From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-pci@vger.kernel.org, Sinan Kaya <okaya@kernel.org>,
"Zilberman, Zeev" <zeev@amazon.com>,
linux-arm-kernel@lists.infradead.org, "Saidi,
Ali" <alisaidi@amazon.com>
Subject: Re: [PATCH/RESEND] arm64: acpi/pci: invoke _DSM whether to preserve firmware PCI setup
Date: Thu, 13 Jun 2019 09:58:24 +1000 [thread overview]
Message-ID: <4ba4cc02ef0a30705fded5f2a66965c1f0f1b8ab.camel@kernel.crashing.org> (raw)
In-Reply-To: <20190612132730.GB13533@google.com>
On Wed, 2019-06-12 at 08:27 -0500, Bjorn Helgaas wrote:
> Speaking of which, *this* patch looks like FUD because it essentially
> says "Linux shouldn't change the PCI configuration on this system" but
> it offers no explanation of *why* the config needs to be preserved. I
> would really like some note like "run-time firmware depends on the
> addresses of device X".
BTW. the patch doesn't say that. ACPI tells us that :-)
Cheers
Ben.
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next prev parent reply other threads:[~2019-06-12 23:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-03 23:41 [RFC] ARM64 PCI resource survey issue(s) Benjamin Herrenschmidt
2019-06-04 1:49 ` Bjorn Helgaas
2019-06-04 3:32 ` Benjamin Herrenschmidt
2019-06-04 3:37 ` Benjamin Herrenschmidt
2019-06-04 6:56 ` Benjamin Herrenschmidt
2019-06-04 12:49 ` Bjorn Helgaas
2019-06-04 20:41 ` Benjamin Herrenschmidt
2019-06-06 9:00 ` [PATCH/RESEND] arm64: acpi/pci: invoke _DSM whether to preserve firmware PCI setup Benjamin Herrenschmidt
2019-06-06 9:13 ` Ard Biesheuvel
2019-06-06 10:55 ` Benjamin Herrenschmidt
2019-06-11 14:31 ` Lorenzo Pieralisi
2019-06-11 22:09 ` Benjamin Herrenschmidt
2019-06-11 22:34 ` Ard Biesheuvel
2019-06-11 22:40 ` Benjamin Herrenschmidt
2019-06-12 10:21 ` Lorenzo Pieralisi
2019-06-12 22:05 ` Benjamin Herrenschmidt
2019-06-11 14:58 ` Lorenzo Pieralisi
2019-06-11 22:19 ` Benjamin Herrenschmidt
2019-06-12 10:08 ` Lorenzo Pieralisi
2019-06-12 10:58 ` Benjamin Herrenschmidt
2019-06-11 23:39 ` Bjorn Helgaas
2019-06-12 0:06 ` Benjamin Herrenschmidt
2019-06-12 13:27 ` Bjorn Helgaas
2019-06-12 21:46 ` Benjamin Herrenschmidt
2019-06-12 23:58 ` Benjamin Herrenschmidt [this message]
2019-06-10 10:11 ` [RFC] ARM64 PCI resource survey issue(s) Lorenzo Pieralisi
2019-06-11 5:46 ` Benjamin Herrenschmidt
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