From cf65fc4ba9011e2214dc00e198599e581fc391ee Mon Sep 17 00:00:00 2001 From: Arthur Hanson Rasmusson Date: Wed, 7 Oct 2026 14:59:19 -0400 Subject: vgsp: m104 - inject the mail_kernel module-data base when bank-4 is empty The forwarded mail_kernel reads __device__ kMail through c[0x4][0x0] (the driver-provided module-data base), but the guest's bank-4 page content is zero in the launch (the driver's value never lands in the resolved page). With gr_mail_patch set, when bank 4's first 8 bytes are zero, allocate a module page holding the demo message, map it at server-managed VA 0x11ff00000 (UPDATE_PDE_2, inside [0x100000000,0x11fffffff)) and point c[0x4][0x0] there. The kernel then reads the message from device memory and writes out[i] through the already-relocated bank-0 pointer; vadd (params only) becomes the real relocated-data acceptance test. --- kernel/gsp_phys_gpu.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'kernel/gsp_phys_gpu.h') diff --git a/kernel/gsp_phys_gpu.h b/kernel/gsp_phys_gpu.h index 7df30cb..e83220a 100644 --- a/kernel/gsp_phys_gpu.h +++ b/kernel/gsp_phys_gpu.h @@ -346,6 +346,9 @@ int gsp_phys_rmcall_gr_gpc_mmu_init_value(void); /* m96: KIND (63:56) for window-0 shadow PTEs (0 = historical kind 0). */ int gsp_phys_rmcall_gr_pte_kind_value(void); +/* m104: inject the mail_kernel message page when bank-4 is empty. */ +int gsp_phys_rmcall_gr_mail_patch_value(void); + /* m72: append the vendor local-memory context block to the GR prelude so * SKEDCHECK05 LOCAL_MEMORY_TOTAL_SIZE passes (default 0); base VA and * per-TPC size are overridable for A/B runs. */ -- cgit v1.2.3