From: "Luck, Tony" <tony.luck@intel.com>
To: "Williams, Dan J" <dan.j.williams@intel.com>,
"chu, jane" <jane.chu@oracle.com>, "bp@alien8.de" <bp@alien8.de>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"x86@kernel.org" <x86@kernel.org>,
"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hch@lst.de" <hch@lst.de>,
"nvdimm@lists.linux.dev" <nvdimm@lists.linux.dev>
Subject: RE: [PATCH v3] x86/mce: retrieve poison range from hardware
Date: Mon, 18 Jul 2022 19:22:24 +0000 [thread overview]
Message-ID: <797a2b64ed0949b6905b3c3e8f049a23@intel.com> (raw)
In-Reply-To: <62d5b13b2cf1a_9291929433@dwillia2-xfh.jf.intel.com.notmuch>
> It appears the kernel is trusting that ->physical_addr_mask is non-zero
> in other paths. So this is at least equally broken in the presence of a
> broken BIOS. The impact is potentially larger though with this change,
> so it might be a good follow-on patch to make sure that
> ->physical_addr_mask gets fixed up to a minimum mask value.
Agreed. Separate patch to sanitize early, so other kernel code can just use it.
-Tony
next prev parent reply other threads:[~2022-07-18 19:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-17 23:48 [PATCH v3] x86/mce: retrieve poison range from hardware Jane Chu
2022-07-18 16:19 ` Luck, Tony
2022-07-18 19:15 ` Dan Williams
2022-07-18 19:22 ` Luck, Tony [this message]
2022-07-18 21:11 ` Jane Chu
2022-07-18 21:37 ` Luck, Tony
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