linux-kernel - [PATCH v4 23/30] context_tracking: Turn CT_STATE

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Message-ID: <20250114175143.81438-24-vschneid@redhat.com>
Date: Tue, 14 Jan 2025 18:51:36 +0100
From: Valentin Schneider <vschneid@...hat.com>
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Subject: [PATCH v4 23/30] context_tracking: Turn CT_STATE_* into bits

A later patch will require to easily exclude CT_STATE_KERNEL from a genuine
a ct->state read CT_STATE_KERNEL, which requires that value being non-zero
and exclusive with the other CT_STATE_* values.

This increases the size of the CT_STATE region of the ct->state variable by
two bits.

Signed-off-by: Valentin Schneider <vschneid@...hat.com>
---
 include/linux/context_tracking_state.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/context_tracking_state.h b/include/linux/context_tracking_state.h
index 0b81248aa03e2..eb2149b20baef 100644
--- a/include/linux/context_tracking_state.h
+++ b/include/linux/context_tracking_state.h
@@ -11,11 +11,11 @@
 
 enum ctx_state {
 	CT_STATE_DISABLED	= -1,	/* returned by ct_state() if unknown */
-	CT_STATE_KERNEL		= 0,
-	CT_STATE_IDLE		= 1,
-	CT_STATE_USER		= 2,
-	CT_STATE_GUEST		= 3,
-	CT_STATE_MAX		= 4,
+	CT_STATE_KERNEL		= 1,
+	CT_STATE_IDLE		= 2,
+	CT_STATE_USER		= 4,
+	CT_STATE_GUEST		= 8,
+	CT_STATE_MAX		= 9,
 };
 
 struct context_tracking {
-- 
2.43.0