Re: [PATCH v5 1/2] treewide: Add a flag to detect the Apple T2 chip

Borislav Petkov <[email protected]> Mon, 27 Jul 2026 17:58:47 -0700

Newsgroups	org.kernel.vger.keyrings,org.kernel.vger.linux-integrity,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci,org.kernel.vger.linux-security-module,org.kernel.vger.linux-usb,org.kernel.vger.platform-driver-x86
Message-ID	<20260728005847.GBamf-x27vgqj7WG7e@fat_crate.local>

On Mon, Jul 27, 2026 at 05:18:02PM -0400, Atharva Tiwari wrote:
> Add a flag to detect Apple T2 chips on Intel Macs.
> Cache the result to avoid repeated checks. That will
> be used in upcoming patches.
> 
> Signed-off-by: Atharva Tiwari <[email protected]>
> ---
>  arch/x86/kernel/quirks.c                      | 37 ++++++++++++++++++
>  include/linux/platform_data/x86/apple.h       |  5 +++
>  .../platform_certs/keyring_handler.h          |  8 ----
>  security/integrity/platform_certs/load_uefi.c | 38 ++++---------------
>  4 files changed, 50 insertions(+), 38 deletions(-)
> 
> diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c
> index a92f18db9610..6651e5d4d106 100644
> --- a/arch/x86/kernel/quirks.c
> +++ b/arch/x86/kernel/quirks.c
> @@ -664,8 +664,45 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2083, quirk_intel_purley_xeon_ras
>  bool x86_apple_machine;
>  EXPORT_SYMBOL(x86_apple_machine);
>  
> +bool has_apple_t2_chip;
> +EXPORT_SYMBOL(has_apple_t2_chip);

I'm guessing this is parrotting the non-GPL export of x86_apple_machine from

  630b3aff8a51 ("treewide: Consolidate Apple DMI checks")

Lemme add those folks and ask why aren't those exports GPL only?

Thx.

-- 
Regards/Gruss,
    Boris.

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