BACKPORT: arm64: entry: Remove confusing comment
The comment about SYS_MEMBARRIER_SYNC_CORE relying on ERET being context-synchronizing is confusing and misplaced with kpti. Given that this is already documented under Documentation/ (see arch-support.txt for membarrier), remove the comment altogether. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com> Change-Id: I0cd2fcac7dbefdc0b408d85be8bb39cd6590f3a9
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@ -359,10 +359,6 @@ alternative_else_nop_endif
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ldp x24, x25, [sp, #16 * 12]
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ldp x26, x27, [sp, #16 * 13]
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ldp x28, x29, [sp, #16 * 14]
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/*
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* ARCH_HAS_MEMBARRIER_SYNC_CORE rely on eret context synchronization
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* when returning from IPI handler, and when returning to user-space.
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*/
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.if \el == 0
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alternative_if_not ARM64_UNMAP_KERNEL_AT_EL0
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