X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_shadow_paging_64.h;h=f0dcd315a72ea069b750bcfaf987eae35480287b;hp=a33d0caa020ba1775b4d4cdb18df5687e34db325;hb=266af4b5b19da7bee8e7445288c7c1cb3ee194c7;hpb=5ac47589b79508967bd06b4022bbfc50de47423f diff --git a/palacios/src/palacios/vmm_shadow_paging_64.h b/palacios/src/palacios/vmm_shadow_paging_64.h index a33d0ca..f0dcd31 100644 --- a/palacios/src/palacios/vmm_shadow_paging_64.h +++ b/palacios/src/palacios/vmm_shadow_paging_64.h @@ -19,24 +19,24 @@ static inline int activate_shadow_pt_64(struct guest_info * info) { - struct cr3_64 * shadow_cr3 = (struct cr3_64 *)&(info->ctrl_regs.cr3); - struct cr3_64 * guest_cr3 = (struct cr3_64 *)&(info->shdw_pg_state.guest_cr3); - struct shadow_page_data * shadow_pt = create_new_shadow_pt(info); - addr_t shadow_pt_addr = shadow_pt->page_pa; + struct cr3_64 * shadow_cr3 = (struct cr3_64 *)&(info->ctrl_regs.cr3); + struct cr3_64 * guest_cr3 = (struct cr3_64 *)&(info->shdw_pg_state.guest_cr3); + struct shadow_page_data * shadow_pt = create_new_shadow_pt(info); + addr_t shadow_pt_addr = shadow_pt->page_pa; - // Because this is a new CR3 load the allocated page is the new CR3 value - shadow_pt->cr3 = shadow_pt->page_pa; + // Because this is a new CR3 load the allocated page is the new CR3 value + shadow_pt->cr3 = shadow_pt->page_pa; - PrintDebug("Top level Shadow page pa=%p\n", (void *)shadow_pt_addr); + PrintDebug("Top level Shadow page pa=%p\n", (void *)shadow_pt_addr); - shadow_cr3->pml4t_base_addr = PAGE_BASE_ADDR_4KB(shadow_pt_addr); - PrintDebug("Creating new 64 bit shadow page table %p\n", (void *)BASE_TO_PAGE_ADDR(shadow_cr3->pml4t_base_addr)); + shadow_cr3->pml4t_base_addr = PAGE_BASE_ADDR_4KB(shadow_pt_addr); + PrintDebug("Creating new 64 bit shadow page table %p\n", (void *)BASE_TO_PAGE_ADDR(shadow_cr3->pml4t_base_addr)); - shadow_cr3->pwt = guest_cr3->pwt; - shadow_cr3->pcd = guest_cr3->pcd; + shadow_cr3->pwt = guest_cr3->pwt; + shadow_cr3->pcd = guest_cr3->pcd; - return 0; + return 0; } @@ -66,99 +66,99 @@ static int handle_pdpe_shadow_pagefault_64(struct guest_info * info, addr_t faul static inline int handle_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) { - pml4e64_t * guest_pml = NULL; - pml4e64_t * shadow_pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3); - addr_t guest_cr3 = CR3_TO_PML4E64_PA(info->shdw_pg_state.guest_cr3); - pt_access_status_t guest_pml4e_access; - pt_access_status_t shadow_pml4e_access; - pml4e64_t * guest_pml4e = NULL; - pml4e64_t * shadow_pml4e = (pml4e64_t *)&(shadow_pml[PML4E64_INDEX(fault_addr)]); - - PrintDebug("64 bit Shadow page fault handler: %p\n", (void *)fault_addr); - PrintDebug("Handling PML fault\n"); - - if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pml) == -1) { - PrintError("Invalid Guest PML4E Address: 0x%p\n", (void *)guest_cr3); - return -1; - } + pml4e64_t * guest_pml = NULL; + pml4e64_t * shadow_pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3); + addr_t guest_cr3 = CR3_TO_PML4E64_PA(info->shdw_pg_state.guest_cr3); + pt_access_status_t guest_pml4e_access; + pt_access_status_t shadow_pml4e_access; + pml4e64_t * guest_pml4e = NULL; + pml4e64_t * shadow_pml4e = (pml4e64_t *)&(shadow_pml[PML4E64_INDEX(fault_addr)]); + + PrintDebug("64 bit Shadow page fault handler: %p\n", (void *)fault_addr); + PrintDebug("Handling PML fault\n"); + + if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pml) == -1) { + PrintError("Invalid Guest PML4E Address: 0x%p\n", (void *)guest_cr3); + return -1; + } - guest_pml4e = (pml4e64_t *)&(guest_pml[PML4E64_INDEX(fault_addr)]); + guest_pml4e = (pml4e64_t *)&(guest_pml[PML4E64_INDEX(fault_addr)]); - PrintDebug("Checking Guest %p\n", (void *)guest_pml); - // Check the guest page permissions - guest_pml4e_access = v3_can_access_pml4e64(guest_pml, fault_addr, error_code); + PrintDebug("Checking Guest %p\n", (void *)guest_pml); + // Check the guest page permissions + guest_pml4e_access = v3_can_access_pml4e64(guest_pml, fault_addr, error_code); - PrintDebug("Checking shadow %p\n", (void *)shadow_pml); - // Check the shadow page permissions - shadow_pml4e_access = v3_can_access_pml4e64(shadow_pml, fault_addr, error_code); + PrintDebug("Checking shadow %p\n", (void *)shadow_pml); + // Check the shadow page permissions + shadow_pml4e_access = v3_can_access_pml4e64(shadow_pml, fault_addr, error_code); - /* Was the page fault caused by the Guest's page tables? */ - if (is_guest_pf(guest_pml4e_access, shadow_pml4e_access) == 1) { - PrintDebug("Injecting PML4E pf to guest: (guest access error=%d) (pf error code=%d)\n", - *(uint_t *)&guest_pml4e_access, *(uint_t *)&error_code); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } - - if (shadow_pml4e_access == PT_ACCESS_USER_ERROR) { - // - // PML4 Entry marked non-user - // - PrintDebug("Shadow Paging User access error (shadow_pml4e_access=0x%x, guest_pml4e_access=0x%x)\n", - shadow_pml4e_access, guest_pml4e_access); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } else