From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv2 2/2] arm64: Correct virt_addr_valid
Date: Tue, 17 Dec 2013 12:00:27 +0000 [thread overview]
Message-ID: <20131217120027.GD32118@arm.com> (raw)
In-Reply-To: <1387220505-9799-2-git-send-email-lauraa@codeaurora.org>
On Mon, Dec 16, 2013 at 07:01:45PM +0000, Laura Abbott wrote:
> diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
> index 3776217..b8ec776 100644
> --- a/arch/arm64/include/asm/memory.h
> +++ b/arch/arm64/include/asm/memory.h
> @@ -146,8 +146,9 @@ static inline void *phys_to_virt(phys_addr_t x)
> #define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
>
> #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
> -#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
> - ((void *)(kaddr) < (void *)high_memory))
> +#define virt_addr_valid(kaddr) (pfn_valid(__pa(kaddr) >> PAGE_SHIFT) && \
> + ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory))
> +
I still think the original patch was fine for arm64, no need for
additional checks since we don't have highmem and __pa() is always
linear.
--
Catalin
next prev parent reply other threads:[~2013-12-17 12:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-16 19:01 [PATCHv2 1/2] arm: Correct virt_addr_valid Laura Abbott
2013-12-16 19:01 ` [PATCHv2 2/2] arm64: " Laura Abbott
2013-12-17 12:00 ` Catalin Marinas [this message]
2013-12-18 18:20 ` Laura Abbott
2013-12-18 18:30 ` Catalin Marinas
2013-12-17 12:08 ` [PATCHv2 1/2] arm: " Will Deacon
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