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| H A D | wa_cve_2017_5715_mmu.S | 2b91536625f9f740a49dfaa784b0544aadf787f8 Thu May 31 10:38:33 UTC 2018 Dimitris Papastamos <dimitris.papastamos@arm.com> Fast path SMCCC_ARCH_WORKAROUND_1 calls from AArch32
When SMCCC_ARCH_WORKAROUND_1 is invoked from a lower EL running in
AArch32 state, ensure that the SMC call will take a shortcut in EL3.
This minimizes the time it takes to apply the mitigation in EL3.
When lower ELs run in AArch32, it is preferred that they execute the
`BPIALL` instruction to invalidate the BTB. However, on some cores
the `BPIALL` instruction may be a no-op and thus would benefit from
making the SMCCC_ARCH_WORKAROUND_1 call go through the fast path.
Change-Id: Ia38abd92efe2c4b4a8efa7b70f260e43c5bda8a5
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
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