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(parent: 7ce515e) | patch
crypto: ccp - Flush the SEV-ES TMR memory before giving it to firmware
authorTom Lendacky <thomas.lendacky@amd.com>
Mon, 23 Jan 2023 22:53:08 +0000 (16:53 -0600)
committerHerbert Xu <herbert@gondor.apana.org.au>
Fri, 3 Feb 2023 04:54:54 +0000 (12:54 +0800)
commit46a334a98f585ef78d51d8f5736596887bdd7f54
treee2ad29fc38b189e5b18cde8cc2a3749bcb41397atree | snapshot
parent7ce515e636ec1807723c30fd3a6181b4ccac6ec6commit | diff
crypto: ccp - Flush the SEV-ES TMR memory before giving it to firmware

Perform a cache flush on the SEV-ES TMR memory after allocation to prevent
any possibility of the firmware encountering an error should dirty cache
lines be present. Use clflush_cache_range() to flush the SEV-ES TMR memory.

Fixes: 97f9ac3db661 ("crypto: ccp - Add support for SEV-ES to the PSP driver")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/ccp/sev-dev.c diff | blob | history
Domain: System / Kernel;