From: David Laight <David.Laight@ACULAB.COM>
To: 'Maximilian Luz' <luzmaximilian@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Sachi King <nakato@nakato.io>,
"x86@kernel.org" <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: RE: [PATCH] x86/i8259: Work around buggy legacy PIC
Date: Thu, 13 May 2021 08:10:54 +0000 [thread overview]
Message-ID: <9b70d8113c084848b8d9293c4428d71b@AcuMS.aculab.com> (raw)
In-Reply-To: <20210512210459.1983026-1-luzmaximilian@gmail.com>
From: Maximilian Luz
> Sent: 12 May 2021 22:05
>
> The legacy PIC on the AMD variant of the Microsoft Surface Laptop 4 has
> some problems on boot. For some reason it consistently does not respond
> on the first try, requiring a couple more tries before it finally
> responds.
That seems very strange, something else must be going on that causes the grief.
The 8259 will be built into to the one of the cpu support chips.
I can't imagine that requires anything special.
It's not as though you have a real 8259 - which even a 286 can
break the inter-cycle recovery on (with the circuit from the
application note).
David
-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2021-05-13 8:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 21:04 [PATCH] x86/i8259: Work around buggy legacy PIC Maximilian Luz
2021-05-13 8:10 ` David Laight [this message]
2021-05-13 10:11 ` Maximilian Luz
2021-05-13 10:36 ` David Laight
2021-05-14 13:01 ` Thomas Gleixner
2021-05-14 13:13 ` David Laight
2021-05-14 16:19 ` Ingo Molnar
2021-05-14 19:41 ` Sachi King
2021-05-14 10:51 ` David Laight
2021-05-14 11:58 ` Maximilian Luz
2021-05-14 17:32 ` Thomas Gleixner
2021-05-14 17:35 ` H. Peter Anvin
2021-05-14 22:47 ` Maximilian Luz
2021-05-17 18:40 ` Thomas Gleixner
2021-05-17 19:25 ` Maximilian Luz
2021-05-17 23:27 ` Thomas Gleixner
2021-05-18 8:28 ` Andy Shevchenko
2021-05-18 19:58 ` Sachi King
2021-05-18 15:45 ` Thomas Gleixner
2021-05-14 13:44 ` Thomas Gleixner
2021-05-14 16:12 ` David Laight
2021-05-14 17:28 ` H. Peter Anvin
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