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From: Ard Biesheuvel <ardb@kernel.org>
To: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Joe Perches <joe@perches.com>,
	linux-efi <linux-efi@vger.kernel.org>, X86 ML <x86@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 03/10] efi/x86: Use pr_efi_err for error messages
Date: Thu, 30 Apr 2020 17:14:09 +0200
Message-ID: <CAMj1kXGCetKOZ86JmTbPUL9koq7=n8fRcWtctf7Xzi5mWaP2Bg@mail.gmail.com> (raw)
In-Reply-To: <20200429222057.GA1645040@rani.riverdale.lan>

On Thu, 30 Apr 2020 at 00:21, Arvind Sankar <nivedita@alum.mit.edu> wrote:
>
> On Wed, Apr 29, 2020 at 11:55:04PM +0200, Ard Biesheuvel wrote:
> > On Wed, 29 Apr 2020 at 23:53, Joe Perches <joe@perches.com> wrote:
> > >
> > > On Wed, 2020-04-29 at 17:43 -0400, Arvind Sankar wrote:
> > > > On Wed, Apr 29, 2020 at 08:49:21PM +0200, Ard Biesheuvel wrote:
> > > > > On Wed, 29 Apr 2020 at 20:47, Joe Perches <joe@perches.com> wrote:
> > > > > > On Wed, 2020-04-29 at 13:41 -0400, Arvind Sankar wrote:
> > > > > > > Use pr_efi_err instead of bare efi_printk for error messages.
> > > > > >
> > > > > > Perhaps it'd be better to rename pr_efi_err to eri_err
> > > > > > so it's clearer it's a typical efi_ logging function.
> > > > > >
> > > > > > $ git grep -w --name-only pr_efi_err | \
> > > > > >   xargs sed -i 's/\bpr_efi_err\b/efi_err/g'
> > > > > >
> > > > >
> > > > > Yeah, pr_efi_err() is probably not the best name
> > > >
> > > > Should I rename pr_efi/pr_efi_err to, say, efi_pr_info/efi_pr_error?
> > >
> > > Perhaps not use pr_ in the name at all.
> > >
> > > I suggest:
> > >
> > > pr_efi          -> efi_info (or efi_debug or efi_dbg)
> > >                    (it is guarded by an efi_quiet flag, default: on)
> > > pr_efi_err      -> efi_err
> > >
> >
> > Agreed. Shorter is better if there is no risk of confusion..
>
> Ok, I'll use efi_info/efi_err. We could add debugging output as
> efi_debug later, enabled if efi=debug is specified.
>
> While we're here: most of the existing cases of pr_efi look like notice
> or info level, except maybe these two, which probably should be at least
> warnings?
>
> drivers/firmware/efi/libstub/arm64-stub.c
> 62: pr_efi("EFI_RNG_PROTOCOL unavailable, no randomness supplied\n");
>

This should not be a warning. KASLR is enabled by default by the
distros, and many systems don't implement this protocol at all.

> drivers/firmware/efi/libstub/efi-stub.c
> 254: pr_efi("Ignoring DTB from command line.\n");

That could be upgraded to an error.

  reply index

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-29 17:41 [PATCH 00/10] efi: some cleanups/refactoring for efi/next Arvind Sankar
2020-04-29 17:41 ` [PATCH 01/10] efi/x86: Use correct size for boot_params Arvind Sankar
2020-04-29 17:41 ` [PATCH 02/10] efi: Add a helper function to split 64-bit values Arvind Sankar
2020-04-29 23:51   ` kbuild test robot
2020-04-29 17:41 ` [PATCH 02/10] efi/libstub: " Arvind Sankar
2020-04-29 17:41 ` [PATCH 03/10] efi/x86: Use pr_efi_err for error messages Arvind Sankar
2020-04-29 18:47   ` Joe Perches
2020-04-29 18:49     ` Ard Biesheuvel
2020-04-29 18:57       ` Joe Perches
2020-04-29 18:59         ` Ard Biesheuvel
2020-04-29 19:47           ` Joe Perches
2020-04-29 19:48             ` Ard Biesheuvel
2020-04-29 21:43       ` Arvind Sankar
2020-04-29 21:45         ` Ard Biesheuvel
2020-04-29 21:51           ` Arvind Sankar
2020-04-29 21:53         ` Joe Perches
2020-04-29 21:55           ` Ard Biesheuvel
2020-04-29 22:20             ` Arvind Sankar
2020-04-30 15:14               ` Ard Biesheuvel [this message]
2020-04-29 17:41 ` [PATCH 04/10] efi/gop: " Arvind Sankar
2020-04-29 17:41 ` [PATCH 05/10] efi/tpm: " Arvind Sankar
2020-04-29 17:41 ` [PATCH 06/10] efi/x86: Move command-line initrd loading to efi_main Arvind Sankar
2020-04-29 17:41 ` [PATCH 07/10] efi/libstub: Unify initrd loading across architectures Arvind Sankar
2020-04-29 17:41 ` [PATCH 08/10] efi/x86: Drop soft_limit for x86 initrd loading Arvind Sankar
2020-04-29 19:05   ` Ard Biesheuvel
2020-04-29 21:33     ` Arvind Sankar
2020-04-29 17:41 ` [PATCH 09/10] efi/x86: Support builtin command line Arvind Sankar
2020-04-29 19:07   ` Ard Biesheuvel
2020-04-29 21:39     ` Arvind Sankar
2020-04-29 21:40       ` Ard Biesheuvel
2020-04-29 21:48         ` Arvind Sankar
2020-04-29 21:51           ` Ard Biesheuvel
2020-04-29 17:41 ` [PATCH 10/10] efi/libstub: Check return value of efi_parse_options Arvind Sankar
2020-04-30  4:31   ` kbuild test robot
2020-04-30 18:28 ` [PATCH v2 00/11] efi: some cleanups/refactoring for efi/next Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 01/11] efi/x86: Use correct size for boot_params Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 02/11] efi/libstub: Add a helper function to split 64-bit values Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 03/11] efi/libstub: Move pr_efi/pr_efi_err into efi namespace Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 04/11] efi/x86: Use efi_err for error messages Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 05/11] efi/gop: " Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 06/11] efi/tpm: " Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 07/11] efi/libstub: Upgrade ignored dtb= argument message to error Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 08/11] efi/x86: Move command-line initrd loading to efi_main Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 09/11] efi/libstub: Unify initrd loading across architectures Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 10/11] efi/x86: Support builtin command line Arvind Sankar
2020-04-30 18:28   ` [PATCH v2 11/11] efi/libstub: Check return value of efi_parse_options Arvind Sankar
2020-04-30 19:12   ` [PATCH 1/2] efi/libstub: efi_info/efi_err message neatening Joe Perches
2020-04-30 19:12     ` [PATCH 2/2] efi/libstub: Correct comment typos Joe Perches
2020-04-30 19:30       ` Ard Biesheuvel
2020-05-04 18:29         ` [trivial PATCH] efi/libstub: Reduce efi_printk object size Joe Perches
2020-05-05  7:50           ` Ard Biesheuvel
2020-05-05  8:01             ` Joe Perches
2020-04-30 19:29     ` [PATCH 1/2] efi/libstub: efi_info/efi_err message neatening Ard Biesheuvel
2020-04-30 19:38       ` Joe Perches
2020-04-30 20:40       ` Arvind Sankar
2020-04-30 20:42         ` Ard Biesheuvel
2020-05-04  8:17   ` [PATCH v2 00/11] efi: some cleanups/refactoring for efi/next Ard Biesheuvel

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