if ((shadow_pml4e_access != PT_ACCESS_NOT_PRESENT) && - (shadow_pml4e_access != PT_ACCESS_OK)) { - // inject page fault in guest - inject_guest_pf(info, fault_addr, error_code); - PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pml4e_access); - PrintDebug("Manual Says to inject page fault into guest\n"); - return 0; - } + /* Was the page fault caused by the Guest's page tables? */ + if (is_guest_pf(guest_pml4e_access, shadow_pml4e_access) == 1) { + PrintDebug("Injecting PML4E pf to guest: (guest access error=%d) (pf error code=%d)\n", + *(uint_t *)&guest_pml4e_access, *(uint_t *)&error_code); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } + + if (shadow_pml4e_access == PT_ACCESS_USER_ERROR) { + // + // PML4 Entry marked non-user + // + PrintDebug("Shadow Paging User access error (shadow_pml4e_access=0x%x, guest_pml4e_access=0x%x)\n", + shadow_pml4e_access, guest_pml4e_access); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } else if ((shadow_pml4e_access != PT_ACCESS_NOT_PRESENT) && + (shadow_pml4e_access != PT_ACCESS_OK)) { + // inject page fault in guest + inject_guest_pf(info, fault_addr, error_code); + PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pml4e_access); + PrintDebug("Manual Says to inject page fault into guest\n"); + return 0; + } - pdpe64_t * shadow_pdp = NULL; - pdpe64_t * guest_pdp = NULL; + pdpe64_t * shadow_pdp = NULL; + pdpe64_t * guest_pdp = NULL; - // Get the next shadow page level, allocate if not present + // Get the next shadow page level, allocate if not present - if (shadow_pml4e_access == PT_ACCESS_NOT_PRESENT) { - struct shadow_page_data * shdw_page = create_new_shadow_pt(info); - shadow_pdp = (pdpe64_t *)V3_VAddr((void *)shdw_page->page_pa); + if (shadow_pml4e_access == PT_ACCESS_NOT_PRESENT) { + struct shadow_page_data * shdw_page = create_new_shadow_pt(info); + shadow_pdp = (pdpe64_t *)V3_VAddr((void *)shdw_page->page_pa); - shadow_pml4e->present = 1; - shadow_pml4e->user_page = guest_pml4e->user_page; - shadow_pml4e->writable = guest_pml4e->writable; + shadow_pml4e->present = 1; + shadow_pml4e->user_page = guest_pml4e->user_page; + shadow_pml4e->writable = guest_pml4e->writable; - // VMM Specific options - shadow_pml4e->write_through = 0; - shadow_pml4e->cache_disable = 0; - // + // VMM Specific options + shadow_pml4e->write_through = 0; + shadow_pml4e->cache_disable = 0; + // - guest_pml4e->accessed = 1; + guest_pml4e->accessed = 1; - shadow_pml4e->pdp_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); - } else { - shadow_pdp = (pdpe64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pml4e->pdp_base_addr)); - } + shadow_pml4e->pdp_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); + } else { + shadow_pdp = (pdpe64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pml4e->pdp_base_addr)); + } - // Continue processing at the next level + // Continue processing at the next level - if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) { - // Machine check the guest - PrintDebug("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr)); - v3_raise_exception(info, MC_EXCEPTION); - return 0; - } + if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) { + // Machine check the guest + PrintDebug("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr)); + v3_raise_exception(info, MC_EXCEPTION); + return 0; + } - if (handle_pdpe_shadow_pagefault_64(info, fault_addr, error_code, shadow_pdp, guest_pdp) == -1) { - PrintError("Error handling Page fault caused by PDPE\n"); - return -1; - } + if (handle_pdpe_shadow_pagefault_64(info, fault_addr, error_code, shadow_pdp, guest_pdp) == -1) { + PrintError("Error handling Page fault caused by PDPE\n"); + return -1; + } - return 0; + return 0; } @@ -166,344 +166,344 @@ static inline int handle_shadow_pagefault_64(struct guest_info * info, addr_t fa // For now we are not going to handle 1 Gigabyte pages static int handle_pdpe_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code, pdpe64_t * shadow_pdp, pdpe64_t * guest_pdp) { - pt_access_status_t guest_pdpe_access; - pt_access_status_t shadow_pdpe_access; - pdpe64_t * guest_pdpe = (pdpe64_t *)&(guest_pdp[PDPE64_INDEX(fault_addr)]); - pdpe64_t * shadow_pdpe = (pdpe64_t *)&(shadow_pdp[PDPE64_INDEX(fault_addr)]); + pt_access_status_t guest_pdpe_access; + pt_access_status_t shadow_pdpe_access; + pdpe64_t * guest_pdpe = (pdpe64_t *)&(guest_pdp[PDPE64_INDEX(fault_addr)]); + pdpe64_t * shadow_pdpe = (pdpe64_t *)&(shadow_pdp[PDPE64_INDEX(fault_addr)]); - PrintDebug("Handling PDP fault\n"); + PrintDebug("Handling PDP fault\n"); - if (fault_addr==0) { - PrintDebug("Guest Page Tree for guest virtual address zero fault\n"); - PrintGuestPageTree(info,fault_addr,(addr_t)(info->shdw_pg_state.guest_cr3)); - PrintDebug("Host Page Tree for guest virtual address zero fault\n"); - PrintHostPageTree(info,fault_addr,(addr_t)(info->ctrl_regs.cr3)); - } + if (fault_addr==0) { + PrintDebug("Guest Page Tree for guest virtual address zero