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4148575abe
Add cmpxchg_user_key() which allows to execute a compare and exchange on a user space address. This allows also to specify a storage key which makes sure that key-controlled protection is considered. This is based on a patch written by Janis Schoetterl-Glausch. Link: https://lore.kernel.org/all/20220930210751.225873-2-scgl@linux.ibm.com Cc: Janis Schoetterl-Glausch <scgl@linux.ibm.com> Link: https://lore.kernel.org/r/Y2J8axs+bcQ2dO/l@osiris Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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