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hv_vm: Minor fixes to pagetable code

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-06-15 15:47:44 +09:00
parent 7ff613665b
commit a664bd5d55
1 changed files with 8 additions and 2 deletions
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10
src/hv_vm.c
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@ -385,13 +385,19 @@ u64 hv_pt_walk(u64 addr)
dprintf("hv_pt_walk(0x%lx)\n", addr);
u64 idx = addr >> VADDR_L2_OFFSET_BITS;
assert(idx < ENTRIES_PER_L2_TABLE);
u64 l2d = hv_L2[idx];
dprintf(" l2d = 0x%lx\n", l2d);
if (!L2_IS_TABLE(l2d)) {
if (L2_IS_SW_BLOCK(l2d) || L2_IS_HW_BLOCK(l2d))
if (L2_IS_SW_BLOCK(l2d))
l2d += addr & (VADDR_L2_ALIGN_MASK | VADDR_L3_ALIGN_MASK);
if (L2_IS_HW_BLOCK(l2d)) {
l2d &= ~PTE_LOWER_ATTRIBUTES;
l2d |= addr & (VADDR_L2_ALIGN_MASK | VADDR_L3_ALIGN_MASK);
}
dprintf(" result: 0x%lx\n", l2d);
return l2d;
@ -403,7 +409,7 @@ u64 hv_pt_walk(u64 addr)
if (!L3_IS_TABLE(l3d)) {
if (L3_IS_SW_BLOCK(l3d))
l3d |= addr & VADDR_L3_ALIGN_MASK;
l3d += addr & VADDR_L3_ALIGN_MASK;
if (L3_IS_HW_BLOCK(l3d)) {
l3d &= ~PTE_LOWER_ATTRIBUTES;
l3d |= addr & VADDR_L3_ALIGN_MASK;