linux-kernel - Re: [PATCH v8 1/8] tpm: tpm_tis: Make implementation of read16, read32 and write32 optional

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 14 May 2020 14:26:14 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     amirmizi6@...il.com, Eyal.Cohen@...oton.com,
        oshrialkoby85@...il.com, alexander.steffen@...ineon.com,
        robh+dt@...nel.org, benoit.houyere@...com, mark.rutland@....com,
        peterhuewe@....de, christophe-h.richard@...com, jgg@...pe.ca,
        arnd@...db.de, gregkh@...uxfoundation.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-integrity@...r.kernel.org, oshri.alkoby@...oton.com,
        tmaimon77@...il.com, gcwilson@...ibm.com, kgoldman@...ibm.com,
        Dan.Morav@...oton.com, oren.tanami@...oton.com,
        shmulik.hager@...oton.com, amir.mizinski@...oton.com
Subject: Re: [PATCH v8 1/8] tpm: tpm_tis: Make implementation of read16,
 read32 and write32 optional

On Tue, 2020-05-12 at 17:14 +0300, amirmizi6@...il.com wrote:
> From: Amir Mizinski <amirmizi6@...il.com>
> 
> Only tpm_tis can use memory-mapped I/O, which is truly mapped into
> the kernel's memory space. Therefore, using ioread16/ioread32/iowrite32
> turns into a straightforward pointer dereference.
> Every other driver requires more complicated operations to read more than
> one byte at a time and will just fall back to read_bytes/write_bytes.
> Therefore, move this common code out of tpm_tis_spi and into tpm_tis_core
> so that it is used automatically when low-level drivers do not implement
> the specialized methods.
> 
> Co-developed-by: Alexander Steffen <Alexander.Steffen@...ineon.com>
> Signed-off-by: Alexander Steffen <Alexander.Steffen@...ineon.com>
> Signed-off-by: Amir Mizinski <amirmizi6@...il.com>
> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

OK, so I applied this one:

http://git.infradead.org/users/jjs/linux-tpmdd.git/commit/fa05dc792ea02043f3c21467cb4485a38ac19bdf

I.e. no need to carry this one any more in the series. Sorry that
I haven't done this before (should have).

/Jarkko