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HV: Fix the problem of copy fail when booting pre-launched VMs

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The length of the ACPI data entry in ve820 tab was 960K, while the
ACPI file is 1MB. It would cause ept unmapped fault when loading the
pre-launched VMs. This patch changes it to 1MB to fix the problem.

And the ACPI data length was missed when calculating
ENTRY_HPA1_LOW_PART2 length. Fixed here too.

The vACPI data and NVS entry size for pre-launched VM is currently
hard-coded. Add VIRT_ACPI_DATA_LEN and VIRT_ACPI_NVS_LEN to replace
them. And build connection with their starting address, too.

Tracked-On: #6507

Signed-off-by: Zhou, Wu <wu.zhou@intel.com>
Reviewed-by: Victor Sun <victor.sun@intel.com>
This commit is contained in:
Zhou, Wu 2021-08-26 17:40:02 +08:00 committed by wenlingz
parent 76f384779c
commit 25ed86e28f
2 changed files with 14 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
hypervisor/arch/x86/guest/ve820.c
View File

@ -204,12 +204,12 @@ static const struct e820_entry pre_ve820_template[E820_MAX_ENTRIES] = {
},
{ /* ACPI Reclaim */
.baseaddr = VIRT_ACPI_DATA_ADDR,/* consecutive from 0x7fe00000UL */
.length = (960U * MEM_1K), /* 960KB */
.length = VIRT_ACPI_DATA_LEN,
.type = E820_TYPE_ACPI_RECLAIM
},
{ /* ACPI NVS */
.baseaddr = VIRT_ACPI_NVS_ADDR, /* consecutive after ACPI Reclaim */
.length = MEM_1M, /* only the first 64KB is used for NVS */
.length = VIRT_ACPI_NVS_LEN,
.type = E820_TYPE_ACPI_NVS
},
{ /* 32bit PCI hole */
@ -243,7 +243,7 @@ static inline uint64_t add_ram_entry(struct e820_entry *entry, uint64_t gpa, uin
* Software SRAM segment rather than hpa1.
* entry4: usable, the part2 of hpa1 in lowmem, from the ceil of Software SRAM segment,
* and up to 2G-1M.
* entry5: ACPI Reclaim from 0x7fe00000 to 0x7feeffff (960K)
* entry5: ACPI Reclaim from 0x7fe00000 to 0x7fefffff (1M)
* entry6: ACPI NVS from 0x7ff00000 to 0x7fffffff (1M)
* Currently this is used by:
* a) first 64k reserved
@ -269,7 +269,7 @@ static inline uint64_t add_ram_entry(struct e820_entry *entry, uint64_t gpa, uin
|<---Software SRAM--->|
|<-----hpa1_low_part2--->|
|<---Non-mapped hole (if there is)-->|
|<---(1M + 960K) ACPI NVS/DATA--->|
|<---(1M + 1M) ACPI NVS/DATA--->|
*/
void create_prelaunched_vm_e820(struct acrn_vm *vm)
{
@ -291,17 +291,18 @@ void create_prelaunched_vm_e820(struct acrn_vm *vm)
hpa1_hi_size = vm_config->memory.size - lowmem_max_length;
gpa_start = add_ram_entry((vm->e820_entries + entry_idx), gpa_start, hpa1_hi_size);
entry_idx++;
} else if (vm_config->memory.size <= MEM_1M + hpa1_part1_max_length + MEM_1M + (960 * MEM_1K)) {
} else if (vm_config->memory.size <= MEM_1M + hpa1_part1_max_length + VIRT_ACPI_DATA_LEN + VIRT_ACPI_NVS_LEN) {
/*
* In this case, hpa1 is only enough for the first
* 1M + part1 + last (1M + 960K) (ACPI NVS/DATA), so part2 will be empty.
* 1M + part1 + last (1M + 1M) (ACPI NVS/DATA), so part2 will be empty.
*/
vm->e820_entries[ENTRY_HPA1_LOW_PART1].length = vm_config->memory.size - MEM_2M - (960 * MEM_1K);
vm->e820_entries[ENTRY_HPA1_LOW_PART1].length =
vm_config->memory.size - MEM_1M - VIRT_ACPI_DATA_LEN - VIRT_ACPI_NVS_LEN;
vm->e820_entries[ENTRY_HPA1_LOW_PART2].length = 0;
} else {
/* Otherwise, part2 is not empty. */
vm->e820_entries[ENTRY_HPA1_LOW_PART2].length =
vm_config->memory.size - PRE_RTVM_SW_SRAM_BASE_GPA - MEM_1M;
vm_config->memory.size - PRE_RTVM_SW_SRAM_BASE_GPA - VIRT_ACPI_DATA_LEN - VIRT_ACPI_NVS_LEN;
/* need to set gpa_start for hpa2 */
}

7
hypervisor/include/dm/vacpi.h
View File

@ -17,8 +17,11 @@
* table which at GPA 0x7fe00080;
* The module file should be generated by acrn-config tool;
*/
#define VIRT_ACPI_DATA_ADDR 0x7fe00000UL
#define VIRT_ACPI_NVS_ADDR 0x7ff00000UL
#define VIRT_ACPI_DATA_LEN MEM_1M
#define VIRT_ACPI_NVS_LEN MEM_1M
/* Currently ACPI NVS start addr is presumed to be consecutive with ACPI DATA area right below 0x80000000 */
#define VIRT_ACPI_NVS_ADDR (0x80000000UL - VIRT_ACPI_NVS_LEN)
#define VIRT_ACPI_DATA_ADDR (VIRT_ACPI_NVS_ADDR - VIRT_ACPI_DATA_LEN)
#define VIRT_RSDP_ADDR 0x000f2400UL
#define VIRT_XSDT_ADDR 0x7fe00080UL