KolibriOS/kolibrios
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kernel: enable write combined memory type

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git-svn-id: svn://kolibrios.org@5360 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2015-01-06 23:07:34 +00:00
parent 2ce28a4047
commit 75873a0173
4 changed files with 87 additions and 13 deletions
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17
kernel/trunk/kernel.asm
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@@ -351,17 +351,26 @@ high_code:
mov fs, cx
mov gs, bx
xor eax, eax
mov ebx, 0xFFFFF000+PG_SHARED+PG_NOCACHE+PG_UWR
bt [cpu_caps], CAPS_PAT
setc al
shl eax, 7
or ebx, eax
mov eax, PG_GLOBAL
bt [cpu_caps], CAPS_PGE
jnc @F
or [sys_proc+PROC.pdt_0+(OS_BASE shr 20)], eax
or [pte_valid_mask], eax
or ebx, eax
mov ebx, cr4
or ebx, CR4_PGE
mov cr4, ebx
mov eax, cr4
or eax, CR4_PGE
mov cr4, eax
@@:
mov [pte_valid_mask], ebx
xor eax, eax
mov dword [sys_proc+PROC.pdt_0], eax
mov dword [sys_proc+PROC.pdt_0+4], eax