APPLIED: [SRU][PULL][jammy:linux-gcp] Patches needed for AmpereOne (arm64)

[John Cabaj]

On 11/30/23 8:33 AM, John Cabaj wrote:
> BugLink: https://bugs.launchpad.net/bugs/2044192
> 
> [Impact]
> 
> * Google requested patches for AmpereOne machine type
> 
> [Fix]
> 
> * Cherry-picks from upstream
> 
> 484baebd076c ("clocksource/drivers/arch_arm_timer: Move workaround synchronisation around")
> ad6c750791e3 ("clocksource/drivers/arm_arch_timer: Fix masking for high freq counters")
> 6e69aa090138 ("clocksource/drivers/arm_arch_timer: Drop unnecessary ISB on CVAL programming")
> ab9a0239324a ("clocksource/drivers/arm_arch_timer: Remove any trace of the TVAL programming interface")
> 9f074b90e6fd ("clocksource/drivers/arm_arch_timer: Work around broken CVAL implementations")
> 562eb64c090f ("clocksource/drivers/arm_arch_timer: Advertise 56bit timer to the core code")
> 7bc14651e24e ("clocksource/drivers/arm_arch_timer: Move MMIO timer programming over to CVAL")
> 8b06e41fe7bc ("clocksource/drivers/arm_arch_timer: Fix MMIO base address vs callback ordering issue")
> 0ffa6302e2f6 ("clocksource/drivers/arm_arch_timer: Move drop _tval from erratum function names")
> 8065137de0cf ("clocksource/drivers/arm_arch_timer: Move system register timer programming over to CVAL")
> 674941dc157e ("clocksource/drivers/arm_arch_timer: Extend write side of timer register accessors to u64")
> 0c1f5fc141ea ("clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors")
> 02aecc78b278 ("clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses")
> 
> [Test Case]
> 
> * Compile tested
> * Boot tested on 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 04c19cd6345a4c14df5e64d6a4523d52342321dc:
> 
>   UBUNTU: Ubuntu-gcp-5.15.0-1048.56 (2023-11-18 14:50:34 -0300)
> 
> are available in the git repository at:
> 
>   git+ssh://user@kathleen/home/john-cabaj/for-review/jammy_linux-gcp/ ampere_one
> 
> for you to fetch changes up to 484baebd076c93b60979ae26718477c8bf1bb47a:
> 
>   clocksource/drivers/arch_arm_timer: Move workaround synchronisation around (2023-11-21 16:21:06 -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(-)

Applied to jammy:linux-gcp master-next branch.


Thanks,
John