6.10-stable review patch. If anyone has any objections, please let me know.
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From: Uwe Kleine-König u.kleine-koenig@pengutronix.de
[ Upstream commit 3991b04d4870fd334b77b859a8642ca7fb592603 ]
As described in the added code comment, a reference to .exit.text is ok for drivers registered via module_platform_driver_probe(). Make this explicit to prevent the following section mismatch warning:
WARNING: modpost: drivers/virt/coco/sev-guest/sev-guest: section mismatch in reference: \ sev_guest_driver+0x10 (section: .data) -> sev_guest_remove (section: .exit.text)
that triggers on an allmodconfig W=1 build.
Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Signed-off-by: Borislav Petkov (AMD) bp@alien8.de Reviewed-by: Kuppuswamy Sathyanarayanan sathyanarayanan.kuppuswamy@linux.intel.com Reviewed-by: Tom Lendacky thomas.lendacky@amd.com Link: https://lore.kernel.org/r/4a81b0e87728a58904283e2d1f18f73abc69c2a1.171174899... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/virt/coco/sev-guest/sev-guest.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c index 654290a8e1ba..a100d6241992 100644 --- a/drivers/virt/coco/sev-guest/sev-guest.c +++ b/drivers/virt/coco/sev-guest/sev-guest.c @@ -1009,8 +1009,13 @@ static void __exit sev_guest_remove(struct platform_device *pdev) * This driver is meant to be a common SEV guest interface driver and to * support any SEV guest API. As such, even though it has been introduced * with the SEV-SNP support, it is named "sev-guest". + * + * sev_guest_remove() lives in .exit.text. For drivers registered via + * module_platform_driver_probe() this is ok because they cannot get unbound + * at runtime. So mark the driver struct with __refdata to prevent modpost + * triggering a section mismatch warning. */ -static struct platform_driver sev_guest_driver = { +static struct platform_driver sev_guest_driver __refdata = { .remove_new = __exit_p(sev_guest_remove), .driver = { .name = "sev-guest",