ACK: [SRU][PULL][jammy:linux] Patches needed for AmpereOne (arm64)

[Roxana Nicolescu]

On 01/12/2023 01:20, John Cabaj wrote:
> BugLink: https://bugs.launchpad.net/bugs/2044192
>
> [Impact]
>
> * Google requested patches for AmpereOne machine type
>
> [Fix]
>
> * Changes already in Mantic, will be in Jammy 6.5 kernel, targeting Jammy 5.15 GCP and Focal 5.4 GCP for now
> * Also submitting to Jammy 5.15 generic
> * Cherry-picks from upstream
>
> db26f8f2da92 ("clocksource/drivers/arch_arm_timer: Move workaround synchronisation around")
> c1153d52c414 ("clocksource/drivers/arm_arch_timer: Fix masking for high freq counters")
> ec8f7f3342c8 ("clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming")
> 41f8d02a6a55 ("clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface")
> 012f18850452 ("clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations")
> 30aa08da35e0 ("clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code")
> 8b82c4f883a7 ("clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL")
> 72f47a3f0ea4 ("clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue")
> ac9ef4f24cb2 ("clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names")
> a38b71b0833e ("clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL")
> 1e8d929231cf ("clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64")
> d72689988d67 ("clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors")
> 4775bc63f880 ("clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses")
>
> [Test Case]
>
> * Compile tested
> * Boot tested on GCP AmpereOne instance
>
> [Where things could go wrong]
>
> * Low chance of regression. Changes isolated to ARM timers.
>
> [Other Info]
>
> * SF #00372821
>
> -----
>
> The following changes since commit 948bd6b3f8eb95d50cf7acbd0f7d082ab7d8d9db:
>
>    UBUNTU: Ubuntu-5.15.0-91.101 (2023-11-14 11:47:56 +0100)
>
> are available in the Git repository at:
>
>    git+ssh://john-cabaj@git.launchpad.net/~john-cabaj/ubuntu/+source/linux/+git/jammy ampere_one
>
> for you to fetch changes up to 2689b46fc765dacf5a246c9c204164ca1585e60e:
>
>    clocksource/drivers/arch_arm_timer: Move workaround synchronisation around (2023-11-30 16:31:17 -0600)
>
> ----------------------------------------------------------------
> Marc Zyngier (12):
>        clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses
>        clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors
>        clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64
>        clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL
>        clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names
>        clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue
>        clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL
>        clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code
>        clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations
>        clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface
>        clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming
>        clocksource/drivers/arch_arm_timer: Move workaround synchronisation around
>
> Oliver Upton (1):
>        clocksource/drivers/arm_arch_timer: Fix masking for high freq counters
>
>   arch/arm/include/asm/arch_timer.h    |  37 +++++++++++++---------
>   arch/arm64/include/asm/arch_timer.h  |  52 ++++++++++++++----------------
>   drivers/clocksource/arm_arch_timer.c | 243 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------------------------------------
>   include/clocksource/arm_arch_timer.h |   2 +-
>   4 files changed, 193 insertions(+), 141 deletions(-)
>
Acked-by: Roxana Nicolescu <roxana.nicolescu at canonical.com>