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Subject: Re: [Xen-devel] [PATCH v4 04/14] x86/rtc: replace paravirt rtc check
 with platform legacy quirk
To: "Luis R. Rodriguez" <mcgrof@kernel.org>, <bp@alien8.de>, <hpa@zytor.com>,
        <tglx@linutronix.de>, <mingo@redhat.com>, <rusty@rustcorp.com.au>
References: <1459987594-5434-1-git-send-email-mcgrof@kernel.org>
 <1459987594-5434-5-git-send-email-mcgrof@kernel.org>
CC: <xen-devel@lists.xensource.com>, <matt@codeblueprint.co.uk>,
        <andrew.cooper3@citrix.com>, <x86@kernel.org>,
        <linux-kernel@vger.kernel.org>, <luto@amacapital.net>, <jlee@suse.com>,
        <lguest@lists.ozlabs.org>, <glin@suse.com>, <david.vrabel@citrix.com>,
        <boris.ostrovsky@oracle.com>, <andriy.shevchenko@linux.intel.com>
From: David Vrabel <david.vrabel@citrix.com>
Message-ID: <57062B90.10401@citrix.com>
Date: Thu, 7 Apr 2016 10:42:40 +0100
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On 07/04/16 01:06, Luis R. Rodriguez wrote:
> We have 4 types of x86 platforms that disable RTC:
> 
>   * Intel MID
>   * Lguest - uses paravirt
>   * Xen dom-U - uses paravirt
>   * x86 on legacy systems annotated with an ACPI legacy flag
> 
> We can consolidate all of these into a platform specific legacy
> quirk set early in boot through i386_start_kernel() and through
> x86_64_start_reservations(). This deals with the RTC quirks which
> we can rely on through the hardware subarch, the ACPI check can
> be dealt with separately.

Xen parts:

Reviewed-by: David Vrabel <david.vrabel@citrix.com>

David