This bug was fixed in the package linux-aws - 5.4.0-1029.30
---------------
linux-aws (5.4.0-1029.30) focal; urgency=medium
* focal/linux-aws: 5.4.0-1029.30 -proposed tracker (LP: #1900671)
* CVE-2020-12351 // CVE-2020-12352 // CVE-2020-24490
- [Config] [aws] Disable BlueZ highspeed support
* EFA: add support for 0xefa1 devices (LP: #1896791)
- RDMA/efa: Expose maximum TX doorbell batch
- RDMA/efa: Expose minimum SQ size
- RDMA/efa: User/kernel compatibility handshake mechanism
- RDMA/efa: Add EFA 0xefa1 PCI ID
* aws: enable PCI write-combine for arm64 (LP: #1893817)
- SAUCE: arm64: Enable PCI write-combine resources under sysfs
* AWS: enable FPGA support in amd64 AWS kernels (LP: #1898781)
- [Config] aws: enable FPGA for amd64 also
[ Ubuntu: 5.4.0-52.57 ]
* focal/linux: 5.4.0-52.57 -proposed tracker (LP: #1899920)
* CVE-2020-12351 // CVE-2020-12352 // CVE-2020-24490
- Bluetooth: Disable High Speed by default
- Bluetooth: MGMT: Fix not checking if BT_HS is enabled
- [Config] Disable BlueZ highspeed support
* CVE-2020-12351
- Bluetooth: L2CAP: Fix calling sk_filter on non-socket based channel
* CVE-2020-12352
- Bluetooth: A2MP: Fix not initializing all members
-- Andrea Righi <andrea.ri...@canonical.com> Tue, 20 Oct 2020 11:32:33
+0200
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Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/1893817
Title:
aws: enable PCI write-combine for arm64
Status in linux-aws package in Ubuntu:
Fix Released
Status in linux-aws source package in Bionic:
Fix Released
Status in linux-aws source package in Focal:
Fix Released
Status in linux-aws source package in Groovy:
Fix Released
Bug description:
To improve PCI performance on certain arm64 AWS instance types, enable
arch_can_pci_mmap_wc() via the patch:
From: Clint Sbisa <csb...@amazon.com>
Subject: [PATCH] arm64: Enable PCI write-combine resources under sysfs
https://lore.kernel.org/linux-
pci/20200831151827.pumm2p54fyj7f...@amazon.com/
--------------
[Impact]
* AWS requires PCI-write-combine be enabled for arm64 via this one-
line patch, to effect a significant performance improvement on certain
AWS arm64 instance types.
* After considerable discussion, upstream indicates that this patch
will be accepted into mainline[0] once additional documentation
details get added to the commit description.
* Applying this patch to linux-aws affects only AWS arm64 instance
types.
[Test Case]
* Has been performance-tested by AWS; smoke-tested by me.
[Regression Potential]
* Low.
[0] https://lore.kernel.org/linux-
pci/20200917140116.ga4...@e121166-lin.cambridge.arm.com/
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