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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-03-29 22:54:41 +0100 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-06-20 20:28:50 +0200 |
| commit | 3991b04d4870fd334b77b859a8642ca7fb592603 (patch) | |
| tree | 9fa47b87e7ad6443d621d3b7f5a3eac97e06f14d /drivers/virt | |
| parent | x86/sev: Allow non-VMPL0 execution when an SVSM is present (diff) | |
| download | linux-3991b04d4870fd334b77b859a8642ca7fb592603.tar.xz linux-3991b04d4870fd334b77b859a8642ca7fb592603.zip | |
virt: sev-guest: Mark driver struct with __refdata to prevent section mismatch
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/4a81b0e87728a58904283e2d1f18f73abc69c2a1.1711748999.git.u.kleine-koenig@pengutronix.de
Diffstat (limited to 'drivers/virt')
| -rw-r--r-- | drivers/virt/coco/sev-guest/sev-guest.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c index 37522886ae95..f714009b9ff7 100644 --- a/drivers/virt/coco/sev-guest/sev-guest.c +++ b/drivers/virt/coco/sev-guest/sev-guest.c @@ -1203,8 +1203,13 @@ 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", |