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KVM: VMX: Move posted interrupt descriptor out of VMX code

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To prepare native usage of posted interrupts, move the PID declarations out
of VMX code such that they can be shared.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20240423174114.526704-2-jacob.jun.pan@linux.intel.com
This commit is contained in:
Jacob Pan 2024-04-23 10:41:03 -07:00 committed by Thomas Gleixner
parent ed30a4a51b
commit 699f67512f
4 changed files with 91 additions and 93 deletions
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88
arch/x86/include/asm/posted_intr.h Normal file
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@ -0,0 +1,88 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _X86_POSTED_INTR_H
#define _X86_POSTED_INTR_H
#define POSTED_INTR_ON 0
#define POSTED_INTR_SN 1
#define PID_TABLE_ENTRY_VALID 1
/* Posted-Interrupt Descriptor */
struct pi_desc {
u32 pir[8]; /* Posted interrupt requested */
union {
struct {
/* bit 256 - Outstanding Notification */
u16 on : 1,
/* bit 257 - Suppress Notification */
sn : 1,
/* bit 271:258 - Reserved */
rsvd_1 : 14;
/* bit 279:272 - Notification Vector */
u8 nv;
/* bit 287:280 - Reserved */
u8 rsvd_2;
/* bit 319:288 - Notification Destination */
u32 ndst;
};
u64 control;
};
u32 rsvd[6];
} __aligned(64);
static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
{
return test_and_set_bit(POSTED_INTR_ON, (unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
{
return test_and_clear_bit(POSTED_INTR_ON, (unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
{
return test_and_clear_bit(POSTED_INTR_SN, (unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
{
return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
}
static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
{
return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
}
static inline void pi_set_sn(struct pi_desc *pi_desc)
{
set_bit(POSTED_INTR_SN, (unsigned long *)&pi_desc->control);
}
static inline void pi_set_on(struct pi_desc *pi_desc)
{
set_bit(POSTED_INTR_ON, (unsigned long *)&pi_desc->control);
}
static inline void pi_clear_on(struct pi_desc *pi_desc)
{
clear_bit(POSTED_INTR_ON, (unsigned long *)&pi_desc->control);
}
static inline void pi_clear_sn(struct pi_desc *pi_desc)
{
clear_bit(POSTED_INTR_SN, (unsigned long *)&pi_desc->control);
}
static inline bool pi_test_on(struct pi_desc *pi_desc)
{
return test_bit(POSTED_INTR_ON, (unsigned long *)&pi_desc->control);
}
static inline bool pi_test_sn(struct pi_desc *pi_desc)
{
return test_bit(POSTED_INTR_SN, (unsigned long *)&pi_desc->control);
}
#endif /* _X86_POSTED_INTR_H */

93
arch/x86/kvm/vmx/posted_intr.h
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@ -1,98 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __KVM_X86_VMX_POSTED_INTR_H
#define __KVM_X86_VMX_POSTED_INTR_H
#define POSTED_INTR_ON 0
#define POSTED_INTR_SN 1
#define PID_TABLE_ENTRY_VALID 1
/* Posted-Interrupt Descriptor */
struct pi_desc {
u32 pir[8]; /* Posted interrupt requested */
union {
struct {
/* bit 256 - Outstanding Notification */
u16 on : 1,
/* bit 257 - Suppress Notification */
sn : 1,
/* bit 271:258 - Reserved */
rsvd_1 : 14;
/* bit 279:272 - Notification Vector */
u8 nv;
/* bit 287:280 - Reserved */
u8 rsvd_2;
/* bit 319:288 - Notification Destination */
u32 ndst;
};
u64 control;
};
u32 rsvd[6];
} __aligned(64);
static inline bool pi_test_and_set_on(struct pi_desc *pi_desc)
{
return test_and_set_bit(POSTED_INTR_ON,
(unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_clear_on(struct pi_desc *pi_desc)
{
return test_and_clear_bit(POSTED_INTR_ON,
(unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_clear_sn(struct pi_desc *pi_desc)
{
return test_and_clear_bit(POSTED_INTR_SN,
(unsigned long *)&pi_desc->control);
}
static inline bool pi_test_and_set_pir(int vector, struct pi_desc *pi_desc)
{
return test_and_set_bit(vector, (unsigned long *)pi_desc->pir);
}
static inline bool pi_is_pir_empty(struct pi_desc *pi_desc)
{
return bitmap_empty((unsigned long *)pi_desc->pir, NR_VECTORS);
}
static inline void pi_set_sn(struct pi_desc *pi_desc)
{
set_bit(POSTED_INTR_SN,
(unsigned long *)&pi_desc->control);
}
static inline void pi_set_on(struct pi_desc *pi_desc)
{
set_bit(POSTED_INTR_ON,
(unsigned long *)&pi_desc->control);
}
static inline void pi_clear_on(struct pi_desc *pi_desc)
{
clear_bit(POSTED_INTR_ON,
(unsigned long *)&pi_desc->control);
}
static inline void pi_clear_sn(struct pi_desc *pi_desc)
{
clear_bit(POSTED_INTR_SN,
(unsigned long *)&pi_desc->control);
}
static inline bool pi_test_on(struct pi_desc *pi_desc)
{
return test_bit(POSTED_INTR_ON,
(unsigned long *)&pi_desc->control);
}
static inline bool pi_test_sn(struct pi_desc *pi_desc)
{
return test_bit(POSTED_INTR_SN,
(unsigned long *)&pi_desc->control);
}
#include <asm/posted_intr.h>
void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu);
void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu);

1
arch/x86/kvm/vmx/vmx.c
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@ -70,6 +70,7 @@
#include "x86.h"
#include "smm.h"
#include "vmx_onhyperv.h"
#include "posted_intr.h"
MODULE_AUTHOR("Qumranet");
MODULE_LICENSE("GPL");

2
arch/x86/kvm/vmx/vmx.h
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@ -7,10 +7,10 @@
#include <asm/kvm.h>
#include <asm/intel_pt.h>
#include <asm/perf_event.h>
#include <asm/posted_intr.h>
#include "capabilities.h"
#include "../kvm_cache_regs.h"
#include "posted_intr.h"
#include "vmcs.h"
#include "vmx_ops.h"
#include "../cpuid.h"