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| author | Jan Beulich <jbeulich@suse.com> | 2012-09-11 15:45:20 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2012-09-11 15:45:20 +0200 |
| commit | 0923fba2cf02e08275c6e454906a0420baa455b5 (patch) | |
| tree | 0acb7d37d0920c77a9775f869aab0e6b60a4b681 /xen/arch/x86/x86_64 | |
| parent | 28957ed4fd2fecc99b67db60a9266aa2f59ab980 (diff) | |
| download | xen-0923fba2cf02e08275c6e454906a0420baa455b5.tar.gz xen-0923fba2cf02e08275c6e454906a0420baa455b5.tar.bz2 xen-0923fba2cf02e08275c6e454906a0420baa455b5.zip | |
x86: allow early use of fixmaps
As a prerequisite for adding an EHCI debug port based console
implementation, set up the page tables needed for (a sub-portion of)
the fixmaps together with other boot time page table construction.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen/arch/x86/x86_64')
| -rw-r--r-- | xen/arch/x86/x86_64/mm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c index 635a499d65..f8f624802c 100644 --- a/xen/arch/x86/x86_64/mm.c +++ b/xen/arch/x86/x86_64/mm.c @@ -65,6 +65,10 @@ l3_pgentry_t __attribute__ ((__section__ (".bss.page_aligned"))) l2_pgentry_t __attribute__ ((__section__ (".bss.page_aligned"))) l2_xenmap[L2_PAGETABLE_ENTRIES]; +/* Enough page directories to map the early fixmap space. */ +l2_pgentry_t __attribute__ ((__section__ (".bss.page_aligned"))) + l2_fixmap[L2_PAGETABLE_ENTRIES]; + /* Enough page directories to map into the bottom 1GB. */ l3_pgentry_t __attribute__ ((__section__ (".bss.page_aligned"))) l3_bootmap[L3_PAGETABLE_ENTRIES]; |