From: Borislav Petkov <bp@alien8.de>
To: Dave Young <dyoung@redhat.com>
Cc: matt.fleming@intel.com, linux-kernel@vger.kernel.org,
linux-efi@vger.kernel.org, vgoyal@redhat.com
Subject: Re: [PATCH]x86 efi: do not export efi runtime map in case old map
Date: Fri, 30 May 2014 09:52:19 +0200 [thread overview]
Message-ID: <20140530075219.GC28131@pd.tnic> (raw)
In-Reply-To: <20140530032010.GA29906@dhcp-16-198.nay.redhat.com>
On Fri, May 30, 2014 at 11:20:10AM +0800, Dave Young wrote:
>
> For ioremapped efi memory aka old_map the virt addresses are not persistant
> across kexec reboot. kexec-tools will read the runtime maps from sysfs then
> pass them to 2nd kernel and assuming kexec efi boot is ok. This will cause
> kexec boot failure.
>
> To address this issue do not export runtime maps in case efi old_map so
> userspace can use no efi boot instead.
>
> Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2014-05-30 7:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-30 3:20 [PATCH]x86 efi: do not export efi runtime map in case old map Dave Young
2014-05-30 5:54 ` Dave Young
2014-05-30 6:08 ` Simon Horman
2014-05-30 6:17 ` Dave Young
2014-05-30 7:52 ` Borislav Petkov [this message]
2014-05-30 12:59 ` Vivek Goyal
2014-06-02 11:23 ` Matt Fleming
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