From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>,
Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
David Hildenbrand <david@redhat.com>,
Hsin-Yi Wang <hsinyi@chromium.org>,
Mark Rutland <mark.rutland@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
Steve Capper <steve.capper@arm.com>,
Thomas Gleixner <tglx@linutronix.de>, Yu Zhao <yuzhao@google.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH] arm64: mm: simplify the page end calculation in __create_pgd_mapping()
Date: Sun, 3 Nov 2019 21:35:58 +0900 [thread overview]
Message-ID: <20191103123559.8866-1-yamada.masahiro@socionext.com> (raw)
Calculate the page-aligned end address more simply.
The local variable, "length" is unneeded.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
arch/arm64/mm/mmu.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 60c929f3683b..a9f541912289 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -338,7 +338,7 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
phys_addr_t (*pgtable_alloc)(int),
int flags)
{
- unsigned long addr, length, end, next;
+ unsigned long addr, end, next;
pgd_t *pgdp = pgd_offset_raw(pgdir, virt);
/*
@@ -350,9 +350,8 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
phys &= PAGE_MASK;
addr = virt & PAGE_MASK;
- length = PAGE_ALIGN(size + (virt & ~PAGE_MASK));
+ end = PAGE_ALIGN(virt + size);
- end = addr + length;
do {
next = pgd_addr_end(addr, end);
alloc_init_pud(pgdp, addr, next, phys, prot, pgtable_alloc,
--
2.17.1
next reply other threads:[~2019-11-03 12:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-03 12:35 Masahiro Yamada [this message]
2019-11-05 9:37 ` Mark Rutland
2019-11-06 11:17 ` Catalin Marinas
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