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Fixup PAT hack to trigger in all cases (and log) #107

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Merged
bleggett merged 1 commit into from
Aug 1, 2025
Merged

Fixup PAT hack to trigger in all cases (and log) #107

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27 changes: 21 additions & 6 deletions ...a/0001-Hack-Xen-detection-for-Edera.patch → ...vidia/0001-PAT-detection-workaround.patch
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Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
From d14d762911594a3b4c9dd11f15105e80d2e4335b Mon Sep 17 00:00:00 2001
From 3b6052e852abc1384020eff979d4ee886defee91 Mon Sep 17 00:00:00 2001
From: Benjamin Leggett <benjamin@edera.io>
Date: Mon, 28 Jul 2025 20:06:45 -0400
Subject: [PATCH] Edera hack
Date: Thu, 31 Jul 2025 19:36:18 -0400
Subject: [PATCH] PAT detection workaround

---
kernel-open/nvidia/nv-pat.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
kernel-open/nvidia/nv-pat.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/kernel-open/nvidia/nv-pat.c b/kernel-open/nvidia/nv-pat.c
index 1fa530d9..83c00eab 100644
index 1fa530d9..2dc5cee7 100644
--- a/kernel-open/nvidia/nv-pat.c
+++ b/kernel-open/nvidia/nv-pat.c
@@ -40,12 +40,9 @@ int nv_pat_mode = NV_PAT_MODE_DISABLED;
Expand Down Expand Up @@ -43,6 +43,21 @@ index 1fa530d9..83c00eab 100644
write_cr0((cr0 & 0x9fffffff));
if (cr4 & 0x80) NV_WRITE_CR4(cr4);
}
@@ -390,8 +387,12 @@ static int nv_determine_pat_mode(void)
else if (PAT_WC_index != 0xf)
{
nv_printf(NV_DBG_ERRORS,
- "NVRM: PAT configuration unsupported.\n");
- return NV_PAT_MODE_DISABLED;
+ "NVRM: Hardware PAT configuration unsupported, using builtin.\n");
+ #if NV_ENABLE_BUILTIN_PAT_SUPPORT
+ return NV_PAT_MODE_BUILTIN;
+ #else
+ return NV_PAT_MODE_DISABLED;
+ #endif /* NV_ENABLE_BUILTIN_PAT_SUPPORT */
}
else
{
--
2.50.1