arm64: smp: Rework early feature mismatched detection

Browse source

Rather than add additional variables to detect specific early feature
mismatches with secondary CPUs, we can instead dedicate the upper bits
of the CPU boot status word to flag specific mismatches.

This allows us to communicate both granule and VA-size mismatches back
to the primary CPU without the need for additional book-keeping.

Tested-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

...

This commit is contained in:

Will Deacon 2018-12-10 14:21:13 +00:00

parent 68d23da437

commit 66f16a2451

3 changed files with 19 additions and 19 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

arch/arm64/include/asm/smp.h

View file

12

arch/arm64/kernel/head.S

View file

11

arch/arm64/kernel/smp.c

View file