From: labbott@redhat.com (Laura Abbott)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: Use __pa_symbol for empty_zero_page
Date: Wed, 25 Jan 2017 10:30:00 +0100 [thread overview]
Message-ID: <ce01d0cb-79a2-def8-8de0-d4ca3980e8e8@redhat.com> (raw)
In-Reply-To: <1485258220-21916-1-git-send-email-geert+renesas@glider.be>
On 01/24/2017 12:43 PM, Geert Uytterhoeven wrote:
> If CONFIG_DEBUG_VIRTUAL=y and CONFIG_ARM64_SW_TTBR0_PAN=y:
>
> virt_to_phys used for non-linear address: ffffff8008cc0000 (empty_zero_page+0x0/0x1000)
> WARNING: CPU: 0 PID: 0 at arch/arm64/mm/physaddr.c:14 __virt_to_phys+0x28/0x60
> ...
> [<ffffff800809abb4>] __virt_to_phys+0x28/0x60
> [<ffffff8008a02600>] setup_arch+0x46c/0x4d4
>
> Fixes: 2077be6783b5936c ("arm64: Use __pa_symbol for kernel symbols")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> arch/arm64/kernel/setup.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
> index 669fc9ff728b227f..b5222094ab52db6f 100644
> --- a/arch/arm64/kernel/setup.c
> +++ b/arch/arm64/kernel/setup.c
> @@ -298,7 +298,7 @@ void __init setup_arch(char **cmdline_p)
> * faults in case uaccess_enable() is inadvertently called by the init
> * thread.
> */
> - init_task.thread_info.ttbr0 = virt_to_phys(empty_zero_page);
> + init_task.thread_info.ttbr0 = __pa_symbol(empty_zero_page);
> #endif
>
> #ifdef CONFIG_VT
>
(thought I sent this yesterday but SMTP was not set correctly)
Acked-by: Laura Abbott <labbott@redhat.com>
prev parent reply other threads:[~2017-01-25 9:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-24 11:43 [PATCH] arm64: Use __pa_symbol for empty_zero_page Geert Uytterhoeven
2017-01-24 12:37 ` Mark Rutland
2017-01-25 9:30 ` Laura Abbott [this message]
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