From: ard.biesheuvel@linaro.org (Ard Biesheuvel)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/3] Revert "arm64: account for sparsemem section alignment when choosing vmemmap offset"
Date: Wed, 30 Mar 2016 14:25:48 +0200 [thread overview]
Message-ID: <1459340748-14975-4-git-send-email-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <1459340748-14975-1-git-send-email-ard.biesheuvel@linaro.org>
This reverts commit 36e5cd6b897e17d03008f81e075625d8e43e52d0, since the
section alignment is now guaranteed by construction when choosing the
value of memstart_addr.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
arch/arm64/include/asm/pgtable.h | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 989fef16d461..aa6106ac050c 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -32,14 +32,13 @@
* VMALLOC_END: extends to the available space below vmmemmap, PCI I/O space,
* fixed mappings and modules
*/
-#define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT)) * sizeof(struct page), PUD_SIZE)
+#define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT - 1)) * sizeof(struct page), PUD_SIZE)
#define VMALLOC_START (MODULES_END)
#define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K)
#define VMEMMAP_START (VMALLOC_END + SZ_64K)
-#define vmemmap ((struct page *)VMEMMAP_START - \
- SECTION_ALIGN_DOWN(memstart_addr >> PAGE_SHIFT))
+#define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT))
#define FIRST_USER_ADDRESS 0UL
--
2.5.0
prev parent reply other threads:[~2016-03-30 12:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-30 12:25 [PATCH v2 0/3] arm64: memstart_addr alignment and vmemmap offset fixes Ard Biesheuvel
2016-03-30 12:25 ` [PATCH v2 1/3] arm64/mm: ensure memstart_addr remains sufficiently aligned Ard Biesheuvel
2016-03-30 12:25 ` [PATCH v2 2/3] arm64: choose memstart_addr based on minimum sparsemem section alignment Ard Biesheuvel
2016-03-30 12:25 ` Ard Biesheuvel [this message]
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