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EFI updates for v6.13

Browse Source 
- Align handling of the compiled-in command line with the core kernel
 
 - Measure the initrd into the TPM also when it was loaded via the EFI
   file I/O protocols
 
 - Clean up TPM event log handling
 
 - Sanity check the EFI memory attributes table, and apply it after kexec
   too
 
 - Assorted other fixes
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Merge tag 'efi-next-for-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI updates from Ard Biesheuvel:
 "Just some cleanups and bug fixes this time around:

   - Align handling of the compiled-in command line with the core kernel

   - Measure the initrd into the TPM also when it was loaded via the EFI
     file I/O protocols

   - Clean up TPM event log handling

   - Sanity check the EFI memory attributes table, and apply it after
     kexec too

   - Assorted other fixes"

* tag 'efi-next-for-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Fix memory leak in efivar_ssdt_load
  efi/libstub: Take command line overrides into account for loaded files
  efi/libstub: Fix command line fallback handling when loading files
  efi/libstub: Parse builtin command line after bootloader provided one
  x86/efi: Apply EFI Memory Attributes after kexec
  x86/efi: Drop support for the EFI_PROPERTIES_TABLE
  efi/memattr: Ignore table if the size is clearly bogus
  efi/zboot: Fix outdated comment about using LoadImage/StartImage
  efi/libstub: Free correct pointer on failure
  libstub,tpm: do not ignore failure case when reading final event log
  tpm: fix unsigned/signed mismatch errors related to __calc_tpm2_event_size
  tpm: do not ignore memblock_reserve return value
  tpm: fix signed/unsigned bug when checking event logs
  efi/libstub: measure initrd to PCR9 independent of source
  efi/libstub: remove unnecessary cmd_line_len from efi_convert_cmdline()
  efi/libstub: fix efi_parse_options() ignoring the default command line
This commit is contained in:
Linus Torvalds 2024-11-20 14:13:28 -08:00
commit 18a411cc5d
14 changed files with 117 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
arch/x86/platform/efi/efi.c
View File

@ -54,14 +54,12 @@
#include <asm/uv/uv.h>
static unsigned long efi_systab_phys __initdata;
static unsigned long prop_phys = EFI_INVALID_TABLE_ADDR;
static unsigned long uga_phys = EFI_INVALID_TABLE_ADDR;
static unsigned long efi_runtime, efi_nr_tables;
unsigned long efi_fw_vendor, efi_config_table;
static const efi_config_table_type_t arch_tables[] __initconst = {
{EFI_PROPERTIES_TABLE_GUID, &prop_phys, "PROP" },
{UGA_IO_PROTOCOL_GUID, &uga_phys, "UGA" },
#ifdef CONFIG_X86_UV
{UV_SYSTEM_TABLE_GUID, &uv_systab_phys, "UVsystab" },
@ -82,7 +80,6 @@ static const unsigned long * const efi_tables[] = {
&efi_runtime,
&efi_config_table,
&efi.esrt,
&prop_phys,
&efi_mem_attr_table,
#ifdef CONFIG_EFI_RCI2_TABLE
&rci2_table_phys,
@ -502,22 +499,6 @@ void __init efi_init(void)
return;
}
/* Parse the EFI Properties table if it exists */
if (prop_phys != EFI_INVALID_TABLE_ADDR) {
efi_properties_table_t *tbl;
tbl = early_memremap_ro(prop_phys, sizeof(*tbl));
if (tbl == NULL) {
pr_err("Could not map Properties table!\n");
} else {
if (tbl->memory_protection_attribute &
EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA)
set_bit(EFI_NX_PE_DATA, &efi.flags);
early_memunmap(tbl, sizeof(*tbl));
}
}
set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
efi_clean_memmap();
@ -784,6 +765,7 @@ static void __init kexec_enter_virtual_mode(void)
efi_sync_low_kernel_mappings();
efi_native_runtime_setup();
efi_runtime_update_mappings();
#endif
}

