Second set of arm64 updates for 5.11

Hi Linus,

These are some some trivial updates that mostly fix/clean-up code pushed during the merging window. I'll be on holiday until the new year but I'll check email occasionally in case anything falls apart.

Merry Christmas!

The following changes since commit d889797530c66f699170233474eab3361471e808:

Merge remote-tracking branch 'arm64/for-next/fixes' into for-next/core (2020-12-09 18:04:55 +0000)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux tags/arm64-fixes

for you to fetch changes up to 9fd339a45be5c06e239d45a042eab9d25de87882:

arm64: Work around broken GCC 4.9 handling of "S" constraint (2020-12-17 11:46:20 +0000)

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arm64 fixes/updates:

- Work around broken GCC 4.9 handling of "S" asm constraint.

- Suppress W=1 missing prototype warnings.

- Warn the user when a small VA_BITS value cannot map the available memory.

- Drop the useless update to per-cpu cycles.

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Marc Zyngier (2):
arm64: Warn the user when a small VA_BITS value wastes memory
arm64: Work around broken GCC 4.9 handling of "S" constraint

Mark Rutland (1):
arm64: entry: suppress W=1 prototype warnings

Viresh Kumar (1):
arm64: topology: Drop the useless update to per-cpu cycles

 arch/arm64/include/asm/exception.h | 4 ++++
 arch/arm64/include/asm/kvm_asm.h   | 8 +++++++-
 arch/arm64/kernel/topology.c       | 6 +-----
 arch/arm64/mm/init.c               | 3 +++
 4 files changed, 15 insertions(+), 6 deletions(-)

Catalin