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x86, realmode: Change EFER to a single u64 field

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Change EFER to be a single u64 field instead of two u32 fields; change
the order to maintain alignment.  Note that on x86-64 cr4 is really
also a 64-bit quantity, although we can only set the low 32 bits from
the trampoline code since it is still executing in 32-bit mode at that
point.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
This commit is contained in:
H. Peter Anvin
2012-05-16 14:02:05 -07:00
parent 1371270188
commit 638d957b51
3 changed files with 5 additions and 7 deletions
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2
arch/x86/realmode/rm/trampoline_64.S
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@@ -146,8 +146,8 @@ GLOBAL(trampoline_pgd) .space PAGE_SIZE
.balign 8
GLOBAL(trampoline_header)
tr_start: .space 8
GLOBAL(tr_cr4) .space 4
GLOBAL(tr_efer) .space 8
GLOBAL(tr_cr4) .space 4
END(trampoline_header)
#include "trampoline_common.S"