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Fri, 4 Mar 2016 15:48:35 -0500 Authentication-Results: redhat.com; dkim=none (message not signed) header.d=none; redhat.com; dmarc=none action=none header.from=amd.com; Received: from localhost.localdomain (124.121.8.20) by SN1PR12MB0445.namprd12.prod.outlook.com (10.162.105.139) with Microsoft SMTP Server (TLS) id 15.1.415.20; Fri, 4 Mar 2016 20:48:28 +0000 From: Suravee Suthikulpanit To: , , , , , CC: , , , , Suravee Suthikulpanit Subject: [PART1 RFC v2 01/10] KVM: x86: Misc LAPIC changes to exposes helper functions Date: Fri, 4 Mar 2016 14:45:59 -0600 Message-ID: <1457124368-2025-2-git-send-email-Suravee.Suthikulpanit@amd.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1457124368-2025-1-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1457124368-2025-1-git-send-email-Suravee.Suthikulpanit@amd.com> MIME-Version: 1.0 X-Originating-IP: [124.121.8.20] X-ClientProxiedBy: SINPR01CA0045.apcprd01.prod.exchangelabs.com (10.141.109.45) To SN1PR12MB0445.namprd12.prod.outlook.com (25.162.105.139) X-MS-Office365-Filtering-Correlation-Id: bb5e2170-6b42-4f62-5298-08d3446e58d0 X-Microsoft-Exchange-Diagnostics: 1; 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Signed-off-by: Suravee Suthikulpanit --- arch/x86/kvm/lapic.c | 51 +++++++++++++++++++++++++++------------------------ arch/x86/kvm/lapic.h | 7 +++++++ 2 files changed, 34 insertions(+), 24 deletions(-) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 3a045f3..a8d91b89 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -59,9 +59,8 @@ /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */ #define apic_debug(fmt, arg...) -#define APIC_LVT_NUM 6 /* 14 is the version for Xeon and Pentium 8.4.8*/ -#define APIC_VERSION (0x14UL | ((APIC_LVT_NUM - 1) << 16)) +#define APIC_VERSION (0x14UL | ((KVM_APIC_LVT_NUM - 1) << 16)) #define LAPIC_MMIO_LENGTH (1 << 12) /* followed define is not in apicdef.h */ #define APIC_SHORT_MASK 0xc0000 @@ -94,10 +93,11 @@ bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector) apic_test_vector(vector, apic->regs + APIC_IRR); } -static inline void apic_set_vector(int vec, void *bitmap) +void kvm_lapic_set_vector(int vec, void *bitmap) { set_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); } +EXPORT_SYMBOL_GPL(kvm_lapic_set_vector); static inline void apic_clear_vector(int vec, void *bitmap) { @@ -290,7 +290,7 @@ void kvm_apic_set_version(struct kvm_vcpu *vcpu) apic_set_reg(apic, APIC_LVR, v); } -static const unsigned int apic_lvt_mask[APIC_LVT_NUM] = { +static const unsigned int apic_lvt_mask[KVM_APIC_LVT_NUM] = { LVT_MASK , /* part LVTT mask, timer mode mask added at runtime */ LVT_MASK | APIC_MODE_MASK, /* LVTTHMR */ LVT_MASK | APIC_MODE_MASK, /* LVTPC */ @@ -351,7 +351,7 @@ EXPORT_SYMBOL_GPL(kvm_apic_update_irr); static inline void apic_set_irr(int vec, struct kvm_lapic *apic) { - apic_set_vector(vec, apic->regs + APIC_IRR); + kvm_lapic_set_vector(vec, apic->regs + APIC_IRR); /* * irr_pending must be true if any interrupt is pending; set it after * APIC_IRR to avoid race with apic_clear_irr @@ -674,6 +674,7 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, return false; } } +EXPORT_SYMBOL_GPL(kvm_apic_match_dest); bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map) @@ -844,7 +845,7 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, if (apic_test_vector(vector, apic->regs + APIC_TMR) != !!trig_mode) { if (trig_mode) - apic_set_vector(vector, apic->regs + APIC_TMR); + kvm_lapic_set_vector(vector, apic->regs + APIC_TMR); else apic_clear_vector(vector, apic->regs + APIC_TMR); } @@ -1109,7 +1110,7 @@ static inline struct kvm_lapic *to_lapic(struct kvm_io_device *dev) return container_of(dev, struct kvm_lapic, dev); } -static int apic_reg_read(struct kvm_lapic *apic, u32 offset, int len, +int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len, void *data) { unsigned char alignment = offset & 0xf; @@ -1146,6 +1147,7 @@ static int apic_reg_read(struct kvm_lapic *apic, u32 offset, int len, } return 0; } +EXPORT_SYMBOL_GPL(kvm_lapic_reg_read); static int apic_mmio_in_range(struct kvm_lapic *apic, gpa_t addr) { @@ -1163,7 +1165,7 @@ static int apic_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *this, if (!apic_mmio_in_range(apic, address)) return -EOPNOTSUPP; - apic_reg_read(apic, offset, len, data); + kvm_lapic_reg_read(apic, offset, len, data); return 0; } @@ -1348,7 +1350,7 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val) } } -static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val) +int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val) { int ret = 0; @@ -1395,7 +1397,7 @@ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val) int i; u32 lvt_val; - for (i = 0; i < APIC_LVT_NUM; i++) { + for (i = 0; i < KVM_APIC_LVT_NUM; i++) { lvt_val = kvm_apic_get_reg(apic, APIC_LVTT + 0x10 * i); apic_set_reg(apic, APIC_LVTT + 0x10 * i, @@ -1467,7 +1469,7 @@ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val) case APIC_SELF_IPI: if (apic_x2apic_mode(apic)) { - apic_reg_write(apic, APIC_ICR, 0x40000 | (val & 0xff)); + kvm_lapic_reg_write(apic, APIC_ICR, 0x40000 | (val & 0xff)); } else ret = 1; break; @@ -1479,6 +1481,7 @@ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val) apic_debug("Local APIC Write to read-only register %x\n", reg); return ret; } +EXPORT_SYMBOL_GPL(kvm_lapic_reg_write); static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this, gpa_t address, int len, const void *data) @@ -1508,7 +1511,7 @@ static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this, apic_debug("%s: offset 0x%x with length 0x%x, and value is " "0x%x\n", __func__, offset, len, val); - apic_reg_write(apic, offset & 0xff0, val); + kvm_lapic_reg_write(apic, offset & 0xff0, val); return 0; } @@ -1516,7 +1519,7 @@ static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this, void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu) { if (kvm_vcpu_has_lapic(vcpu)) - apic_reg_write(vcpu->arch.apic, APIC_EOI, 0); + kvm_lapic_reg_write(vcpu->arch.apic, APIC_EOI, 0); } EXPORT_SYMBOL_GPL(kvm_lapic_set_eoi); @@ -1528,10 +1531,10 @@ void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset) /* hw has done the conditional check and inst decode */ offset &= 0xff0; - apic_reg_read(vcpu->arch.apic, offset, 4, &val); + kvm_lapic_reg_read(vcpu->arch.apic, offset, 4, &val); /* TODO: optimize to just emulate side effect w/o one more write */ - apic_reg_write(vcpu->arch.apic, offset, val); + kvm_lapic_reg_write(vcpu->arch.apic, offset, val); } EXPORT_SYMBOL_GPL(kvm_apic_write_nodecode); @@ -1670,7 +1673,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event) kvm_apic_set_id(apic, vcpu->vcpu_id); kvm_apic_set_version(apic->vcpu); - for (i = 0; i < APIC_LVT_NUM; i++) + for (i = 0; i < KVM_APIC_LVT_NUM; i++) apic_set_reg(apic, APIC_LVTT + 0x10 * i, APIC_LVT_MASKED); apic_update_lvtt(apic); if (kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_LINT0_REENABLED)) @@ -2073,8 +2076,8 @@ int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data) /* if this is ICR write vector before command */ if (reg == APIC_ICR) - apic_reg_write(apic, APIC_ICR2, (u32)(data >> 32)); - return apic_reg_write(apic, reg, (u32)data); + kvm_lapic_reg_write(apic, APIC_ICR2, (u32)(data >> 32)); + return kvm_lapic_reg_write(apic, reg, (u32)data); } int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data) @@ -2091,10 +2094,10 @@ int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data) return 1; } - if (apic_reg_read(apic, reg, 4, &low)) + if (kvm_lapic_reg_read(apic, reg, 4, &low)) return 1; if (reg == APIC_ICR) - apic_reg_read(apic, APIC_ICR2, 4, &high); + kvm_lapic_reg_read(apic, APIC_ICR2, 4, &high); *data = (((u64)high) << 32) | low; @@ -2110,8 +2113,8 @@ int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 reg, u64 data) /* if this is ICR write vector before command */ if (reg == APIC_ICR) - apic_reg_write(apic, APIC_ICR2, (u32)(data >> 32)); - return apic_reg_write(apic, reg, (u32)data); + kvm_lapic_reg_write(apic, APIC_ICR2, (u32)(data >> 32)); + return kvm_lapic_reg_write(apic, reg, (u32)data); } int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 reg, u64 *data) @@ -2122,10 +2125,10 @@ int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 reg, u64 *data) if (!kvm_vcpu_has_lapic(vcpu)) return 1; - if (apic_reg_read(apic, reg, 4, &low)) + if (kvm_lapic_reg_read(apic, reg, 4, &low)) return 1; if (reg == APIC_ICR) - apic_reg_read(apic, APIC_ICR2, 4, &high); + kvm_lapic_reg_read(apic, APIC_ICR2, 4, &high); *data = (((u64)high) << 32) | low; diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index 41bdb35..936fd10 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -7,6 +7,7 @@ #define KVM_APIC_INIT 0 #define KVM_APIC_SIPI 1 +#define KVM_APIC_LVT_NUM 6 struct kvm_timer { struct hrtimer timer; @@ -56,6 +57,12 @@ void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu); void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); void kvm_apic_set_version(struct kvm_vcpu *vcpu); +void kvm_lapic_set_vector(int vec, void *bitmap); +int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val); +int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len, + void *data); +bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, + int short_hand, unsigned int dest, int dest_mode); void __kvm_apic_update_irr(u32 *pir, void *regs); void kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir);