From ae11886aa97a81e209fb261e5aa4d2d4edfd357a Mon Sep 17 00:00:00 2001 From: Arthur Hanson Rasmusson Date: Wed, 7 Oct 2026 18:53:20 -0400 Subject: vgsp: m130 - mirror write readback diagnostic (does the guest-page pointer patch land?) --- kernel/gsp_phys_booter.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'kernel') diff --git a/kernel/gsp_phys_booter.c b/kernel/gsp_phys_booter.c index 94d143e..ad8d68b 100644 --- a/kernel/gsp_phys_booter.c +++ b/kernel/gsp_phys_booter.c @@ -16357,6 +16357,13 @@ static void gsp_phys_gr_rewrite_data_vars(u32 *w, u32 n_words, if (mirror) { mirror[k] = (u32)v; mirror[k + 1] = (u32)(v >> 32); + /* m130: prove the guest-page write landed. */ + if (rew < 16) + pr_info("vgsp-gr: bank %u mirror @0x%x wrote 0x%llx readback 0x%llx\n", + bank, k * 4, v, + get_unaligned_le64( + (const u8 *)mirror + + k * 4)); } rew++; break; -- cgit v1.2.3