[android-common:android17-6.18-kminext 2/2] arch/arm64/kvm/hyp/nvhe/pkvm.c:1887:7: warning: assignment to 'const uuid_t *' from 'int' makes pointer from integer without a cast

Hi Bart=C5=82omiej,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android17-6.18-kmine=
xt
head:   5f0eb26cb7246c8412f464078342992f756b7b74
commit: eff36ac2fe9748dfe31b22d00b62f6eaf7323732 [2/2] ANDROID: KVM: arm64:=
 Add TRNG handling for protected guests
config: arm64-randconfig-003-20260731 (https://download.01.org/0day-ci/arch=
ive/20260801/[email protected]/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
reproduce (this is a W=3D1 build): (https://download.01.org/0day-ci/archive=
/20260801/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new versio=
n of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608010034.YXjcWdUW-lkp@i=
ntel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/kvm/hyp/nvhe/pkvm.c:23:
   arch/arm64/kvm/hyp/include/nvhe/modules.h:40:6: warning: no previous pro=
totype for 'module_handle_host_perm_fault' [-Wmissing-prototypes]
      40 | bool module_handle_host_perm_fault(struct user_pt_regs *regs, u6=
4 esr, u64 addr) { return false; }
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/include/nvhe/modules.h:41:6: warning: no previous pro=
totype for 'module_handle_host_smc' [-Wmissing-prototypes]
      41 | bool module_handle_host_smc(struct user_pt_regs *regs) { return =
false; }
         |      ^~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/include/nvhe/modules.h:42:6: warning: no previous pro=
totype for 'module_handle_guest_smc' [-Wmissing-prototypes]
      42 | bool module_handle_guest_smc(struct arm_smccc_1_2_regs *regs, st=
ruct arm_smccc_1_2_regs *res,
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hyp/nvhe/pkvm.c: In function 'module_handle_guest_trng_rn=
g':
   arch/arm64/kvm/hyp/nvhe/pkvm.c:1868:8: error: implicit declaration of fu=
nction 'module_get_guest_trng_rng'; did you mean 'module_handle_guest_trng_=
rng'? [-Werror=3Dimplicit-function-declaration]
    1868 |  ret =3D module_get_guest_trng_rng(entropy, nbits);
         |        ^~~~~~~~~~~~~~~~~~~~~~~~~
         |        module_handle_guest_trng_rng
   arch/arm64/kvm/hyp/nvhe/pkvm.c: In function 'module_handle_guest_trng':
   arch/arm64/kvm/hyp/nvhe/pkvm.c:1887:9: error: implicit declaration of fu=
nction 'module_get_guest_trng_uuid'; did you mean 'module_handle_guest_trng=
_rng'? [-Werror=3Dimplicit-function-declaration]
    1887 |  uuid =3D module_get_guest_trng_uuid();
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
         |         module_handle_guest_trng_rng
>> arch/arm64/kvm/hyp/nvhe/pkvm.c:1887:7: warning: assignment to 'const uui=
d_t *' from 'int' makes pointer from integer without a cast [-Wint-conversi=
on]
    1887 |  uuid =3D module_get_guest_trng_uuid();
         |       ^
   cc1: some warnings being treated as errors


vim +1887 arch/arm64/kvm/hyp/nvhe/pkvm.c

  1879=09
  1880	static bool module_handle_guest_trng(struct kvm_vcpu *vcpu)
  1881	{
  1882		u32 fn;
  1883		u64 ret =3D SMCCC_RET_NOT_SUPPORTED;
  1884		const uuid_t *uuid;
  1885=09
  1886		fn =3D smccc_get_function(vcpu);
> 1887		uuid =3D module_get_guest_trng_uuid();
  1888		if (!uuid)
  1889			return false;
  1890=09
  1891		switch (fn) {
  1892		case ARM_SMCCC_TRNG_VERSION:
  1893			ret =3D ARM_SMCCC_TRNG_VER_1_0;
  1894			break;
  1895		case ARM_SMCCC_TRNG_FEATURES:
  1896			switch (smccc_get_arg1(vcpu)) {
  1897			case ARM_SMCCC_TRNG_VERSION:
  1898			case ARM_SMCCC_TRNG_FEATURES:
  1899			case ARM_SMCCC_TRNG_GET_UUID:
  1900			case ARM_SMCCC_TRNG_RND64:
  1901				ret =3D SMCCC_RET_SUCCESS;
  1902				break;
  1903			}
  1904			break;
  1905		case ARM_SMCCC_TRNG_GET_UUID:
  1906			smccc_set_retval(vcpu, le32_to_cpu(((u32 *)uuid->b)[0]),
  1907					 le32_to_cpu(((u32 *)uuid->b)[1]),
  1908					 le32_to_cpu(((u32 *)uuid->b)[2]),
  1909					 le32_to_cpu(((u32 *)uuid->b)[3]));
  1910			return true;
  1911		case ARM_SMCCC_TRNG_RND64:
  1912			return module_handle_guest_trng_rng(vcpu);
  1913		default:
  1914			return false;
  1915		}
  1916=09
  1917		smccc_set_retval(vcpu, ret, 0, 0, 0);
  1918		return true;
  1919	}
  1920=09

--
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https://github.com/intel/lkp-tests/wiki