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Pager struct allocated from boot memory and never referenced after boot.

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We still have to have the pager structs because they possess intermediate
data during boot up such as for transferring of capability lists to
boot stack one-by-one, and then to newly generated ktcbs.
This commit is contained in:
Bahadir Balban
2009-11-03 15:09:28 +02:00
parent 6c69f181db
commit 9248328dd3
3 changed files with 10 additions and 2 deletions
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4
include/l4/generic/container.h
View File

@@ -48,8 +48,8 @@ struct container {
struct id_pool *space_id_pool;
struct mutex_queue_head mutex_queue_head; /* Userspace mutex list */
struct cap_list cap_list; /* Capabilities shared by whole container */
struct pager pager[CONFIG_MAX_PAGERS_USED];
struct cap_list cap_list; /* Capabilities shared by whole container */
struct pager *pager; /* Boot-time array of pagers */
};
/* Compact, raw capability structure */

3
src/generic/container.c
View File

@@ -7,6 +7,7 @@
#include <l4/generic/resource.h>
#include <l4/generic/capability.h>
#include <l4/generic/cap-types.h>
#include <l4/generic/bootmem.h>
#include <l4/api/errno.h>
#include INC_GLUE(memory.h)
#include INC_SUBARCH(mm.h)
@@ -25,6 +26,8 @@ int container_init(struct container *c)
cap_list_init(&c->cap_list);
/* Init pager structs */
c->pager = alloc_bootmem(sizeof(c->pager[0]) *
CONFIG_MAX_PAGERS_USED, 0);
for (int i = 0; i < CONFIG_MAX_PAGERS_USED; i++)
cap_list_init(&c->pager[i].cap_list);

5
src/generic/resource.c
View File

@@ -319,6 +319,7 @@ int memcap_map(struct cap_list *cap_list,
/* Delete all boot memory and add it to physical memory pool. */
int free_boot_memory(struct kernel_resources *kres)
{
struct container *c;
unsigned long pfn_start =
__pfn(virt_to_phys(_start_init));
unsigned long pfn_end =
@@ -334,6 +335,10 @@ int free_boot_memory(struct kernel_resources *kres)
for (unsigned long i = pfn_start; i < pfn_end; i++)
remove_mapping(phys_to_virt(__pfn_to_addr(i)));
/* Reset pointers that will remain in system as precaution */
list_foreach_struct(c, &kres->containers.list, list)
c->pager = 0;
printk("%s: Freed %lu KB init memory.\n",
__KERNELNAME__,
__pfn_to_addr((pfn_end - pfn_start)) / 1024);