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Differential D21592 Diff 63709 head/sys/riscv/riscv/pmap.c

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head/sys/riscv/riscv/pmap.c

Show First 20 Lines • Show All 2,644 Lines • ▼ Show 20 Linespmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot,
vm_paddr_t opa, pa, l2_pa, l3_pa; vm_paddr_t opa, pa, l2_pa, l3_pa;
vm_page_t mpte, om, l2_m, l3_m; vm_page_t mpte, om, l2_m, l3_m;
pt_entry_t entry; pt_entry_t entry;
pn_t l2_pn, l3_pn, pn; pn_t l2_pn, l3_pn, pn;
int rv; int rv;
bool nosleep; bool nosleep;
va = trunc_page(va); va = trunc_page(va);
if ((m->oflags & VPO_UNMANAGED) == 0 && !vm_page_xbusied(m)) if ((m->oflags & VPO_UNMANAGED) == 0)
VM_OBJECT_ASSERT_LOCKED(m->object); VM_PAGE_OBJECT_BUSY_ASSERT(m);
pa = VM_PAGE_TO_PHYS(m); pa = VM_PAGE_TO_PHYS(m);
pn = (pa / PAGE_SIZE); pn = (pa / PAGE_SIZE);
new_l3 = PTE_V | PTE_R | PTE_A; new_l3 = PTE_V | PTE_R | PTE_A;
if (prot & VM_PROT_EXECUTE) if (prot & VM_PROT_EXECUTE)
new_l3 |= PTE_X; new_l3 |= PTE_X;
if (flags & VM_PROT_WRITE) if (flags & VM_PROT_WRITE)
new_l3 |= PTE_D; new_l3 |= PTE_D;
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