Imbus/xv6-riscv-kernel
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Fix comment capitalization

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This commit is contained in:
Austin Clements 2010-09-02 16:36:38 -04:00
parent f25a3f9a41
commit 93a1e4cb07
1 changed files with 14 additions and 14 deletions
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28
vm.c
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@ -27,7 +27,7 @@ ksegment(void)
c->gdt[SEG_UCODE] = SEG(STA_X|STA_R, 0, 0xffffffff, DPL_USER);
c->gdt[SEG_UDATA] = SEG(STA_W, 0, 0xffffffff, DPL_USER);
// map cpu, and curproc
// Map cpu, and curproc
c->gdt[SEG_KCPU] = SEG(STA_W, &c->cpu, 8, 0);
lgdt(c->gdt, sizeof(c->gdt));
@ -38,8 +38,8 @@ ksegment(void)
proc = 0;
}
// return the address of the PTE in page table pgdir
// that corresponds to linear address va. if create!=0,
// Return the address of the PTE in page table pgdir
// that corresponds to linear address va. If create!=0,
// create any required page table pages.
static pte_t *
walkpgdir(pde_t *pgdir, const void *va, int create)
@ -65,7 +65,7 @@ walkpgdir(pde_t *pgdir, const void *va, int create)
return &pgtab[PTX(va)];
}
// create PTEs for linear addresses starting at la that refer to
// Create PTEs for linear addresses starting at la that refer to
// physical addresses starting at pa. la and size might not
// be page-aligned.
static int
@ -152,12 +152,12 @@ vmenable(void)
lcr0(cr0);
}
// Switch h/w page table register to the kernel-only page table, for when
// no process is running.
// Switch h/w page table register to the kernel-only page table,
// for when no process is running.
void
switchkvm()
{
lcr3(PADDR(kpgdir)); // Switch to the kernel page table
lcr3(PADDR(kpgdir)); // switch to the kernel page table
}
// Switch h/w page table and TSS registers to point to process p.
@ -180,8 +180,8 @@ switchuvm(struct proc *p)
popcli();
}
// return the physical address that a given user address
// maps to. the result is also a kernel logical address,
// Return the physical address that a given user address
// maps to. The result is also a kernel logical address,
// since the kernel maps the physical memory allocated to user
// processes directly.
char*
@ -224,10 +224,10 @@ loaduvm(pde_t *pgdir, char *addr, struct inode *ip, uint offset, uint sz)
return 1;
}
// allocate sz bytes more memory for a process starting at the
// Allocate sz bytes more memory for a process starting at the
// given user address; allocates physical memory and page
// table entries. addr and sz need not be page-aligned.
// it is a no-op for any parts of the requested memory
// It is a no-op for any parts of the requested memory
// that are already allocated.
int
allocuvm(pde_t *pgdir, char *addr, uint sz)
@ -252,7 +252,7 @@ allocuvm(pde_t *pgdir, char *addr, uint sz)
return 1;
}
// deallocate some of the user pages. if addr is not page-aligned,
// Deallocate some of the user pages. If addr is not page-aligned,
// then only deallocates starting at the next page boundary.
int
deallocuvm(pde_t *pgdir, char *addr, uint sz)
@ -274,7 +274,7 @@ deallocuvm(pde_t *pgdir, char *addr, uint sz)
return 1;
}
// free a page table and all the physical memory pages
// Free a page table and all the physical memory pages
// in the user part.
void
freevm(pde_t *pgdir)
@ -291,7 +291,7 @@ freevm(pde_t *pgdir)
kfree((void *) pgdir);
}
// given a parent process's page table, create a copy
// Given a parent process's page table, create a copy
// of it for a child.
pde_t*
copyuvm(pde_t *pgdir, uint sz)