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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2008-07-08 15:06:42 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-07-16 10:58:13 +0200 |
| commit | 5b09b2876ed1a8e34a0da8f069575fc6174e2077 (patch) | |
| tree | 370750e5c1d4073ed4a7525ccd0348e4154ba0d4 /include/asm-x86/setup.h | |
| parent | xen: move smp setup into smp.c (diff) | |
| download | linux-dev-5b09b2876ed1a8e34a0da8f069575fc6174e2077.tar.xz linux-dev-5b09b2876ed1a8e34a0da8f069575fc6174e2077.zip | |
x86_64: add workaround for no %gs-based percpu
As a stopgap until Mike Travis's x86-64 gs-based percpu patches are
ready, provide workaround functions for x86_read/write_percpu for
Xen's use.
Specifically, this means that we can't really make use of vcpu
placement, because we can't use a single gs-based memory access to get
to vcpu fields. So disable all that for now.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | include/asm-x86/setup.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86/setup.h b/include/asm-x86/setup.h index 90ab2225e71b..659492624e74 100644 --- a/include/asm-x86/setup.h +++ b/include/asm-x86/setup.h @@ -76,6 +76,7 @@ extern unsigned long init_pg_tables_start; extern unsigned long init_pg_tables_end; #else +void __init x86_64_init_pda(void); void __init x86_64_start_kernel(char *real_mode); void __init x86_64_start_reservations(char *real_mode_data); |