42
arch/x86/platform/efi/efi_64.c
View File

@ -412,51 +412,9 @@ static int __init efi_update_mem_attr(struct mm_struct *mm, efi_memory_desc_t *m
void __init efi_runtime_update_mappings(void)
{
efi_memory_desc_t *md;
/*
* Use the EFI Memory Attribute Table for mapping permissions if it
* exists, since it is intended to supersede EFI_PROPERTIES_TABLE.
*/
if (efi_enabled(EFI_MEM_ATTR)) {
efi_disable_ibt_for_runtime = false;
efi_memattr_apply_permissions(NULL, efi_update_mem_attr);
return;
}
/*
* EFI_MEMORY_ATTRIBUTES_TABLE is intended to replace
* EFI_PROPERTIES_TABLE. So, use EFI_PROPERTIES_TABLE to update
* permissions only if EFI_MEMORY_ATTRIBUTES_TABLE is not
* published by the firmware. Even if we find a buggy implementation of
* EFI_MEMORY_ATTRIBUTES_TABLE, don't fall back to
* EFI_PROPERTIES_TABLE, because of the same reason.
*/
if (!efi_enabled(EFI_NX_PE_DATA))
return;
for_each_efi_memory_desc(md) {
unsigned long pf = 0;
if (!(md->attribute & EFI_MEMORY_RUNTIME))
continue;
if (!(md->attribute & EFI_MEMORY_WB))
pf |= _PAGE_PCD;
if ((md->attribute & EFI_MEMORY_XP) ||
(md->type == EFI_RUNTIME_SERVICES_DATA))
pf |= _PAGE_NX;
if (!(md->attribute & EFI_MEMORY_RO) &&
(md->type != EFI_RUNTIME_SERVICES_CODE))
pf |= _PAGE_RW;
if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
pf |= _PAGE_ENC;
efi_update_mappings(md, pf);
}
}

10
drivers/firmware/efi/Kconfig
View File

@ -84,12 +84,10 @@ config EFI_ZBOOT
help
Create the bootable image as an EFI application that carries the
actual kernel image in compressed form, and decompresses it into
memory before executing it via LoadImage/StartImage EFI boot service
calls. For compatibility with non-EFI loaders, the payload can be
decompressed and executed by the loader as well, provided that the
loader implements the decompression algorithm and that non-EFI boot
is supported by the encapsulated image. (The compression algorithm
used is described in the zboot image header)
memory before executing it. For compatibility with non-EFI loaders,
the payload can be decompressed and executed by the loader as well,
provided that the loader implements the decompression algorithm.
(The compression algorithm used is described in the zboot header)
config EFI_ARMSTUB_DTB_LOADER
bool "Enable the DTB loader"

41
drivers/firmware/efi/efi.c
View File

@ -273,6 +273,7 @@ static __init int efivar_ssdt_load(void)
efi_char16_t *name = NULL;
efi_status_t status;
efi_guid_t guid;
int ret = 0;
if (!efivar_ssdt[0])
return 0;
@ -294,8 +295,8 @@ static __init int efivar_ssdt_load(void)
efi_char16_t *name_tmp =
krealloc(name, name_size, GFP_KERNEL);
if (!name_tmp) {
kfree(name);
return -ENOMEM;
ret = -ENOMEM;
goto out;
}
name = name_tmp;
continue;
@ -309,26 +310,38 @@ static __init int efivar_ssdt_load(void)
pr_info("loading SSDT from variable %s-%pUl\n", efivar_ssdt, &guid);
status = efi.get_variable(name, &guid, NULL, &data_size, NULL);
if (status != EFI_BUFFER_TOO_SMALL || !data_size)
return -EIO;
if (status != EFI_BUFFER_TOO_SMALL || !data_size) {
ret = -EIO;
goto out;
}
data = kmalloc(data_size, GFP_KERNEL);
if (!data)
return -ENOMEM;
if (!data) {
ret = -ENOMEM;
goto out;
}
status = efi.get_variable(name, &guid, NULL, &data_size, data);
if (status == EFI_SUCCESS) {
acpi_status ret = acpi_load_table(data, NULL);
if (ret)
pr_err("failed to load table: %u\n", ret);
else
acpi_status acpi_ret = acpi_load_table(data, NULL);
if (ACPI_FAILURE(acpi_ret)) {
pr_err("efivar_ssdt: failed to load table: %u\n",
acpi_ret);
} else {
/*
* The @data will be in use by ACPI engine,
* do not free it!
*/
continue;
}
} else {
pr_err("failed to get var data: 0x%lx\n", status);
pr_err("efivar_ssdt: failed to get var data: 0x%lx\n", status);
}
kfree(data);
}
return 0;
out:
kfree(name);
return ret;
}
#else
static inline int efivar_ssdt_load(void) { return 0; }
@ -433,7 +446,9 @@ static int __init efisubsys_init(void)
error = generic_ops_register();
if (error)
goto err_put;
efivar_ssdt_load();
error = efivar_ssdt_load();
if (error)
pr_err("efi: failed to load SSDT, error %d.\n", error);
platform_device_register_simple("efivars", 0, NULL, 0);
}

