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Correctly initialise the 2nd kernel segment, and don't

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forget to actually install it in the segment register.
This may fix some of the weird panics seen when kernel VM
is heavily used.
This commit is contained in:
Peter Grehan 2004-12-29 09:41:40 +00:00
parent a4aef7f9a4
commit 22f2fe59b9
3 changed files with 9 additions and 3 deletions
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4
sys/powerpc/aim/mmu_oea.c
View File

@ -758,7 +758,7 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
kernel_pmap->pm_sr[i] = EMPTY_SEGMENT;
}
kernel_pmap->pm_sr[KERNEL_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL2_SEGMENT;
kernel_pmap->pm_active = ~0;
/*
@ -799,6 +799,8 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
}
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL_SR), "r"(KERNEL_SEGMENT));
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL2_SR), "r"(KERNEL2_SEGMENT));
__asm __volatile ("sync; mtsdr1 %0; isync"
:: "r"((u_int)pmap_pteg_table | (pmap_pteg_mask >> 10)));
tlbia();

4
sys/powerpc/powerpc/mmu_oea.c
View File

@ -758,7 +758,7 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
kernel_pmap->pm_sr[i] = EMPTY_SEGMENT;
}
kernel_pmap->pm_sr[KERNEL_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL2_SEGMENT;
kernel_pmap->pm_active = ~0;
/*
@ -799,6 +799,8 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
}
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL_SR), "r"(KERNEL_SEGMENT));
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL2_SR), "r"(KERNEL2_SEGMENT));
__asm __volatile ("sync; mtsdr1 %0; isync"
:: "r"((u_int)pmap_pteg_table | (pmap_pteg_mask >> 10)));
tlbia();

4
sys/powerpc/powerpc/pmap.c
View File

@ -758,7 +758,7 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
kernel_pmap->pm_sr[i] = EMPTY_SEGMENT;
}
kernel_pmap->pm_sr[KERNEL_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL_SEGMENT;
kernel_pmap->pm_sr[KERNEL2_SR] = KERNEL2_SEGMENT;
kernel_pmap->pm_active = ~0;
/*
@ -799,6 +799,8 @@ pmap_bootstrap(vm_offset_t kernelstart, vm_offset_t kernelend)
}
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL_SR), "r"(KERNEL_SEGMENT));
__asm __volatile ("mtsr %0,%1"
:: "n"(KERNEL2_SR), "r"(KERNEL2_SEGMENT));
__asm __volatile ("sync; mtsdr1 %0; isync"
:: "r"((u_int)pmap_pteg_table | (pmap_pteg_mask >> 10)));
tlbia();