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From: Tony Lindgren <tony@atomide.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
Date: Thu, 18 Mar 2010 20:24:48 -0700	[thread overview]
Message-ID: <20100319032448.GQ2900@atomide.com> (raw)
In-Reply-To: <20100319013521.GP2900@atomide.com>

* Tony Lindgren <tony@atomide.com> [100318 18:31]:
> --- a/arch/arm/kernel/setup.c
> +++ b/arch/arm/kernel/setup.c
> @@ -269,6 +269,24 @@ static void __init cacheid_init(void)
>  extern struct proc_info_list *lookup_processor_type(unsigned int);
>  extern struct machine_desc *lookup_machine_type(unsigned int);
>  
> +#ifdef CONFIG_CPU_V6
> +static void __init feat_v6_fixup(void)
> +{
> +	int id = read_cpuid_id();
> +
> +	if (id & 0x000f0000 != 0x00070000)
> +		return;
> +
> +	/* HWCAP_TLS is available only on V6 r1p0 and later */
> +	if (((id >> 20) & 3) == 0)
> +		elf_hwcap &= ~HWCAP_TLS;
> +}

This test probably needs to only look at ARM1136, and ignore others
such as ARM1176. Will take a look tomorrow.

Tony


  reply	other threads:[~2010-03-19  3:23 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-17 17:57 [PATCH] arm: Fix mounting root on omaps with CPU_V6 and CPU_V7 Tony Lindgren
2010-03-17 18:07 ` Catalin Marinas
2010-03-17 19:11   ` Tony Lindgren
2010-03-18 11:13     ` Catalin Marinas
2010-03-18 17:00       ` Tony Lindgren
2010-03-19  1:35         ` [PATCH] arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6 Tony Lindgren
2010-03-19  3:24           ` Tony Lindgren [this message]
2010-03-19  3:46           ` Jamie Lokier
2010-03-19  8:54             ` Russell King - ARM Linux
2010-03-19 15:32               ` Tony Lindgren
2010-03-19  8:53           ` Russell King - ARM Linux
2010-03-19 15:58             ` Tony Lindgren
2010-03-23  0:16               ` Russell King - ARM Linux
2010-03-23  0:54                 ` Tony Lindgren

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