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Some CPUs(eg: ampere-emag) can speculate past an ERET instruction and potentially perform
speculative accesses to memory before processing the exception return.
Since the register state is often controlled by a lower privilege level
at the point of an ERET, this could potentially be used as part of a
side-channel attack.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 330777900
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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This immediately revealed an escape analysis violation (!), where
the sync.Map was being used in a context that escapes were not
allowed. This is a relatively minor fix and is included.
PiperOrigin-RevId: 328611237
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This enables pre-release testing with 1.16. The intention is to replace these
with a nogo check before the next release.
PiperOrigin-RevId: 328193911
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Our "Preconditions:" blocks are very useful to determine the input invariants,
but they are bit inconsistent throughout the codebase, which makes them harder
to read (particularly cases with 5+ conditions in a single paragraph).
I've reformatted all of the cases to fit in simple rules:
1. Cases with a single condition are placed on a single line.
2. Cases with multiple conditions are placed in a bulleted list.
This format has been added to the style guide.
I've also mentioned "Postconditions:", though those are much less frequently
used, and all uses already match this style.
PiperOrigin-RevId: 327687465
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PiperOrigin-RevId: 330777900
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