Re: [PATCH V14] mm/debug: Add tests validating architecture page table helpers

[Anshuman Khandual]

On 02/17/2020 08:47 AM, Anshuman Khandual wrote:
> This adds a test validation for architecture exported page table helpers.
> Patch adds basic transformation tests at various levels of the page table.
> 
> This test was originally suggested by Catalin during arm64 THP migration
> RFC discussion earlier. Going forward it can include more specific tests
> with respect to various generic MM functions like THP, HugeTLB etc and
> platform specific tests.
> 
> https://lore.kernel.org/linux-mm/20190628102003.ga56...@arrakis.emea.arm.com/
> 
> Needs to be applied on linux V5.6-rc2
> 
> Changes in V14:
> 
> - Disabled DEBUG_VM_PGFLAGS for IA64 and ARM (32 Bit) per Andrew and 
> Christophe
> - Updated DEBUG_VM_PGFLAGS documentation wrt EXPERT and disabled platforms
> - Updated RANDOM_[OR|NZ]VALUE open encodings with GENMASK() per Catalin
> - Updated s390 constraint bits from 12 to 4 (S390_MASK_BITS) per Gerald
> - Updated in-code documentation for RANDOM_ORVALUE per Gerald
> - Updated pxx_basic_tests() to use invert functions first per Catalin
> - Dropped ARCH_HAS_4LEVEL_HACK check from pud_basic_tests()
> - Replaced __ARCH_HAS_[4|5]LEVEL_HACK with __PAGETABLE_[PUD|P4D]_FOLDED per 
> Catalin
> - Trimmed the CC list on the commit message per Catalin

Hello Andrew,

As there are no further comments on this patch from last week, wondering
if you would possibly consider this patch. But if you feel there is still
something which need to be taken care here, please do let me know.

Thank you.

- Anshuman

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Re: switching ARC to 64-bit time_t (Re: [RFC v6 07/23] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64)

[Viresh Kumar]

On 20-02-20, 15:44, Arnd Bergmann wrote:
> On Thu, Feb 20, 2020 at 2:15 PM Lukasz Majewski  wrote:
> > > On Thu, Feb 20, 2020 at 10:37 AM Lukasz Majewski 
> > > > > On Thu, Feb 20, 2020 at 12:11 AM Lukasz Majewski 

> > > There is also some work
> > > in Linaro to ensure that LTP tests the low-level syscall interfaces
> > > in both the time32 and time64 variants.
> >
> > Interesting. Is this work now publicly available?
> 
> I think this is currently in the planning stage, but once patches
> are available, they would be posted to the ltp mailing list. Viresh
> should have more details on this.

What you said is correct Arnd. It is in very early stage of planning
right now, no guarantees on when will we start working on it as of
now.

-- 
viresh

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kisskb: OK linux-next/axs103_smp_defconfig/arcv2 Mon Feb 24, 18:06

[noreply]

OK linux-next/axs103_smp_defconfig/arcv2 Mon Feb 24, 18:06

http://kisskb.ellerman.id.au/kisskb/buildresult/14149944/

Commit:   Add linux-next specific files for 20200221
  bee46b309a13ca158c99c325d0408fb2f0db207f
Compiler: arc-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 6.2.1 
20160824 / GNU ld (GNU Binutils) 2.27.51.20160928

Possible errors
---

 #define KERN_ERR KERN_SOH "3" /* error conditions */
 #define KERN_ERR KERN_SOH "3" /* error conditions */
 #define KERN_ERR KERN_SOH "3" /* error conditions */
 #define KERN_ERR KERN_SOH "3" /* error conditions */

Possible warnings (113)
--

init/main.c:563:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
init/main.c:567:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
init/main.c:1034:37: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type '__kernel_size_t {aka unsigned int}' [-Wformat=]
init/main.c:1232:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
include/linux/kernel.h:835:29: warning: comparison of distinct pointer types 
lacks a cast
mm/percpu.c:1305:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:1320:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:1327:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:1333:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:1587:17: warning: format '%zu' expects argument of type 'size_t', 
but argument 5 has type 'unsigned int' [-Wformat=]
mm/percpu.c:1587:17: warning: format '%zu' expects argument of type 'size_t', 
but argument 6 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 2 has type 'unsigned int' [-Wformat=]
 #define KERN_WARNING KERN_SOH "4" /* warning conditions */
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 3 has type 'unsigned int' [-Wformat=]
 #define KERN_WARNING KERN_SOH "4" /* warning conditions */
mm/percpu.c:2160:27: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2160:32: warning: format '%zu' expects argument of type 'size_t', 
but argument 4 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2160:37: warning: format '%zu' expects argument of type 'size_t', 
but argument 5 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2160:42: warning: format '%zu' expects argument of type 'size_t', 
but argument 6 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2160:52: warning: format '%zu' expects argument of type 'size_t', 
but argument 7 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2160:56: warning: format '%zu' expects argument of type 'size_t', 
but argument 8 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2291:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2297:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2303:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
mm/percpu.c:2309:35: warning: format '%zu' expects argument of type 'size_t', 
but argument 3 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 2 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 3 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 4 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 5 has type 'unsigned int' [-Wformat=]
include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of 
type 'size_t', but argument 6 has typ

kisskb: OK linux-next/axs101_defconfig/arcompact Mon Feb 24, 18:09

[noreply]

OK linux-next/axs101_defconfig/arcompact Mon Feb 24, 18:09

http://kisskb.ellerman.id.au/kisskb/buildresult/14149945/

Commit:   Add linux-next specific files for 20200221
  bee46b309a13ca158c99c325d0408fb2f0db207f
Compiler: arc-buildroot-linux-uclibc-gcc (Buildroot 2015.08.1) 4.8.4 / GNU ld 
(GNU Binutils) 2.23.2

No errors found in log

Possible warnings (3)
--

net/ipv4/tcp_input.c:4398:49: warning: array subscript is above array bounds 
[-Warray-bounds]
drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: missing braces around 
initializer [-Wmissing-braces]
drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: (near initialization for 
'desc.ident') [-Wmissing-braces]


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