Commit 97011120 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
Browse files

Set WP bit in CR0 to make write protection work


Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 63254428
......@@ -9,6 +9,7 @@
#endif
#define X86_CR0_PE 0x00000001
#define X86_CR0_WP 0x00010000
#define X86_CR0_PG 0x80000000
#define X86_CR4_PSE 0x00000010
static void *free = 0;
......@@ -176,7 +177,7 @@ static void setup_mmu(unsigned long len)
#ifndef __x86_64__
write_cr4(X86_CR4_PSE);
#endif
write_cr0(X86_CR0_PG |X86_CR0_PE);
write_cr0(X86_CR0_PG |X86_CR0_PE | X86_CR0_WP);
printf("paging enabled\n");
printf("cr0 = %x\n", read_cr0());
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment