* [PATCH] efi: Make EFI_VARS_PSTORE depend on EFIVAR_FS
@ 2026-06-25 17:12 Theodore Tucker
2026-07-23 6:39 ` Ard Biesheuvel
0 siblings, 1 reply; 2+ messages in thread
From: Theodore Tucker @ 2026-06-25 17:12 UTC (permalink / raw)
To: linux-kernel
Cc: linux-efi, gpiccoli, tony.luck, kees, ilias.apalodimas, ardb,
Theodore Tucker
The efivars backend to pstore will not register if the efivarfs is
not available. The efivars sysfs interface was removed in Linux 6.0,
meaning efivarfs is now the only way pstore can write into EFI
variables. Making the dependency on the efivarfs explicit removes
a stumbling block when configuring a kernel with pstore.
Signed-off-by: Theodore Tucker <theodore@tti0.net>
---
drivers/firmware/efi/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 29e0729299f5..8dfd21e7a8e4 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -9,7 +9,7 @@ config EFI_ESRT
config EFI_VARS_PSTORE
tristate "Register efivars backend for pstore"
- depends on PSTORE
+ depends on PSTORE && EFIVAR_FS
select UCS2_STRING
default y
help
--
2.47.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] efi: Make EFI_VARS_PSTORE depend on EFIVAR_FS
2026-06-25 17:12 [PATCH] efi: Make EFI_VARS_PSTORE depend on EFIVAR_FS Theodore Tucker
@ 2026-07-23 6:39 ` Ard Biesheuvel
0 siblings, 0 replies; 2+ messages in thread
From: Ard Biesheuvel @ 2026-07-23 6:39 UTC (permalink / raw)
To: Theodore Tucker, linux-kernel
Cc: linux-efi, Guilherme G. Piccoli, Tony Luck, Kees Cook,
Ilias Apalodimas
On Thu, 25 Jun 2026, at 19:12, Theodore Tucker wrote:
> The efivars backend to pstore will not register if the efivarfs is
> not available. The efivars sysfs interface was removed in Linux 6.0,
> meaning efivarfs is now the only way pstore can write into EFI
> variables. Making the dependency on the efivarfs explicit removes
> a stumbling block when configuring a kernel with pstore.
>
> Signed-off-by: Theodore Tucker <theodore@tti0.net>
> ---
> drivers/firmware/efi/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
Applied, thanks.
> diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
> index 29e0729299f5..8dfd21e7a8e4 100644
> --- a/drivers/firmware/efi/Kconfig
> +++ b/drivers/firmware/efi/Kconfig
> @@ -9,7 +9,7 @@ config EFI_ESRT
>
> config EFI_VARS_PSTORE
> tristate "Register efivars backend for pstore"
> - depends on PSTORE
> + depends on PSTORE && EFIVAR_FS
> select UCS2_STRING
> default y
> help
> --
> 2.47.3
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-06-25 17:12 [PATCH] efi: Make EFI_VARS_PSTORE depend on EFIVAR_FS Theodore Tucker
2026-07-23 6:39 ` Ard Biesheuvel
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