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[mm] Bugs fix for page_install on shadow region (#8308) 

Signed-off-by: Shell <smokewood@qq.com>
This commit is contained in:
Shell 2023-11-30 22:00:54 +08:00 committed by GitHub
parent 6c48d53636
commit c87872c9c7
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1 changed files with 8 additions and 2 deletions
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10
components/mm/mm_page.c
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@ -9,6 +9,7 @@
* 2022-12-13 WangXiaoyao Hot-pluggable, extensible
* page management algorithm
* 2023-02-20 WangXiaoyao Multi-list page-management
* 2023-11-28 Shell Bugs fix for page_install on shadow region
*/
#include <rtthread.h>
@ -862,11 +863,16 @@ static int _load_mpr_area(void *head, void *tail)
int rt_page_install(rt_region_t region)
{
int err = -RT_EINVAL;
rt_region_t shadow;
void *head, *tail;
if (region.end != region.start && !(region.start & ARCH_PAGE_MASK) &&
!(region.end & ARCH_PAGE_MASK))
{
void *head = addr_to_page(page_start, (void *)region.start);
void *tail = addr_to_page(page_start, (void *)region.end);
shadow.start = region.start & ~shadow_mask;
shadow.end = FLOOR(region.end, shadow_mask + 1);
head = addr_to_page(page_start, (void *)shadow.start);
tail = addr_to_page(page_start, (void *)shadow.end);
page_nr += ((region.end - region.start) >> ARCH_PAGE_SHIFT);