Public bug reported:
[Impact]
* Google requested patches for AmpereOne machine t ype
[Fix]
* Changes already in Mantic, will be in Jammy 6.5 kernel, targeting Jammy 5.15
and Focal 5.4 for now
* Cherry-picks from upstream
0e5d5ae837c8 ("arm64: Add AMPERE1 to the Spectre-BHB affected list")
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
* To be tested by Google
[Where things could go wrong]
* Low chance of regression. Changes isolated to to timers.
[Other Info]
* SF #00372821
** Affects: linux-gcp (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-gcp (Ubuntu Focal)
Importance: Undecided
Status: New
** Affects: linux-gcp (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux-gcp (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux-gcp (Ubuntu Jammy)
Importance: Undecided
Status: New
** Description changed:
[Impact]
* Google requested patches for AmpereOne machine t ype
[Fix]
+ * Changes already in Mantic, will be in Jammy 6.5 kernel, targeting Jammy
5.15 and Focal 5.4 for now
* Cherry-picks from upstream
0e5d5ae837c8 ("arm64: Add AMPERE1 to the Spectre-BHB affected list")
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
* To be tested by Google
[Where things could go wrong]
* Low chance of regression. Changes isolated to to timers.
[Other Info]
* SF #00372821
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https://bugs.launchpad.net/bugs/2044192
Title:
Patches needed for AmpereOne (arm64)
Status in linux-gcp package in Ubuntu:
New
Status in linux-gcp source package in Focal:
New
Status in linux-gcp source package in Jammy:
New
Bug description:
[Impact]
* Google requested patches for AmpereOne machine t ype
[Fix]
* Changes already in Mantic, will be in Jammy 6.5 kernel, targeting Jammy
5.15 and Focal 5.4 for now
* Cherry-picks from upstream
0e5d5ae837c8 ("arm64: Add AMPERE1 to the Spectre-BHB affected list")
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
* To be tested by Google
[Where things could go wrong]
* Low chance of regression. Changes isolated to to timers.
[Other Info]
* SF #00372821
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