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
prev parent reply other threads:[~2014-06-09 14:32 UTC|newest]
Thread overview: 6+ 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
2014-06-09 12:54 ` [PATCH] " Vivek Goyal
2014-06-09 13:18 ` Matt Fleming
2014-06-09 14:15 ` Vivek Goyal
2014-06-09 14:25 ` Matt Fleming
2014-06-09 14:32 ` Vivek Goyal [this message]
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