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Date:      Fri, 5 Feb 2021 08:38:39 +0200
From:      Toomas Soome <tsoome@me.com>
To:        Warner Losh <imp@bsdimp.com>
Cc:        Toomas Soome <tsoome@freebsd.org>, src-committers <src-committers@freebsd.org>, dev-commits-src-all@freebsd.org, dev-commits-src-branches@freebsd.org
Subject:   Re: git: 0c839497c174 - stable/13 - loader.efi: There are systems without ConOut, also use ConOutDev
Message-ID:  <CF59D855-228A-4BC1-AC4B-0C54417EF3BF@me.com>
In-Reply-To: <CANCZdfqXU7Syo4wvxJ17Gt%2B0E2Kw8yOU_nrTNA%2Beu=z-ZwTKow@mail.gmail.com>
References:  <CANCZdfqXU7Syo4wvxJ17Gt%2B0E2Kw8yOU_nrTNA%2Beu=z-ZwTKow@mail.gmail.com>

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> On 5. Feb 2021, at 01:56, Warner Losh <imp@bsdimp.com> wrote:
>=20
> =EF=BB=BF
> And why the instaMFC? Changes are supposed to cook force days before mergi=
ng... I have questions about the wisdom of this change...
>=20
> Warner=20
>=20

Reason is in PR. There is someone with the system without ConOut but ConOutD=
ev is set. Instead of falling back to arbitrary device (which in this case w=
as totally wrong choice), we can try the possible devices list. We do not ch=
ange the ConOut parsing.

If it would appear, there are systems with unusable devices listed in ConOut=
Dev, then we need to think how to handle such case.

Thanks,
Toomas

>> On Thu, Feb 4, 2021, 2:34 PM Toomas Soome <tsoome@freebsd.org> wrote:
>> The branch stable/13 has been updated by tsoome:
>>=20
>> URL: https://cgit.FreeBSD.org/src/commit/?id=3D0c839497c174e961fc71f7d332=
9d05b10ec5525b
>>=20
>> commit 0c839497c174e961fc71f7d3329d05b10ec5525b
>> Author:     Toomas Soome <tsoome@FreeBSD.org>
>> AuthorDate: 2021-02-04 20:49:02 +0000
>> Commit:     Toomas Soome <tsoome@FreeBSD.org>
>> CommitDate: 2021-02-04 21:33:15 +0000
>>=20
>>     loader.efi: There are systems without ConOut, also use ConOutDev
>>=20
>>     Conout does contian the default output device name.
>>     ConOutDev does contain all possible output device names, so we can
>>     use it as fallback, when there is no ConOut.
>>=20
>>     PR: 253253
>>=20
>>     (cherry picked from commit 2bd4ff2d8911009283e4e615ca4aad35a845f48b)
>> ---
>>  stand/efi/loader/main.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>=20
>> diff --git a/stand/efi/loader/main.c b/stand/efi/loader/main.c
>> index ca41cd4a2610..32b278950745 100644
>> --- a/stand/efi/loader/main.c
>> +++ b/stand/efi/loader/main.c
>> @@ -735,6 +735,8 @@ parse_uefi_con_out(void)
>>         how =3D 0;
>>         sz =3D sizeof(buf);
>>         rv =3D efi_global_getenv("ConOut", buf, &sz);
>> +       if (rv !=3D EFI_SUCCESS)
>> +               rv =3D efi_global_getenv("ConOutDev", buf, &sz);
>>         if (rv !=3D EFI_SUCCESS) {
>>                 /* If we don't have any ConOut default to serial */
>>                 how =3D RB_SERIAL;



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