fault\n"); + PrintGuestPageTree(info,fault_addr,(addr_t)(info->shdw_pg_state.guest_cr3)); + PrintDebug("Host Page Tree for guest virtual address zero fault\n"); + PrintHostPageTree(info,fault_addr,(addr_t)(info->ctrl_regs.cr3)); + } - // Check the guest page permissions - guest_pdpe_access = v3_can_access_pdpe64(guest_pdp, fault_addr, error_code); + // Check the guest page permissions + guest_pdpe_access = v3_can_access_pdpe64(guest_pdp, fault_addr, error_code); - // Check the shadow page permissions - shadow_pdpe_access = v3_can_access_pdpe64(shadow_pdp, fault_addr, error_code); + // Check the shadow page permissions + shadow_pdpe_access = v3_can_access_pdpe64(shadow_pdp, fault_addr, error_code); - /* Was the page fault caused by the Guest's page tables? */ - if (is_guest_pf(guest_pdpe_access, shadow_pdpe_access) == 1) { - PrintDebug("Injecting PDPE pf to guest: (guest access error=%d) (pf error code=%d)\n", - *(uint_t *)&guest_pdpe_access, *(uint_t *)&error_code); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } - - if (shadow_pdpe_access == PT_ACCESS_USER_ERROR) { - // - // PML4 Entry marked non-user - // - PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n", - shadow_pdpe_access, guest_pdpe_access); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } else if ((shadow_pdpe_access != PT_ACCESS_NOT_PRESENT) && - (shadow_pdpe_access != PT_ACCESS_OK)) { - // inject page fault in guest - inject_guest_pf(info, fault_addr, error_code); - PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pdpe_access); - PrintDebug("Manual Says to inject page fault into guest\n"); - return 0; - } + /* Was the page fault caused by the Guest's page tables? */ + if (is_guest_pf(guest_pdpe_access, shadow_pdpe_access) == 1) { + PrintDebug("Injecting PDPE pf to guest: (guest access error=%d) (pf error code=%d)\n", + *(uint_t *)&guest_pdpe_access, *(uint_t *)&error_code); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } + + if (shadow_pdpe_access == PT_ACCESS_USER_ERROR) { + // + // PML4 Entry marked non-user + // + PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n", + shadow_pdpe_access, guest_pdpe_access); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } else if ((shadow_pdpe_access != PT_ACCESS_NOT_PRESENT) && + (shadow_pdpe_access != PT_ACCESS_OK)) { + // inject page fault in guest + inject_guest_pf(info, fault_addr, error_code); + PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pdpe_access); + PrintDebug("Manual Says to inject page fault into guest\n"); + return 0; + } - pde64_t * shadow_pd = NULL; - pde64_t * guest_pd = NULL; + pde64_t * shadow_pd = NULL; + pde64_t * guest_pd = NULL; - // Get the next shadow page level, allocate if not present + // Get the next shadow page level, allocate if not present - if (shadow_pdpe_access == PT_ACCESS_NOT_PRESENT) { - struct shadow_page_data * shdw_page = create_new_shadow_pt(info); - shadow_pd = (pde64_t *)V3_VAddr((void *)shdw_page->page_pa); + if (shadow_pdpe_access == PT_ACCESS_NOT_PRESENT) { + struct shadow_page_data * shdw_page = create_new_shadow_pt(info); + shadow_pd = (pde64_t *)V3_VAddr((void *)shdw_page->page_pa); - shadow_pdpe->present = 1; - shadow_pdpe->user_page = guest_pdpe->user_page; - shadow_pdpe->writable = guest_pdpe->writable; + shadow_pdpe->present = 1; + shadow_pdpe->user_page = guest_pdpe->user_page; + shadow_pdpe->writable = guest_pdpe->writable; - // VMM Specific options - shadow_pdpe->write_through = 0; - shadow_pdpe->cache_disable = 0; - // + // VMM Specific options + shadow_pdpe->write_through = 0; + shadow_pdpe->cache_disable = 0; + // - guest_pdpe->accessed = 1; + guest_pdpe->accessed = 1; - shadow_pdpe->pd_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); - } else { - shadow_pd = (pde64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pdpe->pd_base_addr)); - } + shadow_pdpe->pd_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); + } else { + shadow_pd = (pde64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(shadow_pdpe->pd_base_addr)); + } - // Continue processing at the next level + // Continue processing at the next level - if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) { - // Machine check the guest - PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr)); - v3_raise_exception(info, MC_EXCEPTION); - return 0; - } + if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) { + // Machine check the guest + PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr)); + v3_raise_exception(info, MC_EXCEPTION); + return 0; + } - if (handle_pde_shadow_pagefault_64(info, fault_addr, error_code, shadow_pd, guest_pd) == -1) { - PrintError("Error handling Page fault caused by PDE\n"); - return -1; - } + if (handle_pde_shadow_pagefault_64(info, fault_addr, error_code, shadow_pd, guest_pd) == -1) { + PrintError("Error handling Page fault caused by PDE\n"); + return -1; + } - return 0; + return 0; } static int handle_pde_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code, pde64_t * shadow_pd, pde64_t * guest_pd) { - pt_access_status_t