Messages in this thread | | | From | "Luck, Tony" <> | Subject | RE: [PATCH v3 1/7] x86/sgx: Provide indication of life-cycle of EPC pages | Date | Wed, 28 Jul 2021 22:57:07 +0000 |
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> Wouldn't it be safer to do something like: > > page->owner = owner ? owner : (void *)-1; > > -1 is non-NULL, but also invalid, which makes it harder for us to poke > ourselves in the eye.
Does Linux have some #define INVALID_POINTER thing that provides a guaranteed bad (e.g. non-canonical) value?
(void *)-1 seems hacky.
-Tony
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