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This commit is contained in:
Bernhard Stoeckner
2025-01-27 19:36:56 +01:00
parent 9d0b0414a5
commit 54d69484da
1166 changed files with 318863 additions and 182687 deletions
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23
kernel-open/nvidia-uvm/uvm_mmu.c
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@@ -1029,7 +1029,6 @@ error:
// the pages can be in more than one location: vidmem is given priority, but if
// the allocation fails it will fallback to sysmem.
//
// Behavior outside of SR-IOV heavy (bare metal, SR-IOV standard, etc):
// Inputs Outputs
// init location | uvm_page_table_location || tree->location | tree->location_sys_fallback
// --------------|-------------------------||----------------|----------------
@@ -1039,12 +1038,17 @@ error:
// default | vidmem || vidmem | false
// default | sysmem || sysmem | false
//
// Some configurations impose more strict restrictions on the tree location,
// and do not obey the table above:
//
// - in SR-IOV heavy the page tree must be in vidmem, to prevent guest drivers
// from updating GPU page tables without hypervisor knowledge.
//
// - in Confidential Computing, all kernel allocations must be in vidmem.
// This is a hardware security constraint.
//
// In these setups, the location table is:
//
// In SR-IOV heavy the the page tree must be in vidmem, to prevent guest drivers
// from updating GPU page tables without hypervisor knowledge.
// When the Confidential Computing feature is enabled, all kernel
// allocations must be made in the CPR of vidmem. This is a hardware security
// constraint.
// Inputs Outputs
// init location | uvm_page_table_location || tree->location | tree->location_sys_fallback
// -------------|-------------------------||----------------|----------------
@@ -1065,9 +1069,7 @@ static void page_tree_set_location(uvm_page_tree_t *tree, uvm_aperture_t locatio
// be identified by having no channel manager.
if (tree->gpu->channel_manager != NULL) {
if (uvm_parent_gpu_is_virt_mode_sriov_heavy(tree->gpu->parent))
UVM_ASSERT(location == UVM_APERTURE_VID);
else if (g_uvm_global.conf_computing_enabled)
if (uvm_parent_gpu_is_virt_mode_sriov_heavy(tree->gpu->parent) || g_uvm_global.conf_computing_enabled)
UVM_ASSERT(location == UVM_APERTURE_VID);
}
@@ -2421,8 +2423,7 @@ void uvm_mmu_init_gpu_peer_addresses(uvm_gpu_t *gpu)
uvm_gpu_id_t gpu_id;
for_each_gpu_id(gpu_id) {
uvm_gpu_get_peer_mapping(gpu, gpu_id)->base = gpu->parent->rm_va_base +
gpu->parent->rm_va_size +
uvm_gpu_get_peer_mapping(gpu, gpu_id)->base = gpu->parent->peer_va_base +
UVM_PEER_IDENTITY_VA_SIZE * uvm_id_gpu_index(gpu_id);
}