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KVM: arm64: Mark set_sysreg_masks() as inline to avoid build failure

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When compiling with CONFIG_CC_OPTIMIZE_FOR_SIZE=y, set_sysreg_masks()
fails to compile thanks to:

	BUILD_BUG_ON(!__builtin_constant_p(sr));

as the compiler doesn't identify sr as a constant, despite all the
callers passing constants.

Fix the issue by always inlining this function, which allows GCC to
do the right thing.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202411201857.ZNudtGJl-lkp@intel.com/
Fixes: a016202009 ("KVM: arm64: Extend masking facility to arbitrary registers")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/r/20241120111516.304250-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Marc Zyngier 2024-11-20 11:15:16 +00:00 committed by Oliver Upton
parent 3b2c81d5fe
commit 0f3a0f23f5
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/nested.c
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@ -951,7 +951,7 @@ u64 kvm_vcpu_apply_reg_masks(const struct kvm_vcpu *vcpu,
return v;
}
static void set_sysreg_masks(struct kvm *kvm, int sr, u64 res0, u64 res1)
static __always_inline void set_sysreg_masks(struct kvm *kvm, int sr, u64 res0, u64 res1)
{
int i = sr - __SANITISED_REG_START__;