12
drivers/firmware/efi/libstub/efi-stub-helper.c
View File

@ -327,7 +327,7 @@ fail:
* Size of memory allocated return in *cmd_line_len.
* Returns NULL on error.
*/
char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len)
char *efi_convert_cmdline(efi_loaded_image_t *image)
{
const efi_char16_t *options = efi_table_attr(image, load_options);
u32 options_size = efi_table_attr(image, load_options_size);
@ -405,7 +405,6 @@ char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len)
snprintf((char *)cmdline_addr, options_bytes, "%.*ls",
options_bytes - 1, options);
*cmd_line_len = options_bytes;
return (char *)cmdline_addr;
}
@ -621,10 +620,6 @@ efi_status_t efi_load_initrd(efi_loaded_image_t *image,
status = efi_load_initrd_dev_path(&initrd, hard_limit);
if (status == EFI_SUCCESS) {
efi_info("Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path\n");
if (initrd.size > 0 &&
efi_measure_tagged_event(initrd.base, initrd.size,
EFISTUB_EVT_INITRD) == EFI_SUCCESS)
efi_info("Measured initrd data into PCR 9\n");
} else if (status == EFI_NOT_FOUND) {
status = efi_load_initrd_cmdline(image, &initrd, soft_limit,
hard_limit);
@ -637,6 +632,11 @@ efi_status_t efi_load_initrd(efi_loaded_image_t *image,
if (status != EFI_SUCCESS)
goto failed;
if (initrd.size > 0 &&
efi_measure_tagged_event(initrd.base, initrd.size,
EFISTUB_EVT_INITRD) == EFI_SUCCESS)
efi_info("Measured initrd data into PCR 9\n");
status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, sizeof(initrd),
(void **)&tbl);
if (status != EFI_SUCCESS)

26
drivers/firmware/efi/libstub/efi-stub.c
View File

@ -112,7 +112,6 @@ static u32 get_supported_rt_services(void)
efi_status_t efi_handle_cmdline(efi_loaded_image_t *image, char **cmdline_ptr)
{
int cmdline_size = 0;
efi_status_t status;
char *cmdline;
@ -121,35 +120,32 @@ efi_status_t efi_handle_cmdline(efi_loaded_image_t *image, char **cmdline_ptr)
* protocol. We are going to copy the command line into the
* device tree, so this can be allocated anywhere.
*/
cmdline = efi_convert_cmdline(image, &cmdline_size);
cmdline = efi_convert_cmdline(image);
if (!cmdline) {
efi_err("getting command line via LOADED_IMAGE_PROTOCOL\n");
return EFI_OUT_OF_RESOURCES;
}
if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) ||
IS_ENABLED(CONFIG_CMDLINE_FORCE) ||
cmdline_size == 0) {
status = efi_parse_options(CONFIG_CMDLINE);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
if (!IS_ENABLED(CONFIG_CMDLINE_FORCE)) {
status = efi_parse_options(cmdline);
if (status != EFI_SUCCESS)
goto fail_free_cmdline;
}
}
if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && cmdline_size > 0) {
status = efi_parse_options(cmdline);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) ||
IS_ENABLED(CONFIG_CMDLINE_FORCE) ||
cmdline[0] == 0) {
status = efi_parse_options(CONFIG_CMDLINE);
if (status != EFI_SUCCESS)
goto fail_free_cmdline;
}
}
*cmdline_ptr = cmdline;
return EFI_SUCCESS;
fail_free_cmdline:
efi_bs_call(free_pool, cmdline_ptr);
efi_err("Failed to parse options\n");
efi_bs_call(free_pool, cmdline);
return status;
}

2
drivers/firmware/efi/libstub/efistub.h
View File

@ -1056,7 +1056,7 @@ void efi_free(unsigned long size, unsigned long addr);
void efi_apply_loadoptions_quirk(const void **load_options, u32 *load_options_size);
char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len);
char *efi_convert_cmdline(efi_loaded_image_t *image);
efi_status_t efi_get_memory_map(struct efi_boot_memmap **map,
bool install_cfg_tbl);

