From: Mark Rutland <mark.rutland@arm.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Laura Abbott <labbott@redhat.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH] arm64: Use __pa_symbol for empty_zero_page
Date: Tue, 24 Jan 2017 12:37:33 +0000 [thread overview]
Message-ID: <20170124123617.GA7572@leverpostej> (raw)
In-Reply-To: <1485258220-21916-1-git-send-email-geert+renesas@glider.be>
On Tue, Jan 24, 2017 at 12:43:40PM +0100, 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>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Mark.
> ---
> 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
> --
> 1.9.1
>
WARNING: multiple messages have this Message-ID (diff)
From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: Use __pa_symbol for empty_zero_page
Date: Tue, 24 Jan 2017 12:37:33 +0000 [thread overview]
Message-ID: <20170124123617.GA7572@leverpostej> (raw)
In-Reply-To: <1485258220-21916-1-git-send-email-geert+renesas@glider.be>
On Tue, Jan 24, 2017 at 12:43:40PM +0100, 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>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Mark.
> ---
> 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
> --
> 1.9.1
>
next prev parent reply other threads:[~2017-01-24 12:38 UTC|newest]
Thread overview: 6+ 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 11:43 ` Geert Uytterhoeven
2017-01-24 12:37 ` Mark Rutland [this message]
2017-01-24 12:37 ` Mark Rutland
2017-01-25 9:30 ` Laura Abbott
2017-01-25 9:30 ` Laura Abbott
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