linux-stable.git/arch, branch v5.4.293

MIPS: cm: Fix warning if MIPS_CM is disabled

2025-05-02T05:39:30+00:00

commit b73c3ccdca95c237750c981054997c71d33e09d7 upstream.

Commit e27fbe16af5c ("MIPS: cm: Detect CM quirks from device tree")
introduced

arch/mips/include/asm/mips-cm.h:119:13: error: ‘mips_cm_update_property’
	defined but not used [-Werror=unused-function]

Fix this by making empty function implementation inline

Fixes: e27fbe16af5c ("MIPS: cm: Detect CM quirks from device tree")
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

x86/bugs: Don't fill RSB on VMEXIT with eIBRS+retpoline

2025-05-02T05:39:29+00:00

[ Upstream commit 18bae0dfec15b24ec14ca17dc18603372f5f254f ]

eIBRS protects against guest->host RSB underflow/poisoning attacks.
Adding retpoline to the mix doesn't change that.  Retpoline has a
balanced CALL/RET anyway.

So the current full RSB filling on VMEXIT with eIBRS+retpoline is
overkill.  Disable it or do the VMEXIT_LITE mitigation if needed.

Suggested-by: Pawan Gupta 
Signed-off-by: Josh Poimboeuf 
Signed-off-by: Ingo Molnar 
Reviewed-by: Pawan Gupta 
Reviewed-by: Amit Shah 
Reviewed-by: Nikolay Borisov 
Cc: Paolo Bonzini 
Cc: Vitaly Kuznetsov 
Cc: Sean Christopherson 
Cc: David Woodhouse 
Link: https://lore.kernel.org/r/84a1226e5c9e2698eae1b5ade861f1b8bf3677dc.1744148254.git.jpoimboe@kernel.org
Signed-off-by: Sasha Levin

KVM: s390: Don't use %pK through tracepoints

2025-05-02T05:39:29+00:00

[ Upstream commit 6c9567e0850be2f0f94ab64fa6512413fd1a1eb1 ]

Restricted pointers ("%pK") are not meant to be used through TP_format().
It can unintentionally expose security sensitive, raw pointer values.

Use regular pointer formatting instead.

Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/
Signed-off-by: Thomas Weißschuh 
Reviewed-by: Michael Mueller 
Link: https://lore.kernel.org/r/20250217-restricted-pointers-s390-v1-1-0e4ace75d8aa@linutronix.de
Signed-off-by: Janosch Frank 
Message-ID: <20250217-restricted-pointers-s390-v1-1-0e4ace75d8aa@linutronix.de>
Signed-off-by: Sasha Levin

parisc: PDT: Fix missing prototype warning

2025-05-02T05:39:28+00:00

[ Upstream commit b899981750dcb958ceffa4462d903963ee494aa2 ]

As reported by the kernel test robot, the following error occurs:

arch/parisc/kernel/pdt.c:65:6: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes]
      65 | void arch_report_meminfo(struct seq_file *m)
         |      ^~~~~~~~~~~~~~~~~~~

arch_report_meminfo() is declared in include/linux/proc_fs.h and only
defined when CONFIG_PROC_FS is enabled. Wrap its definition in #ifdef
CONFIG_PROC_FS to fix the -Wmissing-prototypes warning.

Reported-by: kernel test robot 
Closes: https://lore.kernel.org/oe-kbuild-all/202502082315.IPaHaTyM-lkp@intel.com/
Signed-off-by: Yu-Chun Lin 
Signed-off-by: Helge Deller 
Signed-off-by: Sasha Levin

MIPS: cm: Detect CM quirks from device tree

2025-05-02T05:39:27+00:00

[ Upstream commit e27fbe16af5cfc40639de4ced67d1a866a1953e9 ]

Some information that should be retrieved at runtime for the Coherence
Manager can be either absent or wrong. This patch allows checking if
some of this information is available from the device tree and updates
the internal variable accordingly.

For now, only the compatible string associated with the broken HCI is
being retrieved.

Signed-off-by: Gregory CLEMENT 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: ds1287: Match ds1287_set_base_clock() function types

2025-05-02T05:39:23+00:00

commit a759109b234385b74d2f5f4c86b5f59b3201ec12 upstream.

Synchronize the declaration of ds1287_set_base_clock() between
cevt-ds1287.c and ds1287.h.

Fix follow error with gcc-14 when -Werror:

arch/mips/kernel/cevt-ds1287.c:21:5: error: conflicting types for ‘ds1287_set_base_clock’; have ‘int(unsigned int)’
   21 | int ds1287_set_base_clock(unsigned int hz)
      |     ^~~~~~~~~~~~~~~~~~~~~
In file included from arch/mips/kernel/cevt-ds1287.c:13:
./arch/mips/include/asm/ds1287.h:11:13: note: previous declaration of ‘ds1287_set_base_clock’ with type ‘void(unsigned int)’
   11 | extern void ds1287_set_base_clock(unsigned int clock);
      |             ^~~~~~~~~~~~~~~~~~~~~
make[7]: *** [scripts/Makefile.build:207: arch/mips/kernel/cevt-ds1287.o] Error 1
make[6]: *** [scripts/Makefile.build:465: arch/mips/kernel] Error 2
make[6]: *** Waiting for unfinished jobs....

Signed-off-by: WangYuli 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

MIPS: cevt-ds1287: Add missing ds1287.h include

2025-05-02T05:39:23+00:00

commit f3be225f338a578851a7b607a409f476354a8deb upstream.

Address the issue of cevt-ds1287.c not including the ds1287.h header
file.

Fix follow errors with gcc-14 when -Werror:

arch/mips/kernel/cevt-ds1287.c:15:5: error: no previous prototype for ‘ds1287_timer_state’ [-Werror=missing-prototypes]
   15 | int ds1287_timer_state(void)
      |     ^~~~~~~~~~~~~~~~~~
arch/mips/kernel/cevt-ds1287.c:20:5: error: no previous prototype for ‘ds1287_set_base_clock’ [-Werror=missing-prototypes]
   20 | int ds1287_set_base_clock(unsigned int hz)
      |     ^~~~~~~~~~~~~~~~~~~~~
arch/mips/kernel/cevt-ds1287.c:103:12: error: no previous prototype for ‘ds1287_clockevent_init’ [-Werror=missing-prototypes]
  103 | int __init ds1287_clockevent_init(int irq)
      |            ^~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[7]: *** [scripts/Makefile.build:207: arch/mips/kernel/cevt-ds1287.o] Error 1
make[7]: *** Waiting for unfinished jobs....
make[6]: *** [scripts/Makefile.build:465: arch/mips/kernel] Error 2
make[6]: *** Waiting for unfinished jobs....

Signed-off-by: WangYuli 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

MIPS: dec: Declare which_prom() as static

2025-05-02T05:39:23+00:00

commit 55fa5868519bc48a7344a4c070efa2f4468f2167 upstream.

Declare which_prom() as static to suppress gcc compiler warning that
'missing-prototypes'. This function is not intended to be called
from other parts.

Fix follow error with gcc-14 when -Werror:

arch/mips/dec/prom/init.c:45:13: error: no previous prototype for ‘which_prom’ [-Werror=missing-prototypes]
   45 | void __init which_prom(s32 magic, s32 *prom_vec)
      |             ^~~~~~~~~~
cc1: all warnings being treated as errors
make[6]: *** [scripts/Makefile.build:207: arch/mips/dec/prom/init.o] Error 1
make[5]: *** [scripts/Makefile.build:465: arch/mips/dec/prom] Error 2
make[5]: *** Waiting for unfinished jobs....

Signed-off-by: WangYuli 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

powerpc/prom_init: Use -ffreestanding to avoid a reference to bcmp

2025-05-02T05:39:22+00:00

commit 8dcd71b45df34d9b903450fab147ee8c1e6c16b5 upstream.

LLVM revision r374662 gives LLVM the ability to convert certain loops
into a reference to bcmp as an optimization; this breaks
prom_init_check.sh:

    CALL    arch/powerpc/kernel/prom_init_check.sh
  Error: External symbol 'bcmp' referenced from prom_init.c
  make[2]: *** [arch/powerpc/kernel/Makefile:196: prom_init_check] Error 1

bcmp is defined in lib/string.c as a wrapper for memcmp so this could
be added to the whitelist. However, commit
450e7dd4001f ("powerpc/prom_init: don't use string functions from
lib/") copied memcmp as prom_memcmp to avoid KASAN instrumentation so
having bcmp be resolved to regular memcmp would break that assumption.
Furthermore, because the compiler is the one that inserted bcmp, we
cannot provide something like prom_bcmp.

To prevent LLVM from being clever with optimizations like this, use
-ffreestanding to tell LLVM we are not hosted so it is not free to
make transformations like this.

Reviewed-by: Nick Desaulneris 
Signed-off-by: Nathan Chancellor 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20191119045712.39633-4-natechancellor@gmail.com
Signed-off-by: Greg Kroah-Hartman

perf/x86/intel/uncore: Fix the scale of IIO free running counters on SNR

2025-05-02T05:39:21+00:00

commit 96a720db59ab330c8562b2437153faa45dac705f upstream.

There was a mistake in the SNR uncore spec. The counter increments for
every 32 bytes of data sent from the IO agent to the SOC, not 4 bytes
which was documented in the spec.

The event list has been updated:

  "EventName": "UNC_IIO_BANDWIDTH_IN.PART0_FREERUN",
  "BriefDescription": "Free running counter that increments for every 32
		       bytes of data sent from the IO agent to the SOC",

Update the scale of the IIO bandwidth in free running counters as well.

Fixes: 210cc5f9db7a ("perf/x86/intel/uncore: Add uncore support for Snow Ridge server")
Signed-off-by: Kan Liang 
Signed-off-by: Ingo Molnar 
Acked-by: Peter Zijlstra 
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250416142426.3933977-1-kan.liang@linux.intel.com
Signed-off-by: Greg Kroah-Hartman