From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/arch/mips/kvm/interrupt.c | 95 +++++++----------------------------------------
1 files changed, 14 insertions(+), 81 deletions(-)
diff --git a/kernel/arch/mips/kvm/interrupt.c b/kernel/arch/mips/kvm/interrupt.c
index aa0a1a0..d28c2c9 100644
--- a/kernel/arch/mips/kvm/interrupt.c
+++ b/kernel/arch/mips/kvm/interrupt.c
@@ -13,7 +13,7 @@
#include <linux/err.h>
#include <linux/vmalloc.h>
#include <linux/fs.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <asm/page.h>
#include <asm/cacheflush.h>
@@ -61,27 +61,8 @@
* the EXC code will be set when we are actually
* delivering the interrupt:
*/
- switch (intr) {
- case 2:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ0));
- /* Queue up an INT exception for the core */
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case 3:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ1));
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case 4:
- kvm_set_c0_guest_cause(vcpu->arch.cop0, (C_IRQ2));
- kvm_mips_queue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_set_c0_guest_cause(vcpu->arch.cop0, 1 << (intr + 8));
+ kvm_mips_queue_irq(vcpu, kvm_irq_to_priority(intr));
}
void kvm_mips_dequeue_io_int_cb(struct kvm_vcpu *vcpu,
@@ -89,26 +70,8 @@
{
int intr = (int)irq->irq;
- switch (intr) {
- case -2:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ0));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IO);
- break;
-
- case -3:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ1));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_1);
- break;
-
- case -4:
- kvm_clear_c0_guest_cause(vcpu->arch.cop0, (C_IRQ2));
- kvm_mips_dequeue_irq(vcpu, MIPS_EXC_INT_IPI_2);
- break;
-
- default:
- break;
- }
-
+ kvm_clear_c0_guest_cause(vcpu->arch.cop0, 1 << (-intr + 8));
+ kvm_mips_dequeue_irq(vcpu, kvm_irq_to_priority(-intr));
}
/* Deliver the interrupt of the corresponding priority, if possible. */
@@ -116,50 +79,20 @@
u32 cause)
{
int allowed = 0;
- u32 exccode;
+ u32 exccode, ie;
struct kvm_vcpu_arch *arch = &vcpu->arch;
struct mips_coproc *cop0 = vcpu->arch.cop0;
- switch (priority) {
- case MIPS_EXC_INT_TIMER:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ5)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
+ if (priority == MIPS_EXC_MAX)
+ return 0;
- case MIPS_EXC_INT_IO:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ0)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- case MIPS_EXC_INT_IPI_1:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ1)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- case MIPS_EXC_INT_IPI_2:
- if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
- && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
- && (kvm_read_c0_guest_status(cop0) & IE_IRQ2)) {
- allowed = 1;
- exccode = EXCCODE_INT;
- }
- break;
-
- default:
- break;
+ ie = 1 << (kvm_priority_to_irq[priority] + 8);
+ if ((kvm_read_c0_guest_status(cop0) & ST0_IE)
+ && (!(kvm_read_c0_guest_status(cop0) & (ST0_EXL | ST0_ERL)))
+ && (kvm_read_c0_guest_status(cop0) & ie)) {
+ allowed = 1;
+ exccode = EXCCODE_INT;
}
/* Are we allowed to deliver the interrupt ??? */
--
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