On systems that do not support Store Data events (such as when running
as KVM guest) the following warning message appears during boot:
sclp_sd: Store Data request failed (eq=2, di=3, response=0x40f0,
flags=0x00, status=0, rc=-5)
This warning does not add any useful information since the result is
expected due to missing support for that event type.
Suppress this message by checking the associated masks of supported
events before issuing a Store Data event.
Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Make use of the popcnt instruction to provide optimized __arch_hweight*()
implementations. The generated code is shorter and avoids rather expensive
functions calls.
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Assign the output from get_lowcore() to a local variable,
so the code is easier to read.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Assign the output from get_lowcore() to a local variable,
so the code is easier to read.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Assign the output from get_lowcore() to a local variable,
so the code is easier to read.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Assign the output from get_lowcore() to a local variable,
so the code is easier to read.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Assign the output from get_lowcore() to a local variable,
so the code is easier to read.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Replace all S390_lowcore usages in arch/s390/boot by get_lowcore().
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Add a get_lowcore() function which returns the address
of lowcore (currently always NULL). This function will
be used as a replacement of the S390_lowcore macro.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
The PMU for PAI NNPA counters enforces the following restriction:
- No per-task context for PAI sampling event NNPA_ALL
- No multiple system-wide PAI sampling event NNPA_ALL
Both restrictions are removed. One or more per-task sampling events
are supported. Also one or more system-wide sampling events are
supported.
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The PMU for PAI NNPA counters enforces the following restriction:
- No per-task context for PAI NNPA counters.
This restriction is removed. One or more per-task/system-wide counting
events can now be active at the same time while one system wide
sampling event is active.
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The PMU for PAI NNPA counters enforces the following restriction:
- No system wide counting while system wide sampling is active.
This restriction is removed. One or more system wide counting events
can now be active at the same time while at most one system wide
sampling event is active.
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The PMU for PAI crypto counters enforces the following restrictions:
- No per-task context for PAI crypto sampling event CRYPTO_ALL
- No multiple system-wide PAI crypto sampling event CRYPTO_ALL
Both restrictions are removed. One or more per-task sampling events
are supported. Also one or more system-wide sampling events are
supported.
Example for per-task context of sampling event CRYPTO_ALL:
# perf record -e pai_crypto/CRYPTO_ALL/ -- true
Example for system-wide context of sampling event CRYPTO_ALL:
# perf record -e pai_crypto/CRYPTO_ALL/ -a -- sleep 4
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The PMU for PAI crypto counters enforces the following restriction:
- No per-task context for PAI crypto counters events.
This restriction is removed. One or more per-task/system-wide counting
events can now be active at the same time while at most one system
wide sampling event is active.
Example for per-task context of a PAI crypto counter event:
# perf stat -e pai_crypto/KM_AES_128/ -- true
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The PMU for PAI crypto counters enforces the following restriction:
- No system wide counting while system wide sampling is active.
This restriction is removed. One or more system wide counting events
can now be active at the same time while at most one system wide
sampling event is active.
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Let's make it clearer that we are always working on folio flags and
never page flags of tail pages by converting remaining PG_arch_1 users
that modify page->flags to modify folio->flags instead.
No functional change intended, because we would always have worked with
the head page (where page->flags corresponds to folio->flags) and never
with tail pages.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-11-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Let's also implement HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE, so we can convert
arch_make_page_accessible() to be a simple wrapper around
arch_make_folio_accessible(). Unfortunately, we cannot do that in the
header.
There are only two arch_make_page_accessible() calls remaining in gup.c.
We can now drop HAVE_ARCH_MAKE_PAGE_ACCESSIBLE completely form core-MM.
We'll handle that separately, once the s390x part landed.
Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-10-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Let's do the same as we did for uv_destroy_(folio|pte)() and
have the following variants:
(1) uv_convert_from_secure(): "low level" helper that operates on paddr
and does not mess with folios.
(2) uv_convert_from_secure_folio(): Consumes a folio to which we hold a
reference.
(3) uv_convert_from_secure_pte(): Consumes a PTE that holds a reference
through the mapping.
