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| author | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-07 15:33:31 -0400 |
|---|---|---|
| committer | Arthur Hanson Rasmusson <arthur@vgpu.io> | 2026-10-07 15:33:31 -0400 |
| commit | 7f37c4197c95e5d91b633c10025d012715e04a8e (patch) | |
| tree | 122b034801f52f3e2cadd9aa3d027e92f056c778 /kernel/gsp_phys_booter.c | |
| parent | 9a3140ddb465ab26594799197de3b41f32b528bc (diff) | |
| download | open-iov-7f37c4197c95e5d91b633c10025d012715e04a8e.tar.gz open-iov-7f37c4197c95e5d91b633c10025d012715e04a8e.zip | |
vgsp: m113 - re-register the VAS page directory after planting data (re-commit probe)
All late engine-tree writes are invisible to the SM walker (only the
commit-time snapshot resolves); the mail injection at a main-window fresh
slot also fails (m112). Probe whether UNSET+SET_PAGE_DIRECTORY on the
ladder VAS after planting forces the server walker to re-snapshot the tree;
gated by gr_recommit.
Diffstat (limited to 'kernel/gsp_phys_booter.c')
| -rw-r--r-- | kernel/gsp_phys_booter.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/gsp_phys_booter.c b/kernel/gsp_phys_booter.c index 772530d..86205d1 100644 --- a/kernel/gsp_phys_booter.c +++ b/kernel/gsp_phys_booter.c @@ -17113,6 +17113,46 @@ gr_page_unmapped: } pr_info("vgsp-gr: guest data identity-map: %u pages in the engine tree, %u failed (pt pages=%u)\n", dmapped, dfailed, boot_stage.rmcall_gr_data_pt_n); + if (gsp_phys_rmcall_gr_recommit_value()) { + struct gsp_phys_rmcall_pdb_params rp; + struct { + __le32 h_va_space; + __le32 ch_id; + __le32 sub_device_id; + } up; + u32 rr = 0, st = 0; + int rc; + + memset(&rp, 0, sizeof(rp)); + rp.phys_address = cpu_to_le64((u64) + gsp_phys_chunk_page_dma( + &boot_stage.rmcall_chunks + [GSP_PHYS_RMCALL_BUF_VASPDB], 0)); + rp.num_entries = cpu_to_le32( + GSP_PHYS_RMCALL_PDB_NUM_ENTRIES); + rp.flags = cpu_to_le32( + GSP_PHYS_RMCALL_PDB_FLAG_APERTURE_SYSMEM_NONCOH | + GSP_PHYS_RMCALL_PDB_FLAG_ALL_CHANNELS); + rp.h_va_space = cpu_to_le32(boot_stage.rmcall_vas); + memset(&up, 0, sizeof(up)); + up.h_va_space = cpu_to_le32(boot_stage.rmcall_vas); + rc = gsp_phys_rmcall_control(bar0, + boot_stage.rmcall_device, 0x801814u, + &up, sizeof(up), sizeof(up), NULL, 0, + &rr, &st, "DMA_UNSET_PAGE_DIRECTORY"); + pr_info("vgsp-gr: re-commit UNSET: ret=%d status=0x%x rpc=0x%x\n", + rc, st, rr); + rr = 0; + st = 0; + rc = gsp_phys_rmcall_control(bar0, + boot_stage.rmcall_device, + GSP_PHYS_RMCALL_CTRL_DMA_SET_PAGE_DIRECTORY, + &rp, sizeof(rp), sizeof(rp), &rp, + sizeof(rp), &rr, &st, + "DMA_SET_PAGE_DIRECTORY re-commit"); + pr_info("vgsp-gr: re-commit SET: ret=%d status=0x%x rpc=0x%x\n", + rc, st, rr); + } } if (gsp_phys_rmcall_gr_gpc_mmu_init_value()) gsp_phys_rmcall_gr_gpc_mmu_init(bar0); |