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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
commit | cf816ecb533ab96b883dfdc0db174598b5b5c4d2 (patch) | |
tree | 1b7705db288ae2917105e624b01fdf81e0882bf1 /arch/x86/kernel/trampoline.c | |
parent | adf6d34e460387ee3e8f1e1875d52bff51212c7d (diff) | |
parent | 15f7d677ccff6f0f5de8a1ee43a792567e9f9de9 (diff) | |
download | linux-fsl-qoriq-cf816ecb533ab96b883dfdc0db174598b5b5c4d2.tar.xz |
Merge branch 'merge-fixes' into devel
Diffstat (limited to 'arch/x86/kernel/trampoline.c')
-rw-r--r-- | arch/x86/kernel/trampoline.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c new file mode 100644 index 0000000..abbf199 --- /dev/null +++ b/arch/x86/kernel/trampoline.c @@ -0,0 +1,18 @@ +#include <linux/io.h> + +#include <asm/trampoline.h> + +/* ready for x86_64, no harm for x86, since it will overwrite after alloc */ +unsigned char *trampoline_base = __va(TRAMPOLINE_BASE); + +/* + * Currently trivial. Write the real->protected mode + * bootstrap into the page concerned. The caller + * has made sure it's suitably aligned. + */ +unsigned long setup_trampoline(void) +{ + memcpy(trampoline_base, trampoline_data, + trampoline_end - trampoline_data); + return virt_to_phys(trampoline_base); +} |