vgsp: m102 - relocate guest data into the server-managed VA region and rewrite bank pointers

The server refuses UPDATE_PDE_2 (status 0x1f) for guest CUDA VAs: they are
client-managed, while the golden VAS reserves the server-managed region
[0x100000000, 0x11fffffff) (gsp_phys_booter.c:8455). Map each resolved data
page there at an affine-relocated VA (identity HPA, no copies), rewrite every
8-byte pointer value inside the shadowed const-bank pages (banks 0..7) that
falls inside a mapped guest window to the relocated VA, and raise the Tier-1
window pool to 32 windows x 512 PTEs so the relocated pages fit. The kernel
now reaches its real data through the server-installed windows.

1 files changed, 9 insertions, 0 deletions

diff --git a/kernel/gsp_phys_booter.h b/kernel/gsp_phys_booter.h
index 29cf07f..896a436 100644
--- a/kernel/gsp_phys_booter.h
+++ b/kernel/gsp_phys_booter.h
@@ -366,6 +366,13 @@ struct gsp_phys_gr_inline {
 struct gsp_phys_gr_data_page {
 	u64 va;		/* guest VA, page aligned */
 	u64 hpa;	/* host PA, page aligned */
+	u64 reloc_va;	/* m102: server-managed VA this hpa is mapped at */
+};
+
+/* m102: guest 2 MB window -> relocated (server-managed) window base. */
+struct gsp_phys_gr_data_win {
+	u64 va_base;	/* guest VA window base (2 MB aligned) */
+	u64 reloc_base;	/* relocated VA window base (2 MB aligned) */
 };
 
 struct gsp_phys_gr_submit {
@@ -390,6 +397,8 @@ struct gsp_phys_gr_submit {
 	u32 n_inl;
 	const struct gsp_phys_gr_data_page *data;	/* m99: identity pages */
 	u32 n_data;
+	const struct gsp_phys_gr_data_win *data_wins;	/* m102: window map */
+	u32 n_data_wins;
 	u64 rel_hpa;		/* guest-visible QMD release0 page, or 0 */
 	u32 rel_off;
 	u32 rel_payload;