Merge tag 'efi-urgent-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Borislav Petkov:
"Forwarded from Ard Biesheuvel through the tip tree. Ard will send
stuff directly in the near future.
Low priority fixes but fixes nonetheless:
- update stub diagnostic print that is no longer accurate
- avoid statically allocated buffer for CPER error record decoding
- avoid sleeping on the efi_runtime semaphore when calling the
ResetSystem EFI runtime service"
* tag 'efi-urgent-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: Change down_interruptible() in virt_efi_reset_system() to down_trylock()
efi/cper: use stack buffer for error record decoding
efi/libstub: Simplify "Exiting bootservices" message
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 73bdbd2..6ec8ede 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -25,8 +25,6 @@
#include <acpi/ghes.h>
#include <ras/ras_event.h>
-static char rcd_decode_str[CPER_REC_LEN];
-
/*
* CPER record ID need to be unique even after reboot, because record
* ID is used as index for ERST storage, while CPER records from
@@ -312,6 +310,7 @@
struct cper_mem_err_compact *cmem)
{
const char *ret = trace_seq_buffer_ptr(p);
+ char rcd_decode_str[CPER_REC_LEN];
if (cper_mem_err_location(cmem, rcd_decode_str))
trace_seq_printf(p, "%s", rcd_decode_str);
@@ -326,6 +325,7 @@
int len)
{
struct cper_mem_err_compact cmem;
+ char rcd_decode_str[CPER_REC_LEN];
/* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
if (len == sizeof(struct cper_sec_mem_err_old) &&
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 365c3a4..fe567be 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -271,7 +271,7 @@
return status;
}
- efi_info("Exiting boot services and installing virtual address map...\n");
+ efi_info("Exiting boot services...\n");
map.map = &memory_map;
status = efi_allocate_pages(MAX_FDT_SIZE, new_fdt_addr, ULONG_MAX);
diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c
index 1410bea..f3e54f6 100644
--- a/drivers/firmware/efi/runtime-wrappers.c
+++ b/drivers/firmware/efi/runtime-wrappers.c
@@ -414,7 +414,7 @@
unsigned long data_size,
efi_char16_t *data)
{
- if (down_interruptible(&efi_runtime_lock)) {
+ if (down_trylock(&efi_runtime_lock)) {
pr_warn("failed to invoke the reset_system() runtime service:\n"
"could not get exclusive access to the firmware\n");
return;