guest_pde_access; - pt_access_status_t shadow_pde_access; - pde64_t * guest_pde = (pde64_t *)&(guest_pd[PDE64_INDEX(fault_addr)]); - pde64_t * shadow_pde = (pde64_t *)&(shadow_pd[PDE64_INDEX(fault_addr)]); + pt_access_status_t guest_pde_access; + pt_access_status_t shadow_pde_access; + pde64_t * guest_pde = (pde64_t *)&(guest_pd[PDE64_INDEX(fault_addr)]); + pde64_t * shadow_pde = (pde64_t *)&(shadow_pd[PDE64_INDEX(fault_addr)]); - PrintDebug("Handling PDE fault\n"); + PrintDebug("Handling PDE fault\n"); - // Check the guest page permissions - guest_pde_access = v3_can_access_pde64(guest_pd, fault_addr, error_code); + // Check the guest page permissions + guest_pde_access = v3_can_access_pde64(guest_pd, fault_addr, error_code); - // Check the shadow page permissions - shadow_pde_access = v3_can_access_pde64(shadow_pd, fault_addr, error_code); + // Check the shadow page permissions + shadow_pde_access = v3_can_access_pde64(shadow_pd, fault_addr, error_code); - /* Was the page fault caused by the Guest's page tables? */ - if (is_guest_pf(guest_pde_access, shadow_pde_access) == 1) { - PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (pf error code=%d)\n", - *(uint_t *)&guest_pde_access, *(uint_t *)&error_code); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } - - if (shadow_pde_access == PT_ACCESS_USER_ERROR) { - // - // PDE Entry marked non-user - // - PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n", - shadow_pde_access, guest_pde_access); - inject_guest_pf(info, fault_addr, error_code); - return 0; + /* Was the page fault caused by the Guest's page tables? */ + if (is_guest_pf(guest_pde_access, shadow_pde_access) == 1) { + PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (pf error code=%d)\n", + *(uint_t *)&guest_pde_access, *(uint_t *)&error_code); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } - } else if ((shadow_pde_access == PT_ACCESS_WRITE_ERROR) && - (guest_pde->large_page == 1)) { + if (shadow_pde_access == PT_ACCESS_USER_ERROR) { + // + // PDE Entry marked non-user + // + PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n", + shadow_pde_access, guest_pde_access); + inject_guest_pf(info, fault_addr, error_code); + return 0; - ((pde64_2MB_t *)guest_pde)->dirty = 1; - shadow_pde->writable = guest_pde->writable; + } else if ((shadow_pde_access == PT_ACCESS_WRITE_ERROR) && + (guest_pde->large_page == 1)) { - //PrintDebug("Returning due to large page Write Error\n"); - //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); + ((pde64_2MB_t *)guest_pde)->dirty = 1; + shadow_pde->writable = guest_pde->writable; - return 0; - } else if ((shadow_pde_access != PT_ACCESS_NOT_PRESENT) && - (shadow_pde_access != PT_ACCESS_OK)) { - // inject page fault in guest - inject_guest_pf(info, fault_addr, error_code); - PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access); - PrintDebug("Manual Says to inject page fault into guest\n"); - return 0; - } + //PrintDebug("Returning due to large page Write Error\n"); + //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); + + return 0; + } else if ((shadow_pde_access != PT_ACCESS_NOT_PRESENT) && + (shadow_pde_access != PT_ACCESS_OK)) { + // inject page fault in guest + inject_guest_pf(info, fault_addr, error_code); + PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access); + PrintDebug("Manual Says to inject page fault into guest\n"); + return 0; + } - pte64_t * shadow_pt = NULL; - pte64_t * guest_pt = NULL; + pte64_t * shadow_pt = NULL; + pte64_t * guest_pt = NULL; - // Get the next shadow page level, allocate if not present + // Get the next shadow page level, allocate if not present - if (shadow_pde_access == PT_ACCESS_NOT_PRESENT) { - struct shadow_page_data * shdw_page = create_new_shadow_pt(info); - shadow_pt = (pte64_t *)V3_VAddr((void *)shdw_page->page_pa); + if (shadow_pde_access == PT_ACCESS_NOT_PRESENT) { + struct shadow_page_data * shdw_page = create_new_shadow_pt(info); + shadow_pt = (pte64_t *)V3_VAddr((void *)shdw_page->page_pa); - PrintDebug("Creating new shadow PT: %p\n", shadow_pt); + PrintDebug("Creating new shadow PT: %p\n", shadow_pt); - shadow_pde->present = 1; - shadow_pde->user_page = guest_pde->user_page; + shadow_pde->present = 1; + shadow_pde->user_page = guest_pde->user_page; - if (guest_pde->large_page == 0) { - shadow_pde->writable = guest_pde->writable; - } else { - // This large page flag is temporary until we can get a working cache.... - ((pde64_2MB_t *)guest_pde)->vmm_info = V3_LARGE_PG; + if (guest_pde->large_page == 0) { + shadow_pde->writable = guest_pde->writable; + } else { + // This large page flag is temporary until we can get a working cache.... + ((pde64_2MB_t *)guest_pde)->vmm_info = V3_LARGE_PG; - if (error_code.write) { - shadow_pde->writable = guest_pde->writable; - ((pde64_2MB_t *)guest_pde)->dirty = 1; - } else { - shadow_pde->writable = 0; - ((pde64_2MB_t *)guest_pde)->dirty = 0; - } - } + if (error_code.write) { + shadow_pde->writable = guest_pde->writable; + ((pde64_2MB_t *)guest_pde)->dirty = 1; + } else { + shadow_pde->writable = 0; + ((pde64_2MB_t *)guest_pde)->dirty = 0; + } + } - // VMM Specific options - shadow_pde->write_through = 0; - shadow_pde->cache_disable = 0; - shadow_pde->global_page = 0; - // + // VMM Specific options + shadow_pde->write_through = 0; + shadow_pde->cache_disable = 0; + shadow_pde->global_page = 0; + // - guest_pde->accessed = 1; + guest_pde->accessed = 1; - shadow_pde->pt_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); - } else { - shadow_pt = (pte64_t *)V3_VAddr((void *)BASE_TO_PAGE_ADDR(shadow_pde->pt_base_addr)); - } - - // Continue processing at the next level - if (guest_pde->large_page == 0) { - if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) { - // Machine check the guest - PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr)); - v3_raise_exception(info, MC_EXCEPTION); - return 0; + shadow_pde->pt_base_addr = PAGE_BASE_ADDR(shdw_page->page_pa); + } else { + shadow_pt = (pte64_t *)V3_VAddr((void *)BASE_TO_PAGE_ADDR(shadow_pde->pt_base_addr)); } + + // Continue processing at the next level + if (guest_pde->large_page == 0) { + if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) { + // Machine check the guest + PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr)); + v3_raise_exception(info, MC_EXCEPTION); + return 0; + } - if (handle_pte_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, guest_pt) == -1) { - PrintError("Error handling Page fault caused by PDE\n"); - return -1; + if (handle_pte_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, guest_pt) == -1) { + PrintError("Error handling Page fault caused by PDE\n"); + return -1; + } + } else { + if (handle_2MB_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, (pde64_2MB_t *)guest_pde) == -1) { + PrintError("Error handling large pagefault\n"); + return -1; + } } - } else { - if (handle_2MB_shadow_pagefault_64(info, fault_addr, error_code, shadow_pt, (pde64_2MB_t *)guest_pde) == -1) { - PrintError("Error handling large pagefault\n"); - return -1; - } - } - return 0; + return 0; } static int handle_pte_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code, pte64_t * shadow_pt, pte64_t * guest_pt) { - pt_access_status_t guest_pte_access; - pt_access_status_t shadow_pte_access; - pte64_t * guest_pte = (pte64_t *)&(guest_pt[PTE64_INDEX(fault_addr)]);; - pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]); - addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr); - // struct shadow_page_state * state = &(info->shdw_pg_state); + pt_access_status_t guest_pte_access; + pt_access_status_t shadow_pte_access; + pte64_t * guest_pte = (pte64_t *)&(guest_pt[PTE64_INDEX(fault_addr)]);; + pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]); + addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr); + // struct shadow_page_state * state = &(info->shdw_pg_state); - PrintDebug("Handling PTE fault\n"); + PrintDebug("Handling PTE fault\n"); - struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_pa); + struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_pa); - if ((shdw_reg == NULL) || - (shdw_reg->host_type == SHDW_REGION_INVALID)) { - // Inject a machine check in the guest - PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa); - v3_raise_exception(info, MC_EXCEPTION); - return 0; - } + if ((shdw_reg == NULL) || + (shdw_reg->host_type == SHDW_REGION_INVALID)) { + // Inject a machine check in the guest + PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa); + v3_raise_exception(info, MC_EXCEPTION); + return 0; + } - // Check the guest page permissions - guest_pte_access = v3_can_access_pte64(guest_pt, fault_addr, error_code); + // Check the guest page permissions + guest_pte_access = v3_can_access_pte64(guest_pt, fault_addr, error_code); - // Check the shadow page permissions - shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code); + // Check the shadow page permissions + shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code); - /* Was the page fault caused by the Guest's page tables? */ - if (is_guest_pf(guest_pte_access, shadow_pte_access) == 1) { - PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n", - guest_pte_access, *(uint_t*)&error_code); - inject_guest_pf(info, fault_addr, error_code); - return 0; - } + /* Was the page fault caused by the Guest's page tables? */ + if (is_guest_pf(guest_pte_access, shadow_pte_access) == 1) { + PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n", + guest_pte_access, *(uint_t*)&error_code); + inject_guest_pf(info, fault_addr, error_code); + return 0; + } - if (shadow_pte_access == PT_ACCESS_OK) { - // Inconsistent state... - // Guest Re-Entry will flush page tables and everything should now work - PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n"); - return 0; - } + if (shadow_pte_access == PT_ACCESS_OK) { + // Inconsistent state... + // Guest Re-Entry will flush page tables and everything should now work + PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n"); + return 