X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_direct_paging.c;h=92601c4da0336672c8b5169a620de3d6578c4b65;hb=16db015d4bcec7b3f9e25eb8dbb6796c4d85550a;hp=d244aacb89944c01ba9519548574794770e8dc0f;hpb=81a57a6aa9705663af95c6330a9911c4b34df75c;p=palacios.git diff --git a/palacios/src/palacios/vmm_direct_paging.c b/palacios/src/palacios/vmm_direct_paging.c index d244aac..92601c4 100644 --- a/palacios/src/palacios/vmm_direct_paging.c +++ b/palacios/src/palacios/vmm_direct_paging.c @@ -24,9 +24,24 @@ #include #include + +#ifndef V3_CONFIG_DEBUG_NESTED_PAGING +#undef PrintDebug +#define PrintDebug(fmt, args...) +#endif + + static addr_t create_generic_pt_page() { void * page = 0; - page = V3_VAddr(V3_AllocPages(1)); + void *temp; + + temp = V3_AllocPages(1); + if (!temp) { + PrintError(VM_NONE, VCORE_NONE,"Cannot allocate page\n"); + return 0; + } + + page = V3_VAddr(temp); memset(page, 0, PAGE_SIZE); return (addr_t)page; @@ -35,15 +50,65 @@ static addr_t create_generic_pt_page() { // Inline handler functions for each cpu mode #include "vmm_direct_paging_32.h" #include "vmm_direct_paging_32pae.h" +#include "vmm_direct_paging_64.h" + +int v3_init_passthrough_pts(struct guest_info * info) { + info->direct_map_pt = (addr_t)V3_PAddr((void *)create_generic_pt_page()); + return 0; +} -addr_t v3_create_direct_passthrough_pts(struct guest_info * info) { - return create_generic_pt_page(); +int v3_free_passthrough_pts(struct guest_info * core) { + v3_cpu_mode_t mode = v3_get_vm_cpu_mode(core); + + // Delete the old direct map page tables + switch(mode) { + case REAL: + case PROTECTED: + delete_page_tables_32((pde32_t *)V3_VAddr((void *)(core->direct_map_pt))); + break; + case PROTECTED_PAE: + case LONG: + case LONG_32_COMPAT: + // Long mode will only use 32PAE page tables... + delete_page_tables_32pae((pdpe32pae_t *)V3_VAddr((void *)(core->direct_map_pt))); + break; + default: + PrintError(core->vm_info, core, "Unknown CPU Mode\n"); + return -1; + break; + } + + return 0; } -int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) { - v3_vm_cpu_mode_t mode = v3_get_cpu_mode(info); + +int v3_reset_passthrough_pts(struct guest_info * core) { + + v3_free_passthrough_pts(core); + + // create new direct map page table + v3_init_passthrough_pts(core); + return 0; +} + + + +int v3_activate_passthrough_pt(struct guest_info * info) { + // For now... But we need to change this.... + // As soon as shadow paging becomes active the passthrough tables are hosed + // So this will cause chaos if it is called at that time + + info->ctrl_regs.cr3 = *(addr_t*)&(info->direct_map_pt); + //PrintError(info->vm_info, info, "Activate Passthrough Page tables not implemented\n"); + return 0; +} + + +int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) { + v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info); + switch(mode) { case REAL: case PROTECTED: @@ -56,8 +121,136 @@ int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr, return handle_passthrough_pagefault_32pae(info, fault_addr, error_code); default: - PrintError("Unknown CPU Mode\n"); + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); + break; + } + return -1; +} + + + +int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) { + v3_cpu_mode_t mode = v3_get_host_cpu_mode(); + + + PrintDebug(info->vm_info, info, "Nested PageFault: fault_addr=%p, error_code=%u\n", (void *)fault_addr, *(uint_t *)&error_code); + + switch(mode) { + case REAL: + case PROTECTED: + return handle_passthrough_pagefault_32(info, fault_addr, error_code); + + case PROTECTED_PAE: + return handle_passthrough_pagefault_32pae(info, fault_addr, error_code); + + case LONG: + case LONG_32_COMPAT: + return handle_passthrough_pagefault_64(info, fault_addr, error_code); + + default: + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); + break; + } + return -1; +} + +int v3_invalidate_passthrough_addr(struct guest_info * info, addr_t inv_addr) { + v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info); + + switch(mode) { + case REAL: + case PROTECTED: + return invalidate_addr_32(info, inv_addr); + + case PROTECTED_PAE: + case LONG: + case LONG_32_COMPAT: + // Long mode will only use 32PAE page tables... + return invalidate_addr_32pae(info, inv_addr); + + default: + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); + break; + } + return -1; +} + + +int v3_invalidate_passthrough_addr_range(struct guest_info * info, + addr_t inv_addr_start, addr_t inv_addr_end) { + v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info); + + switch(mode) { + case REAL: + case PROTECTED: + return invalidate_addr_32_range(info, inv_addr_start, inv_addr_end); + + case PROTECTED_PAE: + case LONG: + case LONG_32_COMPAT: + // Long mode will only use 32PAE page tables... + return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end); + + default: + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); + break; + } + return -1; +} + +int v3_invalidate_nested_addr(struct guest_info * info, addr_t inv_addr) { + +#ifdef __V3_64BIT__ + v3_cpu_mode_t mode = LONG; +#else + v3_cpu_mode_t mode = PROTECTED; +#endif + + switch(mode) { + case REAL: + case PROTECTED: + return invalidate_addr_32(info, inv_addr); + + case PROTECTED_PAE: + return invalidate_addr_32pae(info, inv_addr); + + case LONG: + case LONG_32_COMPAT: + return invalidate_addr_64(info, inv_addr); + + default: + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); break; } + + return -1; +} + +int v3_invalidate_nested_addr_range(struct guest_info * info, + addr_t inv_addr_start, addr_t inv_addr_end) { + +#ifdef __V3_64BIT__ + v3_cpu_mode_t mode = LONG; +#else + v3_cpu_mode_t mode = PROTECTED; +#endif + + switch(mode) { + case REAL: + case PROTECTED: + return invalidate_addr_32_range(info, inv_addr_start, inv_addr_end); + + case PROTECTED_PAE: + return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end); + + case LONG: + case LONG_32_COMPAT: + return invalidate_addr_64_range(info, inv_addr_start, inv_addr_end); + + default: + PrintError(info->vm_info, info, "Unknown CPU Mode\n"); + break; + } + return -1; }