22
drivers/firmware/efi/libstub/file.c
View File

@ -175,6 +175,12 @@ static efi_status_t efi_open_device_path(efi_file_protocol_t **volume,
return status;
}
#ifndef CONFIG_CMDLINE
#define CONFIG_CMDLINE
#endif
static const efi_char16_t builtin_cmdline[] = L"" CONFIG_CMDLINE;
/*
* Check the cmdline for a LILO-style file= arguments.
*
@ -189,6 +195,8 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
unsigned long *load_addr,
unsigned long *load_size)
{
const bool ignore_load_options = IS_ENABLED(CONFIG_CMDLINE_OVERRIDE) ||
IS_ENABLED(CONFIG_CMDLINE_FORCE);
const efi_char16_t *cmdline = efi_table_attr(image, load_options);
u32 cmdline_len = efi_table_attr(image, load_options_size);
unsigned long efi_chunk_size = ULONG_MAX;
@ -197,6 +205,7 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
unsigned long alloc_addr;
unsigned long alloc_size;
efi_status_t status;
bool twopass;
int offset;
if (!load_addr || !load_size)
@ -209,6 +218,16 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
efi_chunk_size = EFI_READ_CHUNK_SIZE;
alloc_addr = alloc_size = 0;
if (!ignore_load_options && cmdline_len > 0) {
twopass = IS_ENABLED(CONFIG_CMDLINE_BOOL) ||
IS_ENABLED(CONFIG_CMDLINE_EXTEND);
} else {
do_builtin: cmdline = builtin_cmdline;
cmdline_len = ARRAY_SIZE(builtin_cmdline) - 1;
twopass = false;
}
do {
struct finfo fi;
unsigned long size;
@ -290,6 +309,9 @@ efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
efi_call_proto(volume, close);
} while (offset > 0);
if (twopass)
goto do_builtin;
*load_addr = alloc_addr;
*load_size = alloc_size;

9
drivers/firmware/efi/libstub/tpm.c
View File

@ -57,7 +57,7 @@ static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_loca
struct linux_efi_tpm_eventlog *log_tbl = NULL;
unsigned long first_entry_addr, last_entry_addr;
size_t log_size, last_entry_size;
int final_events_size = 0;
u32 final_events_size = 0;
first_entry_addr = (unsigned long) log_location;
@ -110,9 +110,9 @@ static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_loca
*/
if (final_events_table && final_events_table->nr_events) {
struct tcg_pcr_event2_head *header;
int offset;
u32 offset;
void *data;
int event_size;
u32 event_size;
int i = final_events_table->nr_events;
data = (void *)final_events_table;
@ -124,6 +124,9 @@ static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_loca
event_size = __calc_tpm2_event_size(header,
(void *)(long)log_location,
false);
/* If calc fails this is a malformed log */
if (!event_size)
break;
final_events_size += event_size;
i--;
}

3
drivers/firmware/efi/libstub/x86-stub.c
View File

@ -537,7 +537,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
struct boot_params *boot_params;
struct setup_header *hdr;
int options_size = 0;
efi_status_t status;
unsigned long alloc;
char *cmdline_ptr;
@ -569,7 +568,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
hdr->initrd_addr_max = INT_MAX;
/* Convert unicode cmdline to ascii */
cmdline_ptr = efi_convert_cmdline(image, &options_size);
cmdline_ptr = efi_convert_cmdline(image);
if (!cmdline_ptr) {
efi_free(PARAM_SIZE, alloc);
efi_exit(handle, EFI_OUT_OF_RESOURCES);

18
drivers/firmware/efi/memattr.c
View File

@ -22,6 +22,7 @@ unsigned long __ro_after_init efi_mem_attr_table = EFI_INVALID_TABLE_ADDR;
int __init efi_memattr_init(void)
{
efi_memory_attributes_table_t *tbl;
unsigned long size;
if (efi_mem_attr_table == EFI_INVALID_TABLE_ADDR)
return 0;
@ -39,7 +40,22 @@ int __init efi_memattr_init(void)
goto unmap;
}
tbl_size = sizeof(*tbl) + tbl->num_entries * tbl->desc_size;
/*
* Sanity check: the Memory Attributes Table contains up to 3 entries
* for each entry of type EfiRuntimeServicesCode in the EFI memory map.
* So if the size of the table exceeds 3x the size of the entire EFI
* memory map, there is clearly something wrong, and the table should
* just be ignored altogether.
*/
size = tbl->num_entries * tbl->desc_size;
if (size > 3 * efi.memmap.nr_map * efi.memmap.desc_size) {
pr_warn(FW_BUG "Corrupted EFI Memory Attributes Table detected! (version == %u, desc_size == %u, num_entries == %u)\n",
tbl->version, tbl->desc_size, tbl->num_entries);
goto unmap;
}
tbl_size = sizeof(*tbl) + size;
memblock_reserve(efi_mem_attr_table, tbl_size);
set_bit(EFI_MEM_ATTR, &efi.flags);

