From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
To: Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Alexander Potapenko <glider@google.com>,
Dmitry Vyukov <dvyukov@google.com>, Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org,
David Keitel <dkeitel@codeaurora.org>,
linux-mm@kvack.org, Alexey Klimov <klimov.linux@gmail.com>,
Yury <yury.norov@gmail.com>,
Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH v6 1/6] arm64: introduce VA_START macro - the first kernel virtual address.
Date: Thu, 17 Sep 2015 12:38:07 +0300 [thread overview]
Message-ID: <1442482692-6416-2-git-send-email-ryabinin.a.a@gmail.com> (raw)
In-Reply-To: <1442482692-6416-1-git-send-email-ryabinin.a.a@gmail.com>
In order to not use lengthy (UL(0xffffffffffffffff) << VA_BITS) everywhere,
replace it with VA_START.
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
---
arch/arm64/include/asm/memory.h | 2 ++
arch/arm64/include/asm/pgtable.h | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 6b4c3ad..11ccf6c 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -42,12 +42,14 @@
* PAGE_OFFSET - the virtual address of the start of the kernel image (top
* (VA_BITS - 1))
* VA_BITS - the maximum number of bits for virtual addresses.
+ * VA_START - the first kernel virtual address.
* TASK_SIZE - the maximum size of a user space task.
* TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area.
* The module space lives between the addresses given by TASK_SIZE
* and PAGE_OFFSET - it must be within 128MB of the kernel text.
*/
#define VA_BITS (CONFIG_ARM64_VA_BITS)
+#define VA_START (UL(0xffffffffffffffff) << VA_BITS)
#define PAGE_OFFSET (UL(0xffffffffffffffff) << (VA_BITS - 1))
#define MODULES_END (PAGE_OFFSET)
#define MODULES_VADDR (MODULES_END - SZ_64M)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 6900b2d9..a53a126 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -45,7 +45,7 @@
* fixed mappings and modules
*/
#define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT)) * sizeof(struct page), PUD_SIZE)
-#define VMALLOC_START (UL(0xffffffffffffffff) << VA_BITS)
+#define VMALLOC_START (VA_START)
#define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K)
#define vmemmap ((struct page *)(VMALLOC_END + SZ_64K))
--
2.4.6
next prev parent reply other threads:[~2015-09-17 9:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-17 9:38 [PATCH v6 0/6] KASAN for arm64 Andrey Ryabinin
2015-09-17 9:38 ` Andrey Ryabinin [this message]
2015-09-17 9:38 ` [PATCH v6 2/6] arm64: move PGD_SIZE definition to pgalloc.h Andrey Ryabinin
2015-09-17 9:38 ` [PATCH v6 3/6] x86, efi, kasan: #undef memset/memcpy/memmove per arch Andrey Ryabinin
2015-09-29 8:38 ` Ingo Molnar
2015-09-29 15:34 ` Andrey Ryabinin
2015-09-17 9:38 ` [PATCH v6 4/6] arm64: add KASAN support Andrey Ryabinin
2015-09-17 9:38 ` [PATCH v6 5/6] ARM64: kasan: print memory assignment Andrey Ryabinin
2015-09-17 9:38 ` [PATCH v6 6/6] Documentation/features/KASAN: arm64 supports KASAN now Andrey Ryabinin
2015-10-07 10:04 ` [PATCH v6 0/6] KASAN for arm64 Catalin Marinas
2015-10-08 10:36 ` Andrey Ryabinin
2015-10-08 11:06 ` Mark Rutland
2015-10-08 11:11 ` Mark Rutland
2015-10-08 11:23 ` Andrey Ryabinin
2015-10-08 12:09 ` Ard Biesheuvel
2015-10-08 15:11 ` Catalin Marinas
2015-10-08 16:01 ` Ard Biesheuvel
2015-10-08 16:07 ` Andrey Ryabinin
2015-10-09 9:32 ` Andrey Ryabinin
2015-10-09 9:48 ` Mark Rutland
2015-10-09 10:18 ` Andrey Ryabinin
2015-10-09 12:42 ` Mark Rutland
2015-10-09 14:34 ` Andrey Ryabinin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1442482692-6416-2-git-send-email-ryabinin.a.a@gmail.com \
--to=ryabinin.a.a@gmail.com \
--cc=andreyknvl@google.com \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=dkeitel@codeaurora.org \
--cc=dvyukov@google.com \
--cc=glider@google.com \
--cc=klimov.linux@gmail.com \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=will.deacon@arm.com \
--cc=yury.norov@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).