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-rw-r--r--kernel/gsp_phys_booter.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/gsp_phys_booter.c b/kernel/gsp_phys_booter.c
index ad8d68b..d7ee3e8 100644
--- a/kernel/gsp_phys_booter.c
+++ b/kernel/gsp_phys_booter.c
@@ -9457,6 +9457,13 @@ static void gsp_phys_rmcall_pdb_build(void)
GSP_PHYS_RMCALL_GR_MAIL_SLOT),
mail, sizeof(mail));
}
+ /* m132: unique marker in a spare bounce page (101, past
+ * the 100 data pages) so a probe can prove whether the
+ * SM's data path reaches the bounce chunk at all. */
+ put_unaligned_le64(0xCAFEBABEDEADBEEFULL,
+ (u8 *)gsp_phys_chunk_page_va(
+ &boot_stage.rmcall_gr_bounce,
+ GSP_PHYS_RMCALL_GR_MAIL_SLOT + 1u));
} else {
pr_err("vgsp-boot: rm-call: bounce window allocation failed\n");
}