0; + } - if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) { - // Page Table Entry Not Present - PrintDebug("guest_pa =%p\n", (void *)guest_pa); + if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) { + // Page Table Entry Not Present + PrintDebug("guest_pa =%p\n", (void *)guest_pa); - if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) || - (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) { - addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_pa); + if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) || + (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) { + addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_pa); - shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa); + shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa); - shadow_pte->present = guest_pte->present; - shadow_pte->user_page = guest_pte->user_page; + shadow_pte->present = guest_pte->present; + shadow_pte->user_page = guest_pte->user_page; - //set according to VMM policy - shadow_pte->write_through = 0; - shadow_pte->cache_disable = 0; - shadow_pte->global_page = 0; - // + //set according to VMM policy + shadow_pte->write_through = 0; + shadow_pte->cache_disable = 0; + shadow_pte->global_page = 0; + // - guest_pte->accessed = 1; + guest_pte->accessed = 1; - if (guest_pte->dirty == 1) { - shadow_pte->writable = guest_pte->writable; - } else if ((guest_pte->dirty == 0) && (error_code.write == 1)) { - shadow_pte->writable = guest_pte->writable; + if (guest_pte->dirty == 1) { + shadow_pte->writable = guest_pte->writable; + } else if ((guest_pte->dirty == 0) && (error_code.write == 1)) { + shadow_pte->writable = guest_pte->writable; + guest_pte->dirty = 1; + } else if ((guest_pte->dirty == 0) && (error_code.write == 0)) { + shadow_pte->writable = 0; + } + + // dirty flag has been set, check if its in the cache + /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */ + /* if (error_code.write == 1) { */ + /* state->cached_cr3 = 0; */ + /* shadow_pte->writable = guest_pte->writable; */ + /* } else { */ + /* shadow_pte->writable = 0; */ + /* } */ + /* } */ + + // Write hooks trump all, and are set Read Only + if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { + shadow_pte->writable = 0; + } + + } else { + // Page fault handled by hook functions + + if (v3_handle_mem_full_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) { + PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr); + return -1; + } + } + } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) { guest_pte->dirty = 1; - } else if ((guest_pte->dirty == 0) && (error_code.write == 0)) { - shadow_pte->writable = 0; - } - - // dirty flag has been set, check if its in the cache -/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */ -/* if (error_code.write == 1) { */ -/* state->cached_cr3 = 0; */ -/* shadow_pte->writable = guest_pte->writable; */ -/* } else { */ -/* shadow_pte->writable = 0; */ -/* } */ -/* } */ - - // Write hooks trump all, and are set Read Only - if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { - shadow_pte->writable = 0; - } - } else { - // Page fault handled by hook functions + if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { + if (v3_handle_mem_wr_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) { + PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr); + return -1; + } + } else { + PrintDebug("Shadow PTE Write Error\n"); + shadow_pte->writable = guest_pte->writable; + } - if (v3_handle_mem_full_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) { - PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr); - return -1; - } - } - } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) { - guest_pte->dirty = 1; + /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */ + /* struct shadow_page_state * state = &(info->shdw_pg_state); */ + /* PrintDebug("Write operation on Guest PAge Table Page\n"); */ + /* state->cached_cr3 = 0; */ + /* } */ + + return 0; - if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { - if (v3_handle_mem_wr_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) { - PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr); - return -1; - } } else { - PrintDebug("Shadow PTE Write Error\n"); - shadow_pte->writable = guest_pte->writable; + // Inject page fault into the guest + inject_guest_pf(info, fault_addr, error_code); + PrintError("PTE Page fault fell through... Not sure if this should ever happen\n"); + PrintError("Manual Says to inject page fault into guest\n"); + return -1; } -/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */ -/* struct shadow_page_state * state = &(info->shdw_pg_state); */ -/* PrintDebug("Write operation on Guest PAge Table Page\n"); */ -/* state->cached_cr3 = 0; */ -/* } */ - return 0; - - } else { - // Inject page fault into the guest - inject_guest_pf(info, fault_addr, error_code); - PrintError("PTE Page fault fell through... Not sure if this should ever happen\n"); - PrintError("Manual Says to inject