| /trunk/kernel/arch/amd64/src/syscall.c |
|---|
| 62,9 → 62,11 |
| write_msr(AMD_MSR_LSTAR, (uint64_t)syscall_entry); |
| /* Mask RFLAGS on syscall |
| * - disable interrupts, until we exchange the stack register |
| * (mask the IE bit) |
| * (mask the IF bit) |
| * - clear DF so that the string instructions operate in |
| * the right direction |
| */ |
| write_msr(AMD_MSR_SFMASK, 0x200); |
| write_msr(AMD_MSR_SFMASK, RFLAGS_IF | RFLAGS_DF); |
| } |
| /** @} |