Messages in this thread Patch in this message | | | Date | Tue, 29 Jan 2013 17:27:04 -0800 | From | tip-bot for Yinghai Lu <> | Subject | [tip:x86/mm2] x86, 64bit, realmode: Use init_level4_pgt to set trampoline_pgd directly |
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Commit-ID: 9735e91e9c29c0d8fe432aef1152e43e50bdb316 Gitweb: http://git.kernel.org/tip/9735e91e9c29c0d8fe432aef1152e43e50bdb316 Author: Yinghai Lu <yinghai@kernel.org> AuthorDate: Thu, 24 Jan 2013 12:19:50 -0800 Committer: H. Peter Anvin <hpa@linux.intel.com> CommitDate: Tue, 29 Jan 2013 15:12:30 -0800
x86, 64bit, realmode: Use init_level4_pgt to set trampoline_pgd directly
with #PF handler way to set early page table, level3_ident will go away with 64bit native path.
So just use entries in init_level4_pgt to set them in trampoline_pgd.
Signed-off-by: Yinghai Lu <yinghai@kernel.org> Link: http://lkml.kernel.org/r/1359058816-7615-10-git-send-email-yinghai@kernel.org Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Acked-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> --- arch/x86/realmode/init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c index c44ea7c..ffee06a 100644 --- a/arch/x86/realmode/init.c +++ b/arch/x86/realmode/init.c @@ -78,8 +78,8 @@ void __init setup_real_mode(void) *trampoline_cr4_features = read_cr4(); trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd); - trampoline_pgd[0] = __pa(level3_ident_pgt) + _KERNPG_TABLE; - trampoline_pgd[511] = __pa(level3_kernel_pgt) + _KERNPG_TABLE; + trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd; + trampoline_pgd[511] = init_level4_pgt[511].pgd; #endif }
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