page fault into guest\n"); - return -1; - } - - return 0; } @@ -512,109 +512,109 @@ static int handle_2MB_shadow_pagefault_64(struct guest_info * info, addr_t fault_addr, pf_error_t error_code, pte64_t * shadow_pt, pde64_2MB_t * large_guest_pde) { - pt_access_status_t shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code); - pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]); - addr_t guest_fault_pa = BASE_TO_PAGE_ADDR_2MB(large_guest_pde->page_base_addr) + PAGE_OFFSET_2MB(fault_addr); - // struct shadow_page_state * state = &(info->shdw_pg_state); + pt_access_status_t shadow_pte_access = v3_can_access_pte64(shadow_pt, fault_addr, error_code); + pte64_t * shadow_pte = (pte64_t *)&(shadow_pt[PTE64_INDEX(fault_addr)]); + addr_t guest_fault_pa = BASE_TO_PAGE_ADDR_2MB(large_guest_pde->page_base_addr) + PAGE_OFFSET_2MB(fault_addr); + // struct shadow_page_state * state = &(info->shdw_pg_state); - PrintDebug("Handling 2MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code); - PrintDebug("ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde); + PrintDebug("Handling 2MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code); + PrintDebug("ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde); - struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_fault_pa); + struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_fault_pa); - if ((shdw_reg == NULL) || - (shdw_reg->host_type == SHDW_REGION_INVALID)) { - // Inject a machine check in the guest - PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa); - v3_raise_exception(info, MC_EXCEPTION); - return -1; - } + if ((shdw_reg == NULL) || + (shdw_reg->host_type == SHDW_REGION_INVALID)) { + // Inject a machine check in the guest + PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa); + v3_raise_exception(info, MC_EXCEPTION); + return -1; + } - if (shadow_pte_access == PT_ACCESS_OK) { - // Inconsistent state... - // Guest Re-Entry will flush tables and everything should now workd - PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n"); - //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); - return 0; - } + if (shadow_pte_access == PT_ACCESS_OK) { + // Inconsistent state... + // Guest Re-Entry will flush tables and everything should now workd + PrintDebug("Inconsistent state... Guest re-entry should flush tlb\n"); + //PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); + return 0; + } - if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) { - // Get the guest physical address of the fault + if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) { + // Get the guest physical address of the fault - if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) || - (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) { - addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_fault_pa); + if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) || + (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) { + addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_fault_pa); - PrintDebug("Shadow PA=%p, ShadowPTE=%p\n", (void *)shadow_pa, (void *)shadow_pte); + PrintDebug("Shadow PA=%p, ShadowPTE=%p\n", (void *)shadow_pa, (void *)shadow_pte); - shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa); - PrintDebug("Test1\n"); + shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa); + PrintDebug("Test1\n"); - shadow_pte->present = 1; + shadow_pte->present = 1; - /* We are assuming that the PDE entry has precedence - * so the Shadow PDE will mirror the guest PDE settings, - * and we don't have to worry about them here - * Allow everything - */ - shadow_pte->user_page = 1; + /* We are assuming that the PDE entry has precedence + * so the Shadow PDE will mirror the guest PDE settings, + * and we don't have to worry about them here + * Allow everything + */ + shadow_pte->user_page = 1; -/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */ -/* // Check if the entry is a page table... */ -/* PrintDebug("Marking page as Guest Page Table (large page)\n"); */ -/* shadow_pte->writable = 0; */ -/* } else */ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { - shadow_pte->writable = 0; - } else { - shadow_pte->writable = 1; - } + /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */ + /* // Check if the entry is a page table... */ + /* PrintDebug("Marking page as Guest Page Table (large page)\n"); */ + /* shadow_pte->writable = 0; */ + /* } else */ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { + shadow_pte->writable = 0; + } else { + shadow_pte->writable = 1; + } - //set according to VMM policy - shadow_pte->write_through = 0; - shadow_pte->cache_disable = 0; - shadow_pte->global_page = 0; - // + //set according to VMM policy + shadow_pte->write_through = 0; + shadow_pte->cache_disable = 0; + shadow_pte->global_page = 0; + // - } else { - // Handle hooked pages as well as other special pages - // if (handle_special_page_fault(info, fault_addr, guest_fault_pa, error_code) == -1) { + } else { + // Handle hooked