Unfortunately we need uv_convert_from_secure_pte(), because pfn_folio()
and friends are not available in pgtable.h.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-9-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Let's have the following variants for destroying pages:
(1) uv_destroy(): Like uv_pin_shared() and uv_convert_from_secure(),
"low level" helper that operates on paddr and doesn't mess with folios.
(2) uv_destroy_folio(): Consumes a folio to which we hold a reference.
(3) uv_destroy_pte(): Consumes a PTE that holds a reference through the
mapping.
Unfortunately we need uv_destroy_pte(), because pfn_folio() and
friends are not available in pgtable.h.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-8-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Now that make_folio_secure() may only set PG_arch_1 for small folios,
let's convert relevant remaining UV code to only work on (small) folios
and simply reject large folios early. This way, we'll never end up
touching PG_arch_1 on tail pages of a large folio in UV code.
The folio_get()/folio_put() for functions that are documented to already
hold a folio reference look weird; likely they are required to make
concurrent gmap_make_secure() back off because the caller might only hold
an implicit reference due to the page mapping. So leave that alone for now.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-5-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
While s390x makes sure to never have PMD-mapped THP in processes that use
KVM -- by remapping them using PTEs in
thp_split_walk_pmd_entry()->split_huge_pmd() -- there is still the
possibility of having PTE-mapped THPs (large folios) mapped into guest
memory.
This would happen if user space allocates memory before calling
KVM_CREATE_VM (which would call s390_enable_sie()). With upstream QEMU,
this currently doesn't happen, because guest memory is setup and
conditionally preallocated after KVM_CREATE_VM.
Could it happen with shmem/file-backed memory when another process
allocated memory in the pagecache? Likely, although currently not a
common setup.
Trying to split any PTE-mapped large folios sounds like the right and
future-proof thing to do here. So let's call split_folio() and handle the
return values accordingly.
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240508182955.358628-4-david@redhat.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Pull ata fixes from Niklas Cassel:
- Add a quirk for three different devices that have shown issues with
LPM (link power management). These devices appear to not implement
LPM properly, since we see command timeouts when enabling LPM. The
quirk disables LPM for these problematic devices. (Me)
- Do not apply the Intel PCS quirk on Alder Lake. The quirk is not
needed and was originally added by mistake when LPM support was
enabled for this AHCI controller. Enabling the quirk when not needed
causes the the controller to not be able to detect the connected
devices on some platforms.
* tag 'ata-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-core: Add ATA_HORKAGE_NOLPM for Apacer AS340
ata: libata-core: Add ATA_HORKAGE_NOLPM for AMD Radeon S3 SSD
ata: libata-core: Add ATA_HORKAGE_NOLPM for Crucial CT240BX500SSD1
ata: ahci: Do not apply Intel PCS quirk on Intel Alder Lake
Pull x86 fixes from Ingo Molnar:
"Miscellaneous topology parsing fixes:
- Fix topology parsing regression on older CPUs in the new AMD/Hygon
parser
- Fix boot crash on odd Intel Quark and similar CPUs that do not fill
out cpuinfo_x86::x86_clflush_size and zero out
cpuinfo_x86::x86_cache_alignment as a result.
Provide 32 bytes as a general fallback value.
