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This commit is contained in:
Bernhard Stoeckner
2025-04-17 19:35:38 +02:00
parent e8113f665d
commit 4159579888
1142 changed files with 309085 additions and 272273 deletions
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29
kernel-open/nvidia/nv-usermap.c
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@@ -90,7 +90,6 @@ NV_STATUS NV_API_CALL nv_add_mapping_context_to_file(
}
nvamc->access_start = nvuap->access_start;
nvamc->access_size = nvuap->access_size;
nvamc->remap_prot_extra = nvuap->remap_prot_extra;
}
nvamc->prot = prot;
@@ -135,38 +134,22 @@ NV_STATUS NV_API_CALL nv_free_user_mapping(
}
/*
* This function adjust the {mmap,access}_{start,size} to reflect platform-specific
* mechanisms for isolating mappings at a finer granularity than the os_page_size
* This function checks if a user mapping should be allowed given the GPU's 4K
* page isolation requirements.
*/
NV_STATUS NV_API_CALL nv_get_usermap_access_params(
NV_STATUS NV_API_CALL nv_check_usermap_access_params(
nv_state_t *nv,
nv_usermap_access_params_t *nvuap
const nv_usermap_access_params_t *nvuap
)
{
NvU64 addr = nvuap->addr;
NvU64 size = nvuap->size;
const NvU64 addr = nvuap->addr;
const NvU64 size = nvuap->size;
nvuap->remap_prot_extra = 0;
/*
* Do verification and cache encoding based on the original
* (ostensibly smaller) mmap request, since accesses should be
* restricted to that range.
*/
if (rm_gpu_need_4k_page_isolation(nv) &&
NV_4K_PAGE_ISOLATION_REQUIRED(addr, size))
{
#if defined(NV_4K_PAGE_ISOLATION_PRESENT)
nvuap->remap_prot_extra = NV_PROT_4K_PAGE_ISOLATION;
nvuap->access_start = (NvU64)NV_4K_PAGE_ISOLATION_ACCESS_START(addr);
nvuap->access_size = NV_4K_PAGE_ISOLATION_ACCESS_LEN(addr, size);
nvuap->memArea.pRanges[0].start = (NvU64)NV_4K_PAGE_ISOLATION_MMAP_ADDR(addr);
nvuap->memArea.pRanges[0].size = NV_4K_PAGE_ISOLATION_MMAP_LEN(size);
#else
NV_DEV_PRINTF(NV_DBG_ERRORS, nv, "4K page isolation required but not available!\n");
return NV_ERR_OPERATING_SYSTEM;
#endif
}
return NV_OK;