Re: [PATCH] tee: add FOLL_LONGTERM for CMA case when alloc shm
From: Christoph Hellwig <hch@infradead.org>
Date: 2023-05-17 07:35:42
Also in:
linux-mediatek, linux-mm, lkml, op-tee
quoted hunk ↗ jump to hunk
+ u32 page_flag = FOLL_WRITE; if (!tee_device_get(teedev)) return ERR_PTR(-EINVAL);@@ -255,9 +256,11 @@ register_shm_helper(struct tee_context *ctx, unsigned long addr, ret = ERR_PTR(-ENOMEM); goto err_free_shm; } - +#if IS_ENABLED(CONFIG_CMA) + page_flag |= FOLL_LONGTERM; +#endif if (flags & TEE_SHM_USER_MAPPED)
If this mapping is long live it should always use FOLL_LONGTERM. The ifdef does not make sense. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel