Changeset 0dc2fec in mainline for kernel/arch/amd64/src/boot/multiboot2.S
- Timestamp:
- 2016-05-22T19:19:43Z (9 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- b272c67a
- Parents:
- 153c7a29 (diff), af2254ec (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
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- 1 edited
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kernel/arch/amd64/src/boot/multiboot2.S
r153c7a29 r0dc2fec 209 209 210 210 movl %cr4, %eax 211 btsl $5, %eax211 orl $CR4_PAE, %eax 212 212 movl %eax, %cr4 213 213 … … 217 217 218 218 /* Enable long mode */ 219 movl $ EFER_MSR_NUM, %ecx219 movl $AMD_MSR_EFER, %ecx 220 220 rdmsr /* read EFER */ 221 btsl $AMD_LME_FLAG, %eax/* set LME = 1 */221 orl $AMD_LME, %eax /* set LME = 1 */ 222 222 wrmsr 223 223 224 224 /* Enable paging to activate long mode (set CR0.PG = 1) */ 225 225 movl %cr0, %eax 226 btsl $31, %eax226 orl $CR0_PG, %eax 227 227 movl %eax, %cr0 228 228
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