mm: Move vmap_range from mm/ioremap.c to mm/vmalloc.c Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 11/13] mm/vmalloc: add vmap_range_noflush variant Nicholas Piggin
2021-01-26 4:45 ` [PATCH v11 12/13] mm/vmalloc: Hugepage vmalloc mappings Nicholas Piggin
2021-01-26 6:59 ` Ding Tianhong
2021-01-26 9:47 ` Nicholas Piggin
2021-01-26 11:48 ` Ding Tianhong
2021-01-26 4:45 ` Nicholas Piggin [this message]
2021-01-27 10:26 ` [PATCH v11 13/13] powerpc/64s/radix: Enable huge " Michael Ellerman
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