From: Tomas Hruby <tom@minix3.org>
Date: Wed, 25 Jan 2012 18:59:18 +0000 (+0000)
Subject: Revert 93b9873a562b11dfedf5f4e53ef87bf256d80207
X-Git-Tag: v3.2.0~107
X-Git-Url: http://zhaoyanbai.com/repos/icons/apache_pb.png?a=commitdiff_plain;h=9e1d244cbe1268ace88c6fbe8455fcc897067651;p=minix.git

Revert 93b9873a562b11dfedf5f4e53ef87bf256d80207

- non need to have free PDEs per CPU since we only run one
  instance of the kernel at any time
---

diff --git a/kernel/arch/i386/memory.c b/kernel/arch/i386/memory.c
index f70d2c0f6..6ec2f20ff 100644
--- a/kernel/arch/i386/memory.c
+++ b/kernel/arch/i386/memory.c
@@ -31,8 +31,7 @@ PUBLIC int i386_paging_enabled = 0;
 
 PRIVATE int psok = 0;
 
-#define FREE_PDES_PER_CPU	2
-#define MAX_FREEPDES		(FREE_PDES_PER_CPU * CONFIG_MAX_CPUS)
+#define MAX_FREEPDES	2
 PRIVATE int nfreepdes = 0, freepdes[MAX_FREEPDES];
 
 #define HASPT(procptr) ((procptr)->p_seg.p_cr3 != 0)
@@ -80,12 +79,7 @@ PRIVATE phys_bytes createpde(
 	phys_bytes offset;
 	int pde;
 
-	assert(free_pde_idx >= 0 && free_pde_idx < FREE_PDES_PER_CPU);
-
-	/* make the index CPU local */
-	free_pde_idx += cpuid * FREE_PDES_PER_CPU;
-	assert(free_pde_idx < nfreepdes);
-
+	assert(free_pde_idx >= 0 && free_pde_idx < nfreepdes);
 	pde = freepdes[free_pde_idx];
 	assert(pde >= 0 && pde < 1024);
 
@@ -145,7 +139,7 @@ PRIVATE int lin_lin_copy(struct proc *srcproc, vir_bytes srclinaddr,
 	proc_nr_t procslot;
 
 	assert(vm_running);
-	assert(nfreepdes >= 2);
+	assert(nfreepdes >= MAX_FREEPDES);
 
 	assert(get_cpulocal_var(ptproc));
 	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;
 	}
 
-	assert(nfreepdes >= 2);
+	assert(nfreepdes >= MAX_FREEPDES);
 
 	assert(get_cpulocal_var(ptproc)->p_seg.p_cr3_v);