arch/arm64/kvm/sys_regs.c:2402: warning: Function parameter or member 'params' not described in 'kvm_handle_cp_32'

From: kernel test robot
Date: Sat Jan 06 2024 - 08:14:57 EST


Hi Oliver,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 95c8a35f1c017327eab3b6a2ff5c04255737c856
commit: e65197666773f39e4378161925e5a1c7771cff29 KVM: arm64: Wire up CP15 feature registers to their AArch64 equivalents
date: 1 year, 8 months ago
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20240106/202401062105.Xv4LmwCQ-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240106/202401062105.Xv4LmwCQ-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401062105.Xv4LmwCQ-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

arch/arm64/kvm/sys_regs.c:2305: warning: Function parameter or member 'global' not described in 'kvm_handle_cp_64'
arch/arm64/kvm/sys_regs.c:2305: warning: Function parameter or member 'nr_global' not described in 'kvm_handle_cp_64'
arch/arm64/kvm/sys_regs.c:2305: warning: Excess function parameter 'run' description in 'kvm_handle_cp_64'
>> arch/arm64/kvm/sys_regs.c:2402: warning: Function parameter or member 'params' not described in 'kvm_handle_cp_32'
arch/arm64/kvm/sys_regs.c:2402: warning: Function parameter or member 'global' not described in 'kvm_handle_cp_32'
arch/arm64/kvm/sys_regs.c:2402: warning: Function parameter or member 'nr_global' not described in 'kvm_handle_cp_32'
arch/arm64/kvm/sys_regs.c:2402: warning: Excess function parameter 'run' description in 'kvm_handle_cp_32'


vim +2402 arch/arm64/kvm/sys_regs.c

e65197666773f3 Oliver Upton 2022-05-03 2392
62a89c44954f09 Marc Zyngier 2013-02-07 2393 /**
7769db905bd2df Shannon Zhao 2016-01-13 2394 * kvm_handle_cp_32 -- handles a mrc/mcr trap on a guest CP14/CP15 access
62a89c44954f09 Marc Zyngier 2013-02-07 2395 * @vcpu: The VCPU pointer
62a89c44954f09 Marc Zyngier 2013-02-07 2396 * @run: The kvm_run struct
62a89c44954f09 Marc Zyngier 2013-02-07 2397 */
72564016aae45f Marc Zyngier 2014-04-24 2398 static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
e65197666773f3 Oliver Upton 2022-05-03 2399 struct sys_reg_params *params,
72564016aae45f Marc Zyngier 2014-04-24 2400 const struct sys_reg_desc *global,
dcaffa7bf91157 James Morse 2020-06-22 2401 size_t nr_global)
62a89c44954f09 Marc Zyngier 2013-02-07 @2402 {
c667186f1c01ca Marc Zyngier 2017-04-27 2403 int Rt = kvm_vcpu_sys_get_rt(vcpu);
62a89c44954f09 Marc Zyngier 2013-02-07 2404
e65197666773f3 Oliver Upton 2022-05-03 2405 params->regval = vcpu_get_reg(vcpu, Rt);
62a89c44954f09 Marc Zyngier 2013-02-07 2406
e65197666773f3 Oliver Upton 2022-05-03 2407 if (emulate_cp(vcpu, params, global, nr_global)) {
e65197666773f3 Oliver Upton 2022-05-03 2408 if (!params->is_write)
e65197666773f3 Oliver Upton 2022-05-03 2409 vcpu_set_reg(vcpu, Rt, params->regval);
72564016aae45f Marc Zyngier 2014-04-24 2410 return 1;
2ec5be3dbfdcb6 Pavel Fedin 2015-12-04 2411 }
72564016aae45f Marc Zyngier 2014-04-24 2412
e65197666773f3 Oliver Upton 2022-05-03 2413 unhandled_cp_access(vcpu, params);
62a89c44954f09 Marc Zyngier 2013-02-07 2414 return 1;
62a89c44954f09 Marc Zyngier 2013-02-07 2415 }
62a89c44954f09 Marc Zyngier 2013-02-07 2416

:::::: The code at line 2402 was first introduced by commit
:::::: 62a89c44954f09072bf07a714c8f68bda14ab87e arm64: KVM: 32bit handling of coprocessor traps

:::::: TO: Marc Zyngier <marc.zyngier@xxxxxxx>
:::::: CC: Marc Zyngier <marc.zyngier@xxxxxxx>

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