cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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posted_intr.h (2576B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __KVM_X86_VMX_POSTED_INTR_H
      3#define __KVM_X86_VMX_POSTED_INTR_H
      4
      5#define POSTED_INTR_ON  0
      6#define POSTED_INTR_SN  1
      7
      8/* Posted-Interrupt Descriptor */
      9struct pi_desc {
     10	u32 pir[8];     /* Posted interrupt requested */
     11	union {
     12		struct {
     13				/* bit 256 - Outstanding Notification */
     14			u16	on	: 1,
     15				/* bit 257 - Suppress Notification */
     16				sn	: 1,
     17				/* bit 271:258 - Reserved */
     18				rsvd_1	: 14;
     19				/* bit 279:272 - Notification Vector */
     20			u8	nv;
     21				/* bit 287:280 - Reserved */
     22			u8	rsvd_2;
     23				/* bit 319:288 - Notification Destination */
     24			u32	ndst;
     25		};
     26		u64 control;
     27	};
     28	u32 rsvd[6];
     29} __aligned(64);
     30
     31static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
     32{
     33	return test_and_set_bit(POSTED_INTR_ON,
     34			(unsigned long *)&pi_desc->control);
     35}
     36
     37static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
     38{
     39	return test_and_clear_bit(POSTED_INTR_ON,
     40			(unsigned long *)&pi_desc->control);
     41}
     42
     43static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
     44{
     45	return test_and_clear_bit(POSTED_INTR_SN,
     46			(unsigned long *)&pi_desc->control);
     47}
     48
     49static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
     50{
     51	return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
     52}
     53
     54static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
     55{
     56	return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
     57}
     58
     59static inline void pi_set_sn(struct pi_desc *pi_desc)
     60{
     61	set_bit(POSTED_INTR_SN,
     62		(unsigned long *)&pi_desc->control);
     63}
     64
     65static inline void pi_set_on(struct pi_desc *pi_desc)
     66{
     67	set_bit(POSTED_INTR_ON,
     68		(unsigned long *)&pi_desc->control);
     69}
     70
     71static inline void pi_clear_on(struct pi_desc *pi_desc)
     72{
     73	clear_bit(POSTED_INTR_ON,
     74		(unsigned long *)&pi_desc->control);
     75}
     76
     77static inline void pi_clear_sn(struct pi_desc *pi_desc)
     78{
     79	clear_bit(POSTED_INTR_SN,
     80		(unsigned long *)&pi_desc->control);
     81}
     82
     83static inline bool pi_test_on(struct pi_desc *pi_desc)
     84{
     85	return test_bit(POSTED_INTR_ON,
     86			(unsigned long *)&pi_desc->control);
     87}
     88
     89static inline bool pi_test_sn(struct pi_desc *pi_desc)
     90{
     91	return test_bit(POSTED_INTR_SN,
     92			(unsigned long *)&pi_desc->control);
     93}
     94
     95void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
     96void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);
     97void pi_wakeup_handler(void);
     98void __init pi_init_cpu(int cpu);
     99bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu);
    100int vmx_pi_update_irte(struct kvm *kvm, unsigned int host_irq,
    101		       uint32_t guest_irq, bool set);
    102void vmx_pi_start_assignment(struct kvm *kvm);
    103
    104#endif /* __KVM_X86_VMX_POSTED_INTR_H */