arm64: don't restore GPRs when context tracking

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Now that syscalls are invoked with pt_regs, we no longer need to ensure
that the argument regsiters are live in the entry assembly, and it's
fine to not restore them after context_tracking_user_exit() has
corrupted them.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Mark Rutland 2018-07-11 14:56:46 +01:00 • committed by Will Deacon

parent 3b7142752e

commit d9be03256d

1 changed files with 1 additions and 11 deletions

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arch/arm64/kernel/entry.S

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