linux-kernel - Re: 2.6.39.1 immediately reboots/resets on EFI system

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Date:	Mon, 06 Jun 2011 19:05:06 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Maarten Lankhorst <m.b.lankhorst@...il.com>,
	Jim Bos <jim876@...all.nl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: 2.6.39.1 immediately reboots/resets on EFI system

On 06/06/2011 06:41 PM, Matthew Garrett wrote:
> On Mon, Jun 06, 2011 at 05:19:17PM -0700, Yinghai Lu wrote:
> 
>> assume EFI in ram is not page-aligned?
> 
> They'll be 4K aligned at least.
> 


can you get boot log with "memblock=debug"?

wonder if 

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 4be9b39..c6724e4 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -912,6 +912,13 @@ void __init setup_arch(char **cmdline_p)
        memblock.current_limit = get_max_mapped();
        memblock_x86_fill();
 
+       /*
+        * The EFI specification says that boot service code won't be called
+        * after ExitBootServices(). This is, in fact, a lie.
+        */
+       if (efi_enabled)
+               efi_reserve_boot_services(

wonder if double memblock ram array in memblock_x86_fill() that is overlapping with boot services.

Thanks

Yinghai
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