This bug was fixed in the package linux - 6.11.0-8.8
---------------
linux (6.11.0-8.8) oracular; urgency=medium
* oracular/linux: 6.11.0-8.8 -proposed tracker (LP: #2080825)
* Packaging resync (LP: #1786013)
- [Packaging] update variants
- [Packaging] debian.master/dkms-versions -- update from kernel-versions
(main/d2024.08.12)
* [SRU] Disable CONFIG_TCG_TPM2_HMAC to avoid performance loss after v6.10
(LP: #2080322)
- [Config] disable CONFIG_TCG_TPM2_HMAC by default
* Integrated Sensor Hub (ISH) support for Intel Lunar Lake platform
(LP: #2071698)
- Documentation: hid: intel-ish-hid: Add vendor custom firmware loading
- HID: intel-ish-hid: Use CPU generation string in driver_data
- hid: intel-ish-hid: Add support for vendor customized firmware loading
* Miscellaneous Ubuntu changes
- [Packaging] Purge obsolete upstart files
- [Packaging] tools/hv: don't build/install hv_fcopy_uio_daemon on arm64
- [Config] Update toolchain versions
- SAUCE: rust: Fix rustc source path for the new rustc packaging
- [Packaging] Don't force bindgen version
- [Config] Re-enable rust support for amd64
-- Timo Aaltonen <timo.aalto...@canonical.com> Mon, 16 Sep 2024
15:04:18 +0300
** Changed in: linux (Ubuntu Oracular)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2080322
Title:
[SRU] Disable CONFIG_TCG_TPM2_HMAC to avoid performance loss after
v6.10
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Invalid
Status in linux-oem-6.11 source package in Noble:
In Progress
Status in linux source package in Oracular:
Fix Released
Status in linux-oem-6.11 source package in Oracular:
Invalid
Bug description:
[Impact]
significant delays at bootup, the bootup time is 7 sec when this feature is
disabled,
but 20 sec when it's enabled.
[Fix]
v6.10-rc1 introduce encryption overhead to all kernel to TPM transactions,
Disable it by default until there is a real fix.
[Test]
Tested on hardware, bootup is 7 sec as 6.8 noble kernel.
[Where problems could occur]
It may less security or break TPM.
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