Commit 788c954f authored Jun 17, 2022 by Julien Grall Committed by Greg Kroah-Hartman Jun 29, 2022

x86/xen: Remove undefined behavior in setup_features()



[ Upstream commit ecb6237fa397b7b810d798ad19322eca466dbab1 ]

1 << 31 is undefined. So switch to 1U << 31.

Fixes: 5ead97c8 ("xen: Core Xen implementation")
Signed-off-by: Julien Grall <jgrall@amazon.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220617103037.57828-1-julien@xen.org


Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent c7bdaad9

drivers/xen/features.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -29,6 +29,6 @@ void xen_setup_features(void)
		if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
		break;
		for (j = 0; j < 32; j++)
		xen_features[i * 32 + j] = !!(fi.submap & 1<<j);
		xen_features[i * 32 + j] = !!(fi.submap & 1U << j);
		}
		}