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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ae00d572ae
commit 76b4f357d0e7d8f6f0013c733e6cba1773c266d3 upstream. KVM_MAX_VCPU_ID is the maximum vcpu-id of a guest, and not the number of vcpu-ids. Fix array indexed by vcpu-id to have KVM_MAX_VCPU_ID+1 elements. Note that this is currently no real problem, as KVM_MAX_VCPU_ID is an odd number, resulting in always enough padding being available at the end of those arrays. Nevertheless this should be fixed in order to avoid rare problems in case someone is using an even number for KVM_MAX_VCPU_ID. Signed-off-by: Juergen Gross <jgross@suse.com> Message-Id: <20210701154105.23215-2-jgross@suse.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __KVM_IO_APIC_H
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#define __KVM_IO_APIC_H
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#include <linux/kvm_host.h>
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#include <kvm/iodev.h>
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#include "irq.h"
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struct kvm;
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struct kvm_vcpu;
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#define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
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#define MAX_NR_RESERVED_IOAPIC_PINS KVM_MAX_IRQ_ROUTES
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#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
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#define IOAPIC_EDGE_TRIG 0
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#define IOAPIC_LEVEL_TRIG 1
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#define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
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#define IOAPIC_MEM_LENGTH 0x100
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/* Direct registers. */
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#define IOAPIC_REG_SELECT 0x00
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#define IOAPIC_REG_WINDOW 0x10
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/* Indirect registers. */
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#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
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#define IOAPIC_REG_VERSION 0x01
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#define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
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/*ioapic delivery mode*/
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#define IOAPIC_FIXED 0x0
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#define IOAPIC_LOWEST_PRIORITY 0x1
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#define IOAPIC_PMI 0x2
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#define IOAPIC_NMI 0x4
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#define IOAPIC_INIT 0x5
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#define IOAPIC_EXTINT 0x7
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#ifdef CONFIG_X86
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#define RTC_GSI 8
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#else
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#define RTC_GSI -1U
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#endif
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struct dest_map {
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/* vcpu bitmap where IRQ has been sent */
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DECLARE_BITMAP(map, KVM_MAX_VCPU_ID + 1);
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/*
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* Vector sent to a given vcpu, only valid when
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* the vcpu's bit in map is set
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*/
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u8 vectors[KVM_MAX_VCPU_ID + 1];
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};
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struct rtc_status {
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int pending_eoi;
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struct dest_map dest_map;
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};
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union kvm_ioapic_redirect_entry {
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u64 bits;
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struct {
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u8 vector;
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u8 delivery_mode:3;
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u8 dest_mode:1;
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u8 delivery_status:1;
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u8 polarity:1;
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u8 remote_irr:1;
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u8 trig_mode:1;
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u8 mask:1;
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u8 reserve:7;
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u8 reserved[4];
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u8 dest_id;
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} fields;
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};
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struct kvm_ioapic {
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u64 base_address;
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u32 ioregsel;
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u32 id;
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u32 irr;
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u32 pad;
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union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
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unsigned long irq_states[IOAPIC_NUM_PINS];
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struct kvm_io_device dev;
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struct kvm *kvm;
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void (*ack_notifier)(void *opaque, int irq);
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spinlock_t lock;
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struct rtc_status rtc_status;
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struct delayed_work eoi_inject;
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u32 irq_eoi[IOAPIC_NUM_PINS];
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u32 irr_delivered;
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};
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#ifdef DEBUG
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#define ASSERT(x) \
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do { \
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if (!(x)) { \
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printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
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__FILE__, __LINE__, #x); \
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BUG(); \
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} \
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} while (0)
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#else
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#define ASSERT(x) do { } while (0)
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#endif
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static inline int ioapic_in_kernel(struct kvm *kvm)
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{
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return irqchip_kernel(kvm);
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}
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void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
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void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
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int trigger_mode);
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int kvm_ioapic_init(struct kvm *kvm);
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void kvm_ioapic_destroy(struct kvm *kvm);
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int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
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int level, bool line_status);
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void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
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void kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
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void kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
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void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu,
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ulong *ioapic_handled_vectors);
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void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
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ulong *ioapic_handled_vectors);
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#endif
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