unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
1
Fork 0
Code Pull requests 5 Wiki Activity

EFI updates for v6.12

Browse source 
- Prevent kexec from crashing on a corrupted TPM log by using a memory
   type that is reserved by default
 - Log correctable errors reported via CPER
 - A couple of cosmetic fixes
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQQQm/3uucuRGn1Dmh0wbglWLn0tXAUCZvVoMgAKCRAwbglWLn0t
 XLMLAP4gov3sDh6kIgDe5dxNghVl1EZURgyt/KViRDNyxZmAQQD+I1bgkiczO8bh
 +S6AXE4rCZNLE/3JtxJGtfSI0et51AQ=
 =2NGd
 -----END PGP SIGNATURE-----

Merge tag 'efi-next-for-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI updates from Ard Biesheuvel:
 "Not a lot happening in EFI land this cycle.

   - Prevent kexec from crashing on a corrupted TPM log by using a
     memory type that is reserved by default

   - Log correctable errors reported via CPER

   - A couple of cosmetic fixes"

* tag 'efi-next-for-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: Remove redundant null pointer checks in efi_debugfs_init()
  efistub/tpm: Use ACPI reclaim memory for event log to avoid corruption
  efi/cper: Print correctable AER information
  efi: Remove unused declaration efi_initialize_iomem_resources()
This commit is contained in:
Linus Torvalds 2024-09-26 11:44:55 -07:00
commit 1abcb8c993
4 changed files with 10 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/firmware/efi/cper.c
View file

@ -434,12 +434,17 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
"%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
pfx, pcie->bridge.secondary_status, pcie->bridge.control);
/* Fatal errors call __ghes_panic() before AER handler prints this */
if ((pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) &&
(gdata->error_severity & CPER_SEV_FATAL)) {
/*
* Print all valid AER info. Record may be from BERT (boot-time) or GHES (run-time).
*
* Fatal errors call __ghes_panic() before AER handler prints this.
*/
if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) {
struct aer_capability_regs *aer;
aer = (struct aer_capability_regs *)pcie->aer_info;
printk("%saer_cor_status: 0x%08x, aer_cor_mask: 0x%08x\n",
pfx, aer->cor_status, aer->cor_mask);
printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n",
pfx, aer->uncor_status, aer->uncor_mask);
printk("%saer_uncor_severity: 0x%08x\n",

2
drivers/firmware/efi/efi.c
View file

@ -349,7 +349,7 @@ static void __init efi_debugfs_init(void)
int i = 0;
efi_debugfs = debugfs_create_dir("efi", NULL);
if (IS_ERR_OR_NULL(efi_debugfs))
if (IS_ERR(efi_debugfs))
return;
for_each_efi_memory_desc(md) {

2
drivers/firmware/efi/libstub/tpm.c
View file

@ -96,7 +96,7 @@ static void efi_retrieve_tcg2_eventlog(int version, efi_physical_addr_t log_loca
}
/* Allocate space for the logs and copy them. */
status = efi_bs_call(allocate_pool, EFI_LOADER_DATA,
status = efi_bs_call(allocate_pool, EFI_ACPI_RECLAIM_MEMORY,
sizeof(*log_tbl) + log_size, (void **)&log_tbl);
if (status != EFI_SUCCESS) {

2
include/linux/efi.h
View file

@ -764,8 +764,6 @@ extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
extern int __efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
extern void efi_mem_reserve(phys_addr_t addr, u64 size);
extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size);
extern void efi_initialize_iomem_resources(struct resource *code_resource,
struct resource *data_resource, struct resource *bss_resource);
extern u64 efi_get_fdt_params(struct efi_memory_map_data *data);
extern struct kobject *efi_kobj;