pages as well as other special pages + // if (handle_special_page_fault(info, fault_addr, guest_fault_pa, error_code) == -1) { - if (v3_handle_mem_full_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) { - PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr); - return -1; - } - } - } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) { + if (v3_handle_mem_full_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) { + PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr); + return -1; + } + } + } else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) { - if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { + if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) { - if (v3_handle_mem_wr_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) { - PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr); - return -1; - } - } + if (v3_handle_mem_wr_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) { + PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr); + return -1; + } + } -/* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */ -/* struct shadow_page_state * state = &(info->shdw_pg_state); */ -/* PrintDebug("Write operation on Guest PAge Table Page (large page)\n"); */ -/* state->cached_cr3 = 0; */ -/* shadow_pte->writable = 1; */ -/* } */ + /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */ + /* struct shadow_page_state * state = &(info->shdw_pg_state); */ + /* PrintDebug("Write operation on Guest PAge Table Page (large page)\n"); */ + /* state->cached_cr3 = 0; */ + /* shadow_pte->writable = 1; */ + /* } */ - } else { - PrintError("Error in large page fault handler...\n"); - PrintError("This case should have been handled at the top level handler\n"); - return -1; - } + } else { + PrintError("Error in large page fault handler...\n"); + PrintError("This case should have been handled at the top level handler\n"); + return -1; + } - // PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); - PrintDebug("Returning from large page fault handler\n"); - return 0; + // PrintHostPageTree(info, fault_addr, info->ctrl_regs.cr3); + PrintDebug("Returning from large page fault handler\n"); + return 0; } @@ -624,79 +624,79 @@ static int invalidation_cb_64(struct guest_info * info, page_type_t type, addr_t vaddr, addr_t page_ptr, addr_t page_pa, void * private_data) { - switch (type) { - case PAGE_PML464: - { - pml4e64_t * pml = (pml4e64_t *)page_ptr; - - if (pml[PML4E64_INDEX(vaddr)].present == 0) { - return 1; - } - return 0; - } - case PAGE_PDP64: - { - pdpe64_t * pdp = (pdpe64_t *)page_ptr; - pdpe64_t * pdpe = &(pdp[PDPE64_INDEX(vaddr)]); - - if (pdpe->present == 0) { - return 1; - } + switch (type) { + case PAGE_PML464: + { + pml4e64_t * pml = (pml4e64_t *)page_ptr; + + if (pml[PML4E64_INDEX(vaddr)].present == 0) { + return 1; + } + return 0; + } + case PAGE_PDP64: + { + pdpe64_t * pdp = (pdpe64_t *)page_ptr; + pdpe64_t * pdpe = &(pdp[PDPE64_INDEX(vaddr)]); + + if (pdpe->present == 0) { + return 1; + } - if (pdpe->vmm_info == V3_LARGE_PG) { - PrintError("1 Gigabyte pages not supported\n"); - return -1; - - pdpe->present = 0; - return 1; - } - - return 0; - } - case PAGE_PD64: - { - pde64_t * pd = (pde64_t *)page_ptr; - pde64_t * pde = &(pd[PDE64_INDEX(vaddr)]); - - if (pde->present == 0) { - return 1; - } + if (pdpe->vmm_info == V3_LARGE_PG) { + PrintError("1 Gigabyte pages not supported\n"); + return -1; + + pdpe->present = 0; + return 1; + } + + return 0; + } + case PAGE_PD64: + { + pde64_t * pd = (pde64_t *)page_ptr; + pde64_t * pde = &(pd[PDE64_INDEX(vaddr)]); + + if (pde->present == 0) { + return 1; + } - if (pde->vmm_info == V3_LARGE_PG) { - pde->present = 0; - return 1; - } + if (pde->vmm_info == V3_LARGE_PG) { + pde->present = 0; + return 1; + } - return 0; - } - case PAGE_PT64: - { - pte64_t * pt = (pte64_t *)page_ptr; + return 0; + } + case PAGE_PT64: + { + pte64_t * pt = (pte64_t *)page_ptr; - pt[PTE64_INDEX(vaddr)].present = 0; + pt[PTE64_INDEX(vaddr)].present = 0; - return 1; - } - default: - PrintError("Invalid Page Type\n"); - return -1; + return 1; + } + default: + PrintError("Invalid Page Type\n"); + return -1; - } + } - // should not get here - PrintError("Should not get here....\n"); - return -1; + // should not get here + PrintError("Should not get here....\n"); + return -1; } static inline int handle_shadow_invlpg_64(struct guest_info * info, addr_t vaddr) { - PrintDebug("INVLPG64 - %p\n",(void*)vaddr); + PrintDebug("INVLPG64 - %p\n",(void*)vaddr); - int ret = v3_drill_host_pt_64(info, info->ctrl_regs.cr3, vaddr, invalidation_cb_64, NULL); - if (ret == -1) { - PrintError("Page table drill returned error.... \n"); - PrintHostPageTree(info, vaddr, info->ctrl_regs.cr3); - } + int ret = v3_drill_host_pt_64(info, info->ctrl_regs.cr3, vaddr, invalidation_cb_64, NULL); + if (ret == -1) { + PrintError("Page table drill returned error.... \n"); + PrintHostPageTree(info, vaddr, info->ctrl_regs.cr3); + } - return (ret == -1) ? -1 : 0; + return (ret == -1) ? -1 : 0; }