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Code Issues Releases Activity

Retire PMAP_DIAGNOSTIC. Any useful diagnostics that were conditionally

Browse Source 
compiled under PMAP_DIAGNOSTIC are now KASSERT()s.  (Note: The kernel
option DIAGNOSTIC still disables inlining of certain pmap functions.)

Eliminate dead code from pmap_enter().  This code implemented an assertion.
On i386, an equivalent check is already implemented.  However, on amd64,
a small change is required to implement an equivalent check.

Eliminate \n from a nearby panic string.

Use KASSERT() to reimplement pmap_copy()'s two assertions.
This commit is contained in:
Alan Cox 2008-01-17 18:25:52 +00:00
parent 1880ccbd79
commit 6634dbbde4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=175404
2 changed files with 19 additions and 53 deletions
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37
sys/amd64/amd64/pmap.c
View File

@ -149,11 +149,7 @@ __FBSDID("$FreeBSD$");
#define PMAP_SHPGPERPROC 200
#endif
#if defined(DIAGNOSTIC)
#define PMAP_DIAGNOSTIC
#endif
#if !defined(PMAP_DIAGNOSTIC)
#if !defined(DIAGNOSTIC)
#define PMAP_INLINE __gnu89_inline
#else
#define PMAP_INLINE
@ -2249,12 +2245,9 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
boolean_t invlva;
va = trunc_page(va);
#ifdef PMAP_DIAGNOSTIC
if (va > VM_MAX_KERNEL_ADDRESS)
panic("pmap_enter: toobig");
if ((va >= UPT_MIN_ADDRESS) && (va < UPT_MAX_ADDRESS))
panic("pmap_enter: invalid to pmap_enter page table pages (va: 0x%lx)", va);
#endif
KASSERT(va <= VM_MAX_KERNEL_ADDRESS, ("pmap_enter: toobig"));
KASSERT(va < UPT_MIN_ADDRESS || va >= UPT_MAX_ADDRESS,
("pmap_enter: invalid to pmap_enter page table pages (va: 0x%lx)", va));
mpte = NULL;
@ -2268,19 +2261,9 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
if (va < VM_MAXUSER_ADDRESS) {
mpte = pmap_allocpte(pmap, va, M_WAITOK);
}
#if 0 && defined(PMAP_DIAGNOSTIC)
else {
pd_entry_t *pdeaddr = pmap_pde(pmap, va);
origpte = *pdeaddr;
if ((origpte & PG_V) == 0) {
panic("pmap_enter: invalid kernel page table page, pde=%p, va=%p\n",
origpte, va);
}
}
#endif
pde = pmap_pde(pmap, va);
if (pde != NULL) {
if (pde != NULL && (*pde & PG_V) != 0) {
if ((*pde & PG_PS) != 0)
panic("pmap_enter: attempted pmap_enter on 2MB page");
pte = pmap_pde_to_pte(pde, va);
@ -2291,7 +2274,7 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
* Page Directory table entry not valid, we need a new PT page
*/
if (pte == NULL)
panic("pmap_enter: invalid page directory va=%#lx\n", va);
panic("pmap_enter: invalid page directory va=%#lx", va);
pa = VM_PAGE_TO_PHYS(m);
om = NULL;
@ -2745,8 +2728,8 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
pdp_entry_t *pdpe;
pd_entry_t srcptepaddr, *pde;
if (addr >= UPT_MIN_ADDRESS)
panic("pmap_copy: invalid to pmap_copy page tables");
KASSERT(addr < UPT_MIN_ADDRESS,
("pmap_copy: invalid to pmap_copy page tables"));
pml4e = pmap_pml4e(src_pmap, addr);
if ((*pml4e & PG_V) == 0) {
@ -2784,8 +2767,8 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
}
srcmpte = PHYS_TO_VM_PAGE(srcptepaddr & PG_FRAME);
if (srcmpte->wire_count == 0)
panic("pmap_copy: source page table page is unused");
KASSERT(srcmpte->wire_count > 0,
("pmap_copy: source page table page is unused"));
if (va_next > end_addr)
va_next = end_addr;

35
sys/i386/i386/pmap.c
View File

@ -158,11 +158,7 @@ __FBSDID("$FreeBSD$");
#define PMAP_SHPGPERPROC 200
#endif
#if defined(DIAGNOSTIC)
#define PMAP_DIAGNOSTIC
#endif
#if !defined(PMAP_DIAGNOSTIC)
#if !defined(DIAGNOSTIC)
#define PMAP_INLINE __gnu89_inline
#else
#define PMAP_INLINE
@ -2308,12 +2304,9 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
boolean_t invlva;
va = trunc_page(va);
#ifdef PMAP_DIAGNOSTIC
if (va > VM_MAX_KERNEL_ADDRESS)
panic("pmap_enter: toobig");
if ((va >= UPT_MIN_ADDRESS) && (va < UPT_MAX_ADDRESS))
panic("pmap_enter: invalid to pmap_enter page table pages (va: 0x%x)", va);
#endif
KASSERT(va <= VM_MAX_KERNEL_ADDRESS, ("pmap_enter: toobig"));
KASSERT(va < UPT_MIN_ADDRESS || va >= UPT_MAX_ADDRESS,
("pmap_enter: invalid to pmap_enter page table pages (va: 0x%x)", va));
mpte = NULL;
@ -2328,16 +2321,6 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
if (va < VM_MAXUSER_ADDRESS) {
mpte = pmap_allocpte(pmap, va, M_WAITOK);
}
#if 0 && defined(PMAP_DIAGNOSTIC)
else {
pd_entry_t *pdeaddr = pmap_pde(pmap, va);
origpte = *pdeaddr;
if ((origpte & PG_V) == 0) {
panic("pmap_enter: invalid kernel page table page, pdir=%p, pde=%p, va=%p\n",
pmap->pm_pdir[PTDPTDI], origpte, va);
}
}
#endif
pde = pmap_pde(pmap, va);
if ((*pde & PG_PS) != 0)
@ -2348,7 +2331,7 @@ pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t m,
* Page Directory table entry not valid, we need a new PT page
*/
if (pte == NULL) {
panic("pmap_enter: invalid page directory pdir=%#jx, va=%#x\n",
panic("pmap_enter: invalid page directory pdir=%#jx, va=%#x",
(uintmax_t)pmap->pm_pdir[PTDPTDI], va);
}
@ -2795,8 +2778,8 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
pd_entry_t srcptepaddr;
unsigned ptepindex;
if (addr >= UPT_MIN_ADDRESS)
panic("pmap_copy: invalid to pmap_copy page tables");
KASSERT(addr < UPT_MIN_ADDRESS,
("pmap_copy: invalid to pmap_copy page tables"));
pdnxt = (addr + NBPDR) & ~PDRMASK;
ptepindex = addr >> PDRSHIFT;
@ -2816,8 +2799,8 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len,
}
srcmpte = PHYS_TO_VM_PAGE(srcptepaddr & PG_FRAME);
if (srcmpte->wire_count == 0)
panic("pmap_copy: source page table page is unused");
KASSERT(srcmpte->wire_count > 0,
("pmap_copy: source page table page is unused"));
if (pdnxt > end_addr)
pdnxt = end_addr;