linux-kernel - [PATCH 5/8] x86 boot: remap efi systab runtime from phys to virt

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Date:	Sun, 15 Jun 2008 23:30:06 -0700
From:	Paul Jackson <pj@....com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"Yinghai Lu" <yhlu.kernel@...il.com>,
	"Jack Steiner" <steiner@....com>, "Mike Travis" <travis@....com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	"Huang, Ying" <ying.huang@...el.com>,
	"Andi Kleen" <andi@...stfloor.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	Paul Jackson <pj@....com>
Subject: [PATCH 5/8] x86 boot: remap efi systab runtime from phys to virt

From: Paul Jackson <pj@....com>

One more efi entry needs its address converted from physical
to virtual during boot: efi.systab->runtime.

Signed-off-by: Paul Jackson <pj@....com>

---
 arch/x86/kernel/efi.c |    1 +
 1 file changed, 1 insertion(+)

--- linux.orig/arch/x86/kernel/efi.c	2008-06-13 00:53:10.053599898 -0700
+++ linux/arch/x86/kernel/efi.c	2008-06-13 00:53:21.762309008 -0700
@@ -486,6 +486,7 @@ void __init efi_enter_virtual_mode(void)
 		if (md->phys_addr <= systab && systab < end) {
 			systab += md->virt_addr - md->phys_addr;
 			efi.systab = (efi_system_table_t *) (unsigned long) systab;
+			efi.systab->runtime = __va(efi.systab->runtime);
 		}
 	}
 

-- 
                          I won't rest till it's the best ...
                          Programmer, Linux Scalability
                          Paul Jackson <pj@....com> 1.650.933.1373
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