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Improvements for context switching

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This commit is contained in:
Jeremy Soller 2016-08-30 16:23:51 -06:00
parent 3a232cc60f
commit d3dfff8d51
6 changed files with 68 additions and 27 deletions
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3
arch/x86_64/src/acpi/mod.rs
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@ -3,6 +3,7 @@
use core::intrinsics::{atomic_load, atomic_store};
use interrupt;
use memory::{allocate_frame, Frame};
use paging::{entry, ActivePageTable, Page, PhysicalAddress, VirtualAddress};
use start::kstart_ap;
@ -87,7 +88,7 @@ pub fn init_sdt(sdt: &'static Sdt, active_table: &mut ActivePageTable) {
// Wait for trampoline ready
println!(" Waiting for AP {}", asp_local_apic.id);
while unsafe { atomic_load(ap_ready) } == 0 {
unsafe { asm!("pause" : : : : "intel", "volatile") };
interrupt::pause();
}
println!(" AP {} is ready!", asp_local_apic.id);
} else {