26
drivers/firmware/efi/tpm.c
View File

@ -19,7 +19,7 @@ EXPORT_SYMBOL(efi_tpm_final_log_size);
static int __init tpm2_calc_event_log_size(void *data, int count, void *size_info)
{
struct tcg_pcr_event2_head *header;
int event_size, size = 0;
u32 event_size, size = 0;
while (count > 0) {
header = data + size;
@ -40,7 +40,8 @@ int __init efi_tpm_eventlog_init(void)
{
struct linux_efi_tpm_eventlog *log_tbl;
struct efi_tcg2_final_events_table *final_tbl;
int tbl_size;
unsigned int tbl_size;
int final_tbl_size;
int ret = 0;
if (efi.tpm_log == EFI_INVALID_TABLE_ADDR) {
@ -60,7 +61,12 @@ int __init efi_tpm_eventlog_init(void)
}
tbl_size = sizeof(*log_tbl) + log_tbl->size;
memblock_reserve(efi.tpm_log, tbl_size);
if (memblock_reserve(efi.tpm_log, tbl_size)) {
pr_err("TPM Event Log memblock reserve fails (0x%lx, 0x%x)\n",
efi.tpm_log, tbl_size);
ret = -ENOMEM;
goto out;
}
if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR) {
pr_info("TPM Final Events table not present\n");
@ -80,26 +86,26 @@ int __init efi_tpm_eventlog_init(void)
goto out;
}
tbl_size = 0;
final_tbl_size = 0;
if (final_tbl->nr_events != 0) {
void *events = (void *)efi.tpm_final_log
+ sizeof(final_tbl->version)
+ sizeof(final_tbl->nr_events);
tbl_size = tpm2_calc_event_log_size(events,
final_tbl->nr_events,
log_tbl->log);
final_tbl_size = tpm2_calc_event_log_size(events,
final_tbl->nr_events,
log_tbl->log);
}
if (tbl_size < 0) {
if (final_tbl_size < 0) {
pr_err(FW_BUG "Failed to parse event in TPM Final Events Log\n");
ret = -EINVAL;
goto out_calc;
}
memblock_reserve(efi.tpm_final_log,
tbl_size + sizeof(*final_tbl));
efi_tpm_final_log_size = tbl_size;
final_tbl_size + sizeof(*final_tbl));
efi_tpm_final_log_size = final_tbl_size;
out_calc:
early_memunmap(final_tbl, sizeof(*final_tbl));

17
include/linux/efi.h
View File

@ -379,7 +379,6 @@ void efi_native_runtime_setup(void);
#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
@ -580,15 +579,6 @@ struct efi_mem_range {
u64 attribute;
};
typedef struct {
u32 version;
u32 length;
u64 memory_protection_attribute;
} efi_properties_table_t;
#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
typedef struct {
u16 version;
u16 length;
@ -871,10 +861,9 @@ static inline int efi_range_is_wc(unsigned long start, unsigned long len)
#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
#define EFI_ARCH_1 7 /* First arch-specific bit */
#define EFI_DBG 8 /* Print additional debug info at runtime */
#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
#define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
#define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */
#define EFI_PRESERVE_BS_REGIONS 12 /* Are EFI boot-services memory segments available? */
#define EFI_MEM_ATTR 9 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
#define EFI_MEM_NO_SOFT_RESERVE 10 /* Is the kernel configured to ignore soft reservations? */
#define EFI_PRESERVE_BS_REGIONS 11 /* Are EFI boot-services memory segments available? */
#ifdef CONFIG_EFI
/*

2
include/linux/tpm_eventlog.h
View File

@ -157,7 +157,7 @@ struct tcg_algorithm_info {
* Return: size of the event on success, 0 on failure
*/
static __always_inline int __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
static __always_inline u32 __calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
struct tcg_pcr_event *event_header,
bool do_mapping)
{