mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-07-05 05:15:23 +02:00

Linus Torvalds 2a8120d7b4 more s390 updates for 6.10 merge window

- Switch read and write software bits for PUDs
 
 - Add missing hardware bits for PUDs and PMDs
 
 - Generate unwind information for C modules to fix GDB unwind
   error for vDSO functions
 
 - Create .build-id links for unstripped vDSO files to enable
   vDSO debugging with symbols
 
 - Use standard stack frame layout for vDSO generated stack frames
   to manually walk stack frames without DWARF information
 
 - Rework perf_callchain_user() and arch_stack_walk_user() functions
   to reduce code duplication
 
 - Skip first stack frame when walking user stack
 
 - Add basic checks to identify invalid instruction pointers when
   walking stack frames
 
 - Introduce and use struct stack_frame_vdso_wrapper within vDSO user
   wrapper code to automatically generate an asm-offset define. Also
   use STACK_FRAME_USER_OVERHEAD instead of STACK_FRAME_OVERHEAD to
   document that the code works with user space stack
 
 - Clear the backchain of the extra stack frame added by the vDSO user
   wrapper code. This allows the user stack walker to detect and skip
   the non-standard stack frame. Without this an incorrect instruction
   pointer would be added to stack traces.
 
 - Rewrite psw_idle() function in C to ease maintenance and further
   enhancements
 
 - Remove get_vtimer() function and use get_cpu_timer() instead
 
 - Mark psw variable in __load_psw_mask() as __unitialized to avoid
   superfluous clearing of PSW
 
 - Remove obsolete and superfluous comment about removed TIF_FPU flag
 
 - Replace memzero_explicit() and kfree() with kfree_sensitive() to
   fix warnings reported by Coccinelle
 
 - Wipe sensitive data and all copies of protected- or secure-keys
   from stack when an IOCTL fails
 
 - Both do_airq_interrupt() and do_io_interrupt() functions set
   CIF_NOHZ_DELAY flag. Move it in do_io_irq() to simplify the code
 
 - Provide iucv_alloc_device() and iucv_release_device() helpers,
   which can be used to deduplicate more or less identical IUCV
   device allocation and release code in four different drivers
 
 - Make use of iucv_alloc_device() and iucv_release_device()
   helpers to get rid of quite some code and also remove a
   cast to an incompatible function (clang W=1)
 
 - There is no user of iucv_root outside of the core IUCV code left.
   Therefore remove the EXPORT_SYMBOL
 
 - __apply_alternatives() contains a runtime check which verifies
   that the size of the to be patched code area is even. Convert
   this to a compile time check
 
 - Increase size of buffers for sending z/VM CP DIAGNOSE X'008'
   commands from 128 to 240
 
 - Do not accept z/VM CP DIAGNOSE X'008' commands longer than
   maximally allowed
 
 - Use correct defines IPL_BP_NVME_LEN and IPL_BP0_NVME_LEN instead
   of IPL_BP_FCP_LEN and IPL_BP0_FCP_LEN ones to initialize NVMe
   reIPL block on 'scp_data' sysfs attribute update
 
 - Initialize the correct fields of the NVMe dump block, which
   were confused with FCP fields
 
 - Refactor macros for 'scp_data' (re-)IPL sysfs attribute to
   reduce code duplication
 
 - Introduce 'scp_data' sysfs attribute for dump IPL to allow tools
   such as dumpconf passing additional kernel command line parameters
   to a stand-alone dumper
 
 - Rework the CPACF query functions to use the correct RRE or RRF
   instruction formats and set instruction register fields correctly
 
 - Instead of calling BUG() at runtime force a link error during
   compile when a unsupported opcode is used with __cpacf_query()
   or __cpacf_check_opcode() functions
 
 - Fix a crash in ap_parse_bitmap_str() function on /sys/bus/ap/apmask
   or /sys/bus/ap/aqmask sysfs file update with a relative mask value
 
 - Fix "bindings complete" udev event which should be sent once all AP
   devices have been bound to device drivers and again when unbind/bind
   actions take place and all AP devices are bound again
 
 - Facility list alt_stfle_fac_list is nowhere used in the decompressor,
   therefore remove it there
 
 - Remove custom kprobes insn slot allocator in favour of the standard
   module_alloc() one, since kernel image and module areas are located
   within 4GB
 
 - Use kvcalloc() instead of kvmalloc_array() in zcrypt driver to avoid
   calling memset() with a large byte count and get rid of the sparse
   warning as result
 -----BEGIN PGP SIGNATURE-----
 
 iI0EABYIADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCZkyx2BccYWdvcmRlZXZA
 bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8PYZAP9KxEfTyUmIh61Gx8+m3BW5dy7p
 E2Q8yotlUpGj49ul+AD8CEAyTiWR95AlMOVZZLV/0J7XIjhALvpKAGfiJWkvXgc=
 =pife
 -----END PGP SIGNATURE-----

Merge tag 's390-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Alexander Gordeev:

 - Switch read and write software bits for PUDs

 - Add missing hardware bits for PUDs and PMDs

 - Generate unwind information for C modules to fix GDB unwind error for
   vDSO functions

 - Create .build-id links for unstripped vDSO files to enable vDSO
   debugging with symbols

 - Use standard stack frame layout for vDSO generated stack frames to
   manually walk stack frames without DWARF information

 - Rework perf_callchain_user() and arch_stack_walk_user() functions to
   reduce code duplication

 - Skip first stack frame when walking user stack

 - Add basic checks to identify invalid instruction pointers when
   walking stack frames

 - Introduce and use struct stack_frame_vdso_wrapper within vDSO user
   wrapper code to automatically generate an asm-offset define. Also use
   STACK_FRAME_USER_OVERHEAD instead of STACK_FRAME_OVERHEAD to document
   that the code works with user space stack

 - Clear the backchain of the extra stack frame added by the vDSO user
   wrapper code. This allows the user stack walker to detect and skip
   the non-standard stack frame. Without this an incorrect instruction
   pointer would be added to stack traces.

 - Rewrite psw_idle() function in C to ease maintenance and further
   enhancements

 - Remove get_vtimer() function and use get_cpu_timer() