Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423688AbWJZR0A (ORCPT ); Thu, 26 Oct 2006 13:26:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423692AbWJZR0A (ORCPT ); Thu, 26 Oct 2006 13:26:00 -0400 Received: from il.qumranet.com ([62.219.232.206]:46012 "EHLO cleopatra.q") by vger.kernel.org with ESMTP id S1423688AbWJZRZ6 (ORCPT ); Thu, 26 Oct 2006 13:25:58 -0400 Subject: [PATCH 4/13] KVM: random accessors and constants From: Avi Kivity Date: Thu, 26 Oct 2006 17:25:56 -0000 To: linux-kernel@vger.kernel.org, kvm-devel@lists.sourceforge.net References: <4540EE2B.9020606@qumranet.com> In-Reply-To: <4540EE2B.9020606@qumranet.com> Message-Id: <20061026172556.A48DFA0209@cleopatra.q> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5331 Lines: 199 Define some constants and accessors to be used later on. Signed-off-by: Yaniv Kamay Signed-off-by: Avi Kivity Index: linux-2.6/drivers/kvm/kvm.h =================================================================== --- linux-2.6.orig/drivers/kvm/kvm.h +++ linux-2.6/drivers/kvm/kvm.h @@ -7,6 +7,38 @@ #include #include +#include "vmx.h" + +#define CR0_PE_MASK (1ULL << 0) +#define CR0_TS_MASK (1ULL << 3) +#define CR0_NE_MASK (1ULL << 5) +#define CR0_WP_MASK (1ULL << 16) +#define CR0_NW_MASK (1ULL << 29) +#define CR0_CD_MASK (1ULL << 30) +#define CR0_PG_MASK (1ULL << 31) + +#define CR3_WPT_MASK (1ULL << 3) +#define CR3_PCD_MASK (1ULL << 4) + +#define CR3_RESEVED_BITS 0x07ULL +#define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL) +#define CR3_FLAGS_MASK ((1ULL << 5) - 1) + +#define CR4_VME_MASK (1ULL << 0) +#define CR4_PSE_MASK (1ULL << 4) +#define CR4_PAE_MASK (1ULL << 5) +#define CR4_PGE_MASK (1ULL << 7) +#define CR4_VMXE_MASK (1ULL << 13) + +#define KVM_GUEST_CR0_MASK \ + (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK) +#define KVM_VM_CR0_ALWAYS_ON KVM_GUEST_CR0_MASK + +#define KVM_GUEST_CR4_MASK \ + (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK) +#define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK) +#define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK) + #define INVALID_PAGE (~(hpa_t)0) #define UNMAPPED_GVA (~(gpa_t)0) @@ -18,6 +50,19 @@ #define FX_IMAGE_ALIGN 16 #define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN) +#define DE_VECTOR 0 +#define DF_VECTOR 8 +#define TS_VECTOR 10 +#define NP_VECTOR 11 +#define SS_VECTOR 12 +#define GP_VECTOR 13 +#define PF_VECTOR 14 + +#define SELECTOR_TI_MASK (1 << 2) +#define SELECTOR_RPL_MASK 0x03 + +#define IOPL_SHIFT 12 + /* * Address types: * @@ -203,4 +248,125 @@ hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, extern hpa_t bad_page_address; +static inline struct page *gfn_to_page(struct kvm_memory_slot *slot, gfn_t gfn) +{ + return slot->phys_mem[gfn - slot->base_gfn]; +} + +struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); +void mark_page_dirty(struct kvm *kvm, gfn_t gfn); + +void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); +void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); +void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, + unsigned long *rflags); + +unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); +void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, + unsigned long *rflags); + +int kvm_read_guest(struct kvm_vcpu *vcpu, + gva_t addr, + unsigned long size, + void *dest); + +int kvm_write_guest(struct kvm_vcpu *vcpu, + gva_t addr, + unsigned long size, + void *data); + +void vmcs_writel(unsigned long field, unsigned long value); +unsigned long vmcs_readl(unsigned long field); + +static inline u16 vmcs_read16(unsigned long field) +{ + return vmcs_readl(field); +} + +static inline u32 vmcs_read32(unsigned long field) +{ + return vmcs_readl(field); +} + +static inline u64 vmcs_read64(unsigned long field) +{ +#ifdef __x86_64__ + return vmcs_readl(field); +#else + return vmcs_readl(field) | ((u64)vmcs_readl(field+1) << 32); +#endif +} + +static inline void vmcs_write32(unsigned long field, u32 value) +{ + vmcs_writel(field, value); +} + +static inline int is_long_mode(void) +{ + return vmcs_read32(VM_ENTRY_CONTROLS) & VM_ENTRY_CONTROLS_IA32E_MASK; +} + +static inline unsigned long guest_cr4(void) +{ + return (vmcs_readl(CR4_READ_SHADOW) & KVM_GUEST_CR4_MASK) | + (vmcs_readl(GUEST_CR4) & ~KVM_GUEST_CR4_MASK); +} + +static inline int is_pae(void) +{ + return guest_cr4() & CR4_PAE_MASK; +} + +static inline int is_pse(void) +{ + return guest_cr4() & CR4_PSE_MASK; +} + +static inline unsigned long guest_cr0(void) +{ + return (vmcs_readl(CR0_READ_SHADOW) & KVM_GUEST_CR0_MASK) | + (vmcs_readl(GUEST_CR0) & ~KVM_GUEST_CR0_MASK); +} + +static inline unsigned guest_cpl(void) +{ + return vmcs_read16(GUEST_CS_SELECTOR) & SELECTOR_RPL_MASK; +} + +static inline int is_paging(void) +{ + return guest_cr0() & CR0_PG_MASK; +} + +static inline int is_page_fault(u32 intr_info) +{ + return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | + INTR_INFO_VALID_MASK)) == + (INTR_TYPE_EXCEPTION | PF_VECTOR | INTR_INFO_VALID_MASK); +} + +static inline int is_external_interrupt(u32 intr_info) +{ + return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK)) + == (INTR_TYPE_EXT_INTR | INTR_INFO_VALID_MASK); +} + +static inline void flush_guest_tlb(struct kvm_vcpu *vcpu) +{ + vmcs_writel(GUEST_CR3, vmcs_readl(GUEST_CR3)); +} + +static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) +{ + return slot - kvm->memslots; +} + +static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) +{ + struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); + + return (struct kvm_mmu_page *)page->private; +} + #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/