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Rather than assume we need to wire the first 256MB, wire the 256MB

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that contains the entry point of the kernel.
This commit is contained in:
Marcel Moolenaar 2010-03-20 05:06:47 +00:00
parent 79e221e34f
commit a4558acca8
1 changed files with 4 additions and 3 deletions
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7
sys/boot/ia64/common/exec.c
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@ -117,11 +117,12 @@ elf64_exec(struct preloaded_file *fp)
pte = PTE_PRESENT | PTE_MA_WB | PTE_ACCESSED | PTE_DIRTY |
PTE_PL_KERN | PTE_AR_RWX | PTE_ED;
pte |= IA64_RR_MASK(hdr->e_entry) & PTE_PPN_MASK;
__asm __volatile("mov cr.ifa=%0" :: "r"(IA64_RR_BASE(7)));
__asm __volatile("mov cr.ifa=%0" :: "r"(hdr->e_entry));
__asm __volatile("mov cr.itir=%0" :: "r"(28 << 2));
__asm __volatile("ptr.i %0,%1" :: "r"(IA64_RR_BASE(7)), "r"(28<<2));
__asm __volatile("ptr.d %0,%1" :: "r"(IA64_RR_BASE(7)), "r"(28<<2));
__asm __volatile("ptr.i %0,%1" :: "r"(hdr->e_entry), "r"(28<<2));
__asm __volatile("ptr.d %0,%1" :: "r"(hdr->e_entry), "r"(28<<2));
__asm __volatile("srlz.i;;");
__asm __volatile("itr.i itr[%0]=%1;;" :: "r"(0), "r"(pte));
__asm __volatile("srlz.i;;");