Hi Linus,
someone changed the initialization for the page tables during boot-up,
without updating a "je 1f" for SMP:
now every cpu initializes the boot page table, only the first cpu should
do that.
Below is a fix (against 2.3.99-pre3), I'm using it on my dual pII
-- Manfred <<<<<<<< --- 2.3/arch/i386/kernel/head.S Mon Mar 20 15:11:25 2000 +++ build-2.3/arch/i386/kernel/head.S Tue Apr 11 20:14:58 2000 @@ -70,22 +70,28 @@ */ #define cr4_bits mmu_cr4_features-__PAGE_OFFSET cmpl $0,cr4_bits - je 1f - movl %cr4,%eax # Turn on 4Mb pages + je 3f + movl %cr4,%eax # Turn on paging options (PSE,PAE,..) orl cr4_bits,%eax movl %eax,%cr4 + jmp 3f +1: #endif /* - * Setup paging (intialize tables, then switch them on) + * Initialize page tables */ -1: movl $pg0-__PAGE_OFFSET,%edi /* initialize page tables */ movl $007,%eax /* "007" doesn't mean with right to kill, but PRESENT+RW+USER */ -1: stosl +2: stosl add $0x1000,%eax cmp $empty_zero_page-__PAGE_OFFSET,%edi - jne 1b + jne 2b + +/* + * Enable paging + */ +3: movl $swapper_pg_dir-__PAGE_OFFSET,%eax movl %eax,%cr3 /* set the page table pointer.. */ movl %cr0,%eax >>>>>>>>- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
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