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From: Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Matt Fleming <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
Cc: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>,
	LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Matt Fleming
	<matt.fleming-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Dave Young <dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH] x86/boot: EFI_MIXED should not prohibit loading above 4G
Date: Mon, 9 Jun 2014 10:32:53 -0400	[thread overview]
Message-ID: <20140609143253.GB22049@redhat.com> (raw)
In-Reply-To: <20140609142559.GE27302-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>

On Mon, Jun 09, 2014 at 03:25:59PM +0100, Matt Fleming wrote:
> On Mon, 09 Jun, at 10:15:12AM, Vivek Goyal wrote:
> > 
> > Ok, thanks. Or I can check whether EFI run time map is there or not. I am
> > assuming that efi runtime services are not enabled, then run time map
> > will not be there either.
> 
> Yes, if runtime services are unavailable then the runtime map will not
> be exported.
> 
> Now, you can check for the presence of the runtime map from userland but
> please don't use that as your check inside the kernel - this is exactly
> what efi_enabled() is for.

Ok, I will use efi_enabled() instead.

Thanks
Vivek

WARNING: multiple messages have this Message-ID (diff)
From: Vivek Goyal <vgoyal@redhat.com>
To: Matt Fleming <matt@console-pimps.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
	LKML <linux-kernel@vger.kernel.org>,
	linux-efi@vger.kernel.org, Matt Fleming <matt.fleming@intel.com>,
	Dave Young <dyoung@redhat.com>
Subject: Re: [PATCH] x86/boot: EFI_MIXED should not prohibit loading above 4G
Date: Mon, 9 Jun 2014 10:32:53 -0400	[thread overview]
Message-ID: <20140609143253.GB22049@redhat.com> (raw)
In-Reply-To: <20140609142559.GE27302@console-pimps.org>

On Mon, Jun 09, 2014 at 03:25:59PM +0100, Matt Fleming wrote:
> On Mon, 09 Jun, at 10:15:12AM, Vivek Goyal wrote:
> > 
> > Ok, thanks. Or I can check whether EFI run time map is there or not. I am
> > assuming that efi runtime services are not enabled, then run time map
> > will not be there either.
> 
> Yes, if runtime services are unavailable then the runtime map will not
> be exported.
> 
> Now, you can check for the presence of the runtime map from userland but
> please don't use that as your check inside the kernel - this is exactly
> what efi_enabled() is for.

Ok, I will use efi_enabled() instead.

Thanks
Vivek

  parent reply	other threads:[~2014-06-09 14:32 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1402140380-15377-1-git-send-email-matt@console-pimps.org>
2014-06-07 16:33 ` [tip:x86/urgent] x86/boot: EFI_MIXED should not prohibit loading above 4G tip-bot for Matt Fleming
     [not found] ` <1402140380-15377-1-git-send-email-matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2014-06-09 12:54   ` [PATCH] " Vivek Goyal
2014-06-09 12:54     ` Vivek Goyal
2014-06-09 13:18     ` Matt Fleming
     [not found]       ` <CADknwL7Jeh82W3=rEqGqh=37zpqhmMuP1jy+DDq9vb2gQ+9hzg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-06-09 14:15         ` Vivek Goyal
2014-06-09 14:15           ` Vivek Goyal
     [not found]           ` <20140609141512.GA22049-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2014-06-09 14:25             ` Matt Fleming
2014-06-09 14:25               ` Matt Fleming
     [not found]               ` <20140609142559.GE27302-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>
2014-06-09 14:32                 ` Vivek Goyal [this message]
2014-06-09 14:32                   ` Vivek Goyal

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