linux-kernel - Re: [PATCH v4 01/71] tpm: Switch to new Intel CPU model defines

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Date: Thu, 25 Apr 2024 07:50:05 +0300
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Jarkko Sakkinen" <jarkko@...nel.org>, "Tony Luck"
 <tony.luck@...el.com>, "Borislav Petkov" <bp@...en8.de>, "Peter Huewe"
 <peterhuewe@....de>
Cc: "Jason Gunthorpe" <jgg@...pe.ca>, <linux-integrity@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <patches@...ts.linux.dev>
Subject: Re: [PATCH v4 01/71] tpm: Switch to new Intel CPU model defines

On Thu Apr 25, 2024 at 7:48 AM EEST, Jarkko Sakkinen wrote:
> On Wed Apr 24, 2024 at 9:14 PM EEST, Tony Luck wrote:
> > New CPU #defines encode vendor and family as well as model.
> >
> > Signed-off-by: Tony Luck <tony.luck@...el.com>
> > Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
> > ---
> >  drivers/char/tpm/tpm.h          | 2 +-
> >  drivers/char/tpm/tpm_tis_core.h | 2 +-
> >  2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
> > index 61445f1dc46d..7b38ce007bdc 100644
> > --- a/drivers/char/tpm/tpm.h
> > +++ b/drivers/char/tpm/tpm.h
> > @@ -28,7 +28,7 @@
> >  #include <linux/tpm_eventlog.h>
> >  
> >  #ifdef CONFIG_X86
> > -#include <asm/intel-family.h>
> > +#include <asm/cpu_device_id.h>
> >  #endif
> >  
> >  #define TPM_MINOR		224	/* officially assigned */
> > diff --git a/drivers/char/tpm/tpm_tis_core.h b/drivers/char/tpm/tpm_tis_core.h
> > index 13e99cf65efe..c940fd18988e 100644
> > --- a/drivers/char/tpm/tpm_tis_core.h
> > +++ b/drivers/char/tpm/tpm_tis_core.h
> > @@ -210,7 +210,7 @@ static inline int tpm_tis_verify_crc(struct tpm_tis_data *data, size_t len,
> >  static inline bool is_bsw(void)
> >  {
> >  #ifdef CONFIG_X86
> > -	return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0);
> > +	return ((boot_cpu_data.x86_vfm == INTEL_ATOM_AIRMONT) ? 1 : 0);

Umh I guess one could complain about extra parentheses ;-)

Not sure if I care, if no other updates needed, probably don't.

> >  #else
> >  	return false;
> >  #endif
>
> +1
>
> BR, Jarkko

BR, Jarkko