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Give RS a page table.

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This commit is contained in:
Cristiano Giuffrida
2010-06-28 21:53:37 +00:00
parent 869a223d43
commit 06700d05d1
16 changed files with 205 additions and 45 deletions
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6
kernel/system/do_safecopy.c
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@@ -23,8 +23,6 @@
#define MEM_TOP 0xFFFFFFFFUL
#define USE_COW_SAFECOPY 0
FORWARD _PROTOTYPE(int safecopy, (struct proc *, endpoint_t, endpoint_t,
cp_grant_id_t, int, int, size_t, vir_bytes, vir_bytes, int));
@@ -240,7 +238,7 @@ int access; /* CPF_READ for a copy from granter to grantee, CPF_WRITE
endpoint_t new_granter, *src, *dst;
struct proc *granter_p;
int r;
#if USE_COW_SAFECOPY
#if PERF_USE_COW_SAFECOPY
vir_bytes size;
#endif
@@ -290,7 +288,7 @@ int access; /* CPF_READ for a copy from granter to grantee, CPF_WRITE
}
/* Do the regular copy. */
#if USE_COW_SAFECOPY
#if PERF_USE_COW_SAFECOPY
if(v_offset % CLICK_SIZE != addr % CLICK_SIZE || bytes < CLICK_SIZE) {
/* Give up on COW immediately when offsets are not aligned
* or we are copying less than a page.