- Fix topology enumeration on certain rare CPUs where the BIOS locks
certain CPUID leaves and the kernel unlocked them late, which broke
with the new topology parsing code. Factor out this unlocking logic
and move it earlier in the parsing sequence"
* tag 'x86-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/topology/intel: Unlock CPUID before evaluating anything
x86/cpu: Provide default cache line size if not enumerated
x86/topology/amd: Evaluate SMT in CPUID leaf 0x8000001e only on family 0x17 and greater
Pull scheduler fix from Ingo Molnar:
"Export a symbol to make life easier for instrumentation/debugging"
* tag 'sched-urgent-2024-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/x86: Export 'percpu arch_freq_scale'
Pull hardening fixes from Kees Cook:
- scsi: mpt3sas: Avoid possible run-time warning with long manufacturer
strings
- mailmap: update entry for Kees Cook
- kunit/fortify: Remove __kmalloc_node() test
* tag 'hardening-v6.10-rc2-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
kunit/fortify: Remove __kmalloc_node() test
mailmap: update entry for Kees Cook
scsi: mpt3sas: Avoid possible run-time warning with long manufacturer strings
Pull powerpc fixes from Michael Ellerman:
- Enforce full ordering for ATOMIC operations with BPF_FETCH
- Fix uaccess build errors seen with GCC 13/14
- Fix build errors on ppc32 due to ARCH_HAS_KERNEL_FPU_SUPPORT
- Drop error message from lparcfg guest name lookup
Thanks to Christophe Leroy, Guenter Roeck, Nathan Lynch, Naveen N Rao,
Puranjay Mohan, and Samuel Holland.
* tag 'powerpc-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: Limit ARCH_HAS_KERNEL_FPU_SUPPORT to PPC64
powerpc/uaccess: Use YZ asm constraint for ld
powerpc/uaccess: Fix build errors seen with GCC 13/14
powerpc/pseries/lparcfg: drop error message from guest name lookup
powerpc/bpf: enforce full ordering for ATOMIC operations with BPF_FETCH
Pull firewire fix from Takashi Sakamoto:
"After merging a commit 1fffe7a34c ("script: modpost: emit a warning
when the description is missing"), MODULE_DESCRIPTOR seems to be
mandatory for kernel modules. In FireWire subsystem, the most of
practical kernel modules have the field, while KUnit test modules do
not. A single patch is applied to fix them"
* tag 'firewire-fixes-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: add missing MODULE_DESCRIPTION() to test modules
Pull smb client fixes from Steve French:
"Two small smb3 fixes:
- Fix socket creation with sfu mount option (spotted by test generic/423)
- Minor cleanup: fix missing description in two files"
* tag '6.10-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix creating sockets when using sfu mount options
fs: smb: common: add missing MODULE_DESCRIPTION() macros
Pull Kbuild fixes from Masahiro Yamada:
- Fix a Kconfig bug regarding comparisons to 'm' or 'n'
- Replace missed $(srctree)/$(src)
- Fix unneeded kallsyms step 3
- Remove incorrect "compatible" properties from image nodes in
image.fit
- Improve gen_kheaders.sh
- Fix 'make dt_binding_check'
- Clean up unnecessary code
* tag 'kbuild-fixes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
dt-bindings: kbuild: Fix dt_binding_check on unconfigured build
kheaders: use `command -v` to test for existence of `cpio`
kheaders: explicitly define file modes for archived headers
scripts/make_fit: Drop fdt image entry compatible string
kbuild: remove a stale comment about cleaning in link-vmlinux.sh
kbuild: fix short log for AS in link-vmlinux.sh
kbuild: change scripts/mksysmap into sed script
kbuild: avoid unneeded kallsyms step 3
kbuild: scripts/gdb: Replace missed $(srctree)/$(src) w/ $(src)
kconfig: remove redundant check in expr_join_or()
kconfig: fix comparison to constant symbols, 'm', 'n'
kconfig: remove unused expr_is_no()
Pull xfs fixes from Chandan Babu:
- Fix a livelock by dropping an xfarray sortinfo folio when an error
is encountered
- During extended attribute operations, Initialize transaction
reservation computation based on attribute operation code
- Relax symbolic link's ondisk verification code to allow symbolic
links with short remote targets
- Prevent soft lockups when unmapping file ranges and also during
remapping blocks during a reflink operation
- Fix compilation warnings when XFS is built with W=1 option
* tag 'xfs-6.10-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: Add cond_resched to block unmap range and reflink remap path
xfs: don't open-code u64_to_user_ptr
xfs: allow symlinks with short remote targets
xfs: fix xfs_init_attr_trans not handling explicit operation codes
xfs: drop xfarray sortinfo folio on error
xfs: Stop using __maybe_unused in xfs_alloc.c
xfs: Clear W=1 warning in xfs_iwalk_run_callbacks()
Pull tty fix from Greg KH:
"Here is a single revert for a much-reported regression in 6.10-rc1
when it comes to a few older architectures.
Turns out that the VT ioctls don't work the same across all cpu types
because of some old compatibility requrements for stuff like alpha and
powerpc. So revert the change that attempted to have them use the
_IO() macros and go back to the known-working values instead.
This has NOT been in linux-next but has had many reports that it fixes
the issue with 6.10-rc1"
* tag 'tty-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "VT: Use macros to define ioctls"
Pull landlock fix from Mickaël Salaün:
"This fixes a wrong path walk triggered by syzkaller"
* tag 'landlock-6.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
selftests/landlock: Add layout1.refer_mount_root
landlock: Fix d_parent walk
Pull drm fixes from Dave Airlie:
"This is the weekly fixes. Lots of small fixes across the board, one
BUG_ON fix in shmem seems most important, otherwise amdgpu, i915, xe
mostly with small fixes to all the other drivers.
shmem:
- fix BUG_ON in COW handling
- warn when trying to pin imported objects
buddy:
- fix page size handling
dma-buf:
- sw-sync: Don't interfere with IRQ handling
- fix kthreads-handling error path
i915:
- fix a race in audio component by registering it later
- make DPT object unshrinkable to avoid shrinking when framebuffer
has not shrunk
- fix CCS id calculation to fix a perf regression
- fix selftest caching mode
- fix FIELD_PREP compiler warnings
- fix indefinite wait for GT wakeref release
- revert overeager multi-gt pm reference removal
xe:
- pcode polling timeout change
- fix for deadlocks for faulting VMs
- error-path lock imbalance fix
amdgpu:
- RAS fix
- fix colorspace property for MST connectors
- fix for PCIe DPM
- silence UBSAN warning
- GPUVM robustness fix
- partition fix
- drop deprecated I2C_CLASS_SPD
amdkfd:
- revert unused changes for certain 11.0.3 devices
- simplify APU VRAM handling
lima:
- fix dma_resv-related deadlock in object pin
msm:
- remove build-time dependency on Python 3.9
nouveau:
- nvif: Fix possible integer overflow
panel:
- lg-sw43408: Select DP helpers; Declare backlight ops as static
- sitronix-st7789v: Various fixes for jt240mhqs_hwt_ek_e3 panel
panfrost:
- fix dma_resv-related deadlock in object pin"
* tag 'drm-fixes-2024-06-01' of https://gitlab.freedesktop.org/drm/kernel: (35 commits)
drm/msm: remove python 3.9 dependency for compiling msm
drm/panel: sitronix-st7789v: fix display size for jt240mhqs_hwt_ek_e3 panel
drm/panel: sitronix-st7789v: tweak timing for jt240mhqs_hwt_ek_e3 panel
drm/panel: sitronix-st7789v: fix timing for jt240mhqs_hwt_ek_e3 panel
drm/amd/pm: remove deprecated I2C_CLASS_SPD support from newly added SMU_14_0_2
drm/amdgpu: Make CPX mode auto default in NPS4
drm/amdkfd: simplify APU VRAM handling
Revert "drm/amdkfd: fix gfx_target_version for certain 11.0.3 devices"
drm/amdgpu: fix dereference null return value for the function amdgpu_vm_pt_parent
drm/amdgpu: silence UBSAN warning
drm/amdgpu: Adjust logic in amdgpu_device_partner_bandwidth()
drm/i915: Fix audio component initialization
drm/i915/dpt: Make DPT object unshrinkable
drm/i915/gt: Fix CCS id's calculation for CCS mode setting
drm/panel/lg-sw43408: mark sw43408_backlight_ops as static
drm/i915/selftests: Set always_coherent to false when reading from CPU
drm/panel/lg-sw43408: select CONFIG_DRM_DISPLAY_DP_HELPER
drm/i915/guc: avoid FIELD_PREP warning
drm/i915/gt: Disarm breadcrumbs if engines are already idle
Revert "drm/i915: Remove extra multi-gt pm-references"
...
