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x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline

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This patch changes 64-bit trampoline so that CR4 and
EFER are provided by the kernel instead of using fixed
values.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-24-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Jarkko Sakkinen
2012-05-08 21:22:46 +03:00
committed by H. Peter Anvin
parent bf8b88e977
commit cda846f101
7 changed files with 49 additions and 28 deletions
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1
arch/x86/realmode/rm/header.S
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@@ -9,6 +9,7 @@
.section ".header", "a"
.balign 16
GLOBAL(real_mode_header)
.long pa_text_start
.long pa_ro_end