Re: [PATCH 12/12] x86: Use struct fields instead of bitmasks

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Joe Damato wrote:
Use fields in structs instead of bitmasks for getting/setting descriptor data.

Signed-off-by: Joe Damato <ice799@xxxxxxxxx>
 drivers/lguest/interrupts_and_traps.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/lguest/interrupts_and_traps.c b/drivers/lguest/interrupts_and_traps.c
index bfb24d9..0d9c065 100644
--- a/drivers/lguest/interrupts_and_traps.c
+++ b/drivers/lguest/interrupts_and_traps.c
@@ -178,7 +178,7 @@ void maybe_do_interrupt(struct lg_cpu *cpu)
 	 * over them. */
 	idt = &cpu->arch.idt[FIRST_EXTERNAL_VECTOR+irq];
 	/* If they don't have a handler (yet?), we just ignore it */
-	if (idt_present(idt->a, idt->b)) {
+	if (idt->p) {

No, using an idt_present() accessor is better, but just pass it an idt.

 		/* OK, mark it no longer pending and deliver it. */
 		clear_bit(irq, cpu->irqs_pending);
 		/* set_guest_interrupt() takes the interrupt descriptor and a
@@ -254,7 +254,7 @@ int deliver_trap(struct lg_cpu *cpu, unsigned int num)
/* Early on the Guest hasn't set the IDT entries (or maybe it put a
 	 * bogus one in): if we fail here, the Guest will be killed. */
-	if (!idt_present(cpu->arch.idt[num].a, cpu->arch.idt[num].b))
+	if (!cpu->arch.idt[num].p)
 		return 0;
 	set_guest_interrupt(cpu, desc_lo(cpu->arch.idt[num]),
 			    desc_hi(cpu->arch.idt[num]), has_err(num));
@@ -461,7 +461,7 @@ void copy_traps(const struct lg_cpu *cpu, gate_desc *idt,
 		 * If it can't go direct, we still need to copy the priv. level:
 		 * they might want to give userspace access to a software
 		 * interrupt. */
-		if (idt_type(gidt->a, gidt->b) == 0xF)
+		if (gidt->type == 0xF)

We should have symbolic names for the IDT types.

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