Fiddling with threading bugs (both Qemu and Bochs hate atm)

[tpg/acess2.git] / Kernel / arch / x86 / include / arch.h

diff --git a/Kernel/arch/x86/include/arch.h b/Kernel/arch/x86/include/arch.h
index eff85fc..464023e 100644 (file)
--- a/Kernel/arch/x86/include/arch.h
+++ b/Kernel/arch/x86/include/arch.h
@@ -61,8 +61,8 @@ static inline void SHORTLOCK(struct sShortSpinlock *Lock) {
        // int  cpu = GetCPUNum() + 1;
        
        // Save interrupt state and clear interrupts
-       __ASM__ ("pushf;\n\tcli;\n\tpop %%eax" : "=a"(IF));
-       IF &= 0x200;
+       __ASM__ ("pushf;\n\tpop %%eax\n\tcli" : "=a"(IF));
+       IF &= 0x200;    // AND out all but the interrupt flag
        
        // Wait for another CPU to release
        while(v)