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Revert 93b9873a56

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- non need to have free PDEs per CPU since we only run one
  instance of the kernel at any time
This commit is contained in:
Tomas Hruby 2012-01-25 18:59:18 +00:00
parent 57b2fe851c
commit 9e1d244cbe
1 changed files with 4 additions and 10 deletions
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14
kernel/arch/i386/memory.c
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@ -31,8 +31,7 @@ PUBLIC int i386_paging_enabled = 0;
PRIVATE int psok = 0; PRIVATE int psok = 0;
#define FREE_PDES_PER_CPU 2 #define MAX_FREEPDES 2
#define MAX_FREEPDES (FREE_PDES_PER_CPU * CONFIG_MAX_CPUS)
PRIVATE int nfreepdes = 0, freepdes[MAX_FREEPDES]; PRIVATE int nfreepdes = 0, freepdes[MAX_FREEPDES];
#define HASPT(procptr) ((procptr)->p_seg.p_cr3 != 0) #define HASPT(procptr) ((procptr)->p_seg.p_cr3 != 0)
@ -80,12 +79,7 @@ PRIVATE phys_bytes createpde(
phys_bytes offset; phys_bytes offset;
int pde; int pde;
assert(free_pde_idx >= 0 && free_pde_idx < FREE_PDES_PER_CPU); assert(free_pde_idx >= 0 && free_pde_idx < nfreepdes);
/* make the index CPU local */
free_pde_idx += cpuid * FREE_PDES_PER_CPU;
assert(free_pde_idx < nfreepdes);
pde = freepdes[free_pde_idx]; pde = freepdes[free_pde_idx];
assert(pde >= 0 && pde < 1024); assert(pde >= 0 && pde < 1024);
@ -145,7 +139,7 @@ PRIVATE int lin_lin_copy(struct proc *srcproc, vir_bytes srclinaddr,
proc_nr_t procslot; proc_nr_t procslot;
assert(vm_running); assert(vm_running);
assert(nfreepdes >= 2); assert(nfreepdes >= MAX_FREEPDES);
assert(get_cpulocal_var(ptproc)); assert(get_cpulocal_var(ptproc));
assert(get_cpulocal_var(proc_ptr)); assert(get_cpulocal_var(proc_ptr));
@ -658,7 +652,7 @@ int vm_phys_memset(phys_bytes ph, const u8_t c, phys_bytes bytes)
return OK; return OK;
} }
assert(nfreepdes >= 2); assert(nfreepdes >= MAX_FREEPDES);
assert(get_cpulocal_var(ptproc)->p_seg.p_cr3_v); assert(get_cpulocal_var(ptproc)->p_seg.p_cr3_v);