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arm64: kernel: Fix kernel warning when nokaslr is passed to commandline

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'Unknown kernel command line parameters "nokaslr", will be passed to
user space' message is noticed in the dmesg when nokaslr is passed to
the kernel commandline on ARM64 platform. This is because nokaslr param
is handled by early cpufeature detection infrastructure and the parameter
is never consumed by a kernel param handler. Fix this warning by
providing a dummy kernel param handler for nokaslr.

Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Link: https://lore.kernel.org/r/20230412043258.397455-1-quic_pkondeti@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Pavankumar Kondeti 2023-04-12 10:02:58 +05:30 committed by Will Deacon
parent af6c0bd59f
commit a2a83eb40f
1 changed files with 7 additions and 0 deletions
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7
arch/arm64/kernel/idreg-override.c
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@ -178,6 +178,13 @@ static const struct {
{ "nokaslr", "kaslr.disabled=1" },
};
static int __init parse_nokaslr(char *unused)
{
/* nokaslr param handling is done by early cpufeature code */
return 0;
}
early_param("nokaslr", parse_nokaslr);
static int __init find_field(const char *cmdline,
const struct ftr_set_desc *reg, int f, u64 *v)
{