tree: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git topic/ppc-kvm head: 51696f39cbee5bb684e7959c0c98b5f54548aa34 commit: 2ce008c8b25467ceacf45bcf0e183d660edb82f2 [26/41] KVM: PPC: Book3S HV: Remove unused nested HV tests in XICS emulation config: powerpc-allyesconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=2ce008c8b25467ceacf45bcf0e183d660edb82f2 git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git git fetch --no-tags powerpc topic/ppc-kvm git checkout 2ce008c8b25467ceacf45bcf0e183d660edb82f2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
sparse warnings: (new ones prefixed by >>)
arch/powerpc/kvm/book3s_hv_builtin.c:417:41: sparse: sparse: incorrect type
in argument 1 (different base types) @@ expected unsigned int [usertype]
*out_xirr @@ got restricted __be32 * @@
arch/powerpc/kvm/book3s_hv_builtin.c:417:41: sparse: expected unsigned
int [usertype] *out_xirr
arch/powerpc/kvm/book3s_hv_builtin.c:417:41: sparse: got restricted
__be32 *
>> arch/powerpc/kvm/book3s_hv_builtin.c:419:22: sparse: sparse: incorrect type
>> in assignment (different base types) @@ expected restricted __be32
>> [addressable] [usertype] xirr @@ got unsigned int @@
arch/powerpc/kvm/book3s_hv_builtin.c:419:22: sparse: expected restricted
__be32 [addressable] [usertype] xirr
arch/powerpc/kvm/book3s_hv_builtin.c:419:22: sparse: got unsigned int
>> arch/powerpc/kvm/book3s_hv_builtin.c:450:41: sparse: sparse: incorrect type
>> in argument 1 (different base types) @@ expected unsigned int [usertype]
>> val @@ got restricted __be32 [addressable] [usertype] xirr @@
arch/powerpc/kvm/book3s_hv_builtin.c:450:41: sparse: expected unsigned
int [usertype] val
arch/powerpc/kvm/book3s_hv_builtin.c:450:41: sparse: got restricted
__be32 [addressable] [usertype] xirr
arch/powerpc/kvm/book3s_hv_builtin.c: note: in included file:
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted
__be64
arch/powerpc/include/asm/kvm_ppc.h:966:1: sparse: sparse: cast to restricted
__le64
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: sparse: incorrect type in
assignment (different base types) @@ expected unsigned long long [usertype]
srr0 @@ got restricted __be64 [usertype] @@
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: expected unsigned long
long [usertype] srr0
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: got restricted __be64
[usertype]
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: sparse: incorrect type in
assignment (different base types) @@ expected unsigned long long [usertype]
srr0 @@ got restricted __le64 [usertype] @@
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: expected unsigned long
long [usertype] srr0
arch/powerpc/include/asm/kvm_ppc.h:962:1: sparse: got restricted __le64
[usertype]
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: incorrect type in
assignment (different base types) @@ expected unsigned long long [usertype]
srr1 @@ got restricted __be64 [usertype] @@
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: expected unsigned long
long [usertype] srr1
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: got restricted __be64
[usertype]
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: sparse: incorrect type in
assignment (different base types) @@ expected unsigned long long [usertype]
srr1 @@ got restricted __le64 [usertype] @@
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: expected unsigned long
long [usertype] srr1
arch/powerpc/include/asm/kvm_ppc.h:963:1: sparse: got restricted __le64
[usertype]
vim +419 arch/powerpc/kvm/book3s_hv_builtin.c
f725758b899f11 Paul Mackerras 2016-11-18 395
f725758b899f11 Paul Mackerras 2016-11-18 396 static long
kvmppc_read_one_intr(bool *again)
37f55d30df2eef Suresh Warrier 2016-08-19 397 {
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 398 void __iomem *xics_phys;
37f55d30df2eef Suresh Warrier 2016-08-19 399 u32 h_xirr;
37f55d30df2eef Suresh Warrier 2016-08-19 400 __be32 xirr;
37f55d30df2eef Suresh Warrier 2016-08-19 401 u32 xisr;
37f55d30df2eef Suresh Warrier 2016-08-19 402 u8 host_ipi;
f725758b899f11 Paul Mackerras 2016-11-18 403 int64_t rc;
37f55d30df2eef Suresh Warrier 2016-08-19 404
5af50993850a48 Benjamin Herrenschmidt 2017-04-05 405 if (xive_enabled())
5af50993850a48 Benjamin Herrenschmidt 2017-04-05 406 return 1;
5af50993850a48 Benjamin Herrenschmidt 2017-04-05 407
37f55d30df2eef Suresh Warrier 2016-08-19 408 /* see if a host IPI is
pending */
37f55d30df2eef Suresh Warrier 2016-08-19 409 host_ipi =
local_paca->kvm_hstate.host_ipi;
37f55d30df2eef Suresh Warrier 2016-08-19 410 if (host_ipi)
37f55d30df2eef Suresh Warrier 2016-08-19 411 return 1;
37f55d30df2eef Suresh Warrier 2016-08-19 412
37f55d30df2eef Suresh Warrier 2016-08-19 413 /* Now read the
interrupt from the ICP */
37f55d30df2eef Suresh Warrier 2016-08-19 414 xics_phys =
local_paca->kvm_hstate.xics_phys;
53af3ba2e8195f Paul Mackerras 2017-01-30 415 rc = 0;
ab9bad0ead9ab1 Benjamin Herrenschmidt 2017-02-07 416 if (!xics_phys)
53af3ba2e8195f Paul Mackerras 2017-01-30 417 rc =
opal_int_get_xirr(&xirr, false);
53af3ba2e8195f Paul Mackerras 2017-01-30 418 else
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 @419 xirr =
__raw_rm_readl(xics_phys + XICS_XIRR);
f725758b899f11 Paul Mackerras 2016-11-18 420 if (rc < 0)
37f55d30df2eef Suresh Warrier 2016-08-19 421 return 1;
37f55d30df2eef Suresh Warrier 2016-08-19 422
37f55d30df2eef Suresh Warrier 2016-08-19 423 /*
37f55d30df2eef Suresh Warrier 2016-08-19 424 * Save XIRR for later.
Since we get control in reverse endian
37f55d30df2eef Suresh Warrier 2016-08-19 425 * on LE systems, save
it byte reversed and fetch it back in
37f55d30df2eef Suresh Warrier 2016-08-19 426 * host endian. Note
that xirr is the value read from the
37f55d30df2eef Suresh Warrier 2016-08-19 427 * XIRR register, while
h_xirr is the host endian version.
37f55d30df2eef Suresh Warrier 2016-08-19 428 */
37f55d30df2eef Suresh Warrier 2016-08-19 429 h_xirr =
be32_to_cpu(xirr);
37f55d30df2eef Suresh Warrier 2016-08-19 430
local_paca->kvm_hstate.saved_xirr = h_xirr;
37f55d30df2eef Suresh Warrier 2016-08-19 431 xisr = h_xirr &
0xffffff;
37f55d30df2eef Suresh Warrier 2016-08-19 432 /*
37f55d30df2eef Suresh Warrier 2016-08-19 433 * Ensure that the
store/load complete to guarantee all side
37f55d30df2eef Suresh Warrier 2016-08-19 434 * effects of loading
from XIRR has completed
37f55d30df2eef Suresh Warrier 2016-08-19 435 */
37f55d30df2eef Suresh Warrier 2016-08-19 436 smp_mb();
37f55d30df2eef Suresh Warrier 2016-08-19 437
37f55d30df2eef Suresh Warrier 2016-08-19 438 /* if nothing pending
in the ICP */
37f55d30df2eef Suresh Warrier 2016-08-19 439 if (!xisr)
37f55d30df2eef Suresh Warrier 2016-08-19 440 return 0;
37f55d30df2eef Suresh Warrier 2016-08-19 441
37f55d30df2eef Suresh Warrier 2016-08-19 442 /* We found something
in the ICP...
37f55d30df2eef Suresh Warrier 2016-08-19 443 *
37f55d30df2eef Suresh Warrier 2016-08-19 444 * If it is an IPI,
clear the MFRR and EOI it.
37f55d30df2eef Suresh Warrier 2016-08-19 445 */
37f55d30df2eef Suresh Warrier 2016-08-19 446 if (xisr == XICS_IPI) {
53af3ba2e8195f Paul Mackerras 2017-01-30 447 rc = 0;
2ce008c8b25467 Nicholas Piggin 2021-05-28 448 if (xics_phys) {
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 449
__raw_rm_writeb(0xff, xics_phys + XICS_MFRR);
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 @450
__raw_rm_writel(xirr, xics_phys + XICS_XIRR);
f725758b899f11 Paul Mackerras 2016-11-18 451 } else {
ab9bad0ead9ab1 Benjamin Herrenschmidt 2017-02-07 452
opal_int_set_mfrr(hard_smp_processor_id(), 0xff);
ab9bad0ead9ab1 Benjamin Herrenschmidt 2017-02-07 453 rc =
opal_int_eoi(h_xirr);
53af3ba2e8195f Paul Mackerras 2017-01-30 454 }
f725758b899f11 Paul Mackerras 2016-11-18 455 /* If rc > 0,
there is another interrupt pending */
f725758b899f11 Paul Mackerras 2016-11-18 456 *again = rc > 0;
f725758b899f11 Paul Mackerras 2016-11-18 457
37f55d30df2eef Suresh Warrier 2016-08-19 458 /*
37f55d30df2eef Suresh Warrier 2016-08-19 459 * Need to
ensure side effects of above stores
37f55d30df2eef Suresh Warrier 2016-08-19 460 * complete
before proceeding.
37f55d30df2eef Suresh Warrier 2016-08-19 461 */
37f55d30df2eef Suresh Warrier 2016-08-19 462 smp_mb();
37f55d30df2eef Suresh Warrier 2016-08-19 463
37f55d30df2eef Suresh Warrier 2016-08-19 464 /*
37f55d30df2eef Suresh Warrier 2016-08-19 465 * We need to
re-check host IPI now in case it got set in the
37f55d30df2eef Suresh Warrier 2016-08-19 466 * meantime. If
it's clear, we bounce the interrupt to the
37f55d30df2eef Suresh Warrier 2016-08-19 467 * guest
37f55d30df2eef Suresh Warrier 2016-08-19 468 */
37f55d30df2eef Suresh Warrier 2016-08-19 469 host_ipi =
local_paca->kvm_hstate.host_ipi;
37f55d30df2eef Suresh Warrier 2016-08-19 470 if
(unlikely(host_ipi != 0)) {
37f55d30df2eef Suresh Warrier 2016-08-19 471 /* We
raced with the host,
37f55d30df2eef Suresh Warrier 2016-08-19 472 * we
need to resend that IPI, bummer
37f55d30df2eef Suresh Warrier 2016-08-19 473 */
2ce008c8b25467 Nicholas Piggin 2021-05-28 474 if
(xics_phys)
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 475
__raw_rm_writeb(IPI_PRIORITY,
d381d7caf812f7 Benjamin Herrenschmidt 2017-04-05 476
xics_phys + XICS_MFRR);
f725758b899f11 Paul Mackerras 2016-11-18 477 else
ab9bad0ead9ab1 Benjamin Herrenschmidt 2017-02-07 478
opal_int_set_mfrr(hard_smp_processor_id(),
f725758b899f11 Paul Mackerras 2016-11-18 479
IPI_PRIORITY);
37f55d30df2eef Suresh Warrier 2016-08-19 480 /* Let
side effects complete */
37f55d30df2eef Suresh Warrier 2016-08-19 481
smp_mb();
37f55d30df2eef Suresh Warrier 2016-08-19 482 return
1;
37f55d30df2eef Suresh Warrier 2016-08-19 483 }
37f55d30df2eef Suresh Warrier 2016-08-19 484
37f55d30df2eef Suresh Warrier 2016-08-19 485 /* OK, it's an
IPI for us */
37f55d30df2eef Suresh Warrier 2016-08-19 486
local_paca->kvm_hstate.saved_xirr = 0;
37f55d30df2eef Suresh Warrier 2016-08-19 487 return -1;
37f55d30df2eef Suresh Warrier 2016-08-19 488 }
37f55d30df2eef Suresh Warrier 2016-08-19 489
f725758b899f11 Paul Mackerras 2016-11-18 490 return
kvmppc_check_passthru(xisr, xirr, again);
37f55d30df2eef Suresh Warrier 2016-08-19 491 }
5af50993850a48 Benjamin Herrenschmidt 2017-04-05 492
:::::: The code at line 419 was first introduced by commit
:::::: d381d7caf812f7aa9f05cfeb858c9004ac654412 powerpc: Consolidate variants
of real-mode MMIOs
:::::: TO: Benjamin Herrenschmidt <b...@kernel.crashing.org>
:::::: CC: Michael Ellerman <m...@ellerman.id.au>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
