linux-kernel - [RFC PATCH 15/21] PCI: Make PCI saved state and capability structs public

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Message-ID: <20251018000713.677779-16-vipinsh@google.com>
Date: Fri, 17 Oct 2025 17:07:07 -0700
From: Vipin Sharma <vipinsh@...gle.com>
To: bhelgaas@...gle.com, alex.williamson@...hat.com, pasha.tatashin@...een.com, 
	dmatlack@...gle.com, jgg@...pe.ca, graf@...zon.com
Cc: pratyush@...nel.org, gregkh@...uxfoundation.org, chrisl@...nel.org, 
	rppt@...nel.org, skhawaja@...gle.com, parav@...dia.com, saeedm@...dia.com, 
	kevin.tian@...el.com, jrhilke@...gle.com, david@...hat.com, 
	jgowans@...zon.com, dwmw2@...radead.org, epetron@...zon.de, 
	junaids@...gle.com, linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org, 
	kvm@...r.kernel.org, linux-kselftest@...r.kernel.org, 
	Vipin Sharma <vipinsh@...gle.com>
Subject: [RFC PATCH 15/21] PCI: Make PCI saved state and capability structs public

Move struct pci_saved_state{} and struct pci_cap_saved_data{} to
linux/pci.h so that they are available to code outside of the PCI core.

These structs will be used in subsequent commits to serialize and
deserialize PCI state across Live Update.

Signed-off-by: Vipin Sharma <vipinsh@...gle.com>
---
 drivers/pci/pci.c   |  5 -----
 drivers/pci/pci.h   |  7 -------
 include/linux/pci.h | 13 +++++++++++++
 3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b14dd064006c..b68bf3e820ce 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1884,11 +1884,6 @@ void pci_restore_state(struct pci_dev *dev)
 }
 EXPORT_SYMBOL(pci_restore_state);
 
-struct pci_saved_state {
-	u32 config_space[16];
-	struct pci_cap_saved_data cap[];
-};
-
 /**
  * pci_store_saved_state - Allocate and return an opaque struct containing
  *			   the device saved state.
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 09476a467cc0..973fcdf7898d 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -197,13 +197,6 @@ int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
 int pci_bus_error_reset(struct pci_dev *dev);
 int __pci_reset_bus(struct pci_bus *bus);
 
-struct pci_cap_saved_data {
-	u16		cap_nr;
-	bool		cap_extended;
-	unsigned int	size;
-	u32		data[];
-};
-
 struct pci_cap_saved_state {
 	struct hlist_node		next;
 	struct pci_cap_saved_data	cap;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8ce2d4528193..70c9b12c8c02 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1448,6 +1448,19 @@ void pci_disable_rom(struct pci_dev *pdev);
 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
 
+
+struct pci_cap_saved_data {
+	u16		cap_nr;
+	bool		cap_extended;
+	unsigned int	size;
+	u32		data[];
+};
+
+struct pci_saved_state {
+	u32 config_space[16];
+	struct pci_cap_saved_data cap[];
+};
+
 /* Power management related routines */
 int pci_save_state(struct pci_dev *dev);
 void pci_restore_state(struct pci_dev *dev);
-- 
2.51.0.858.gf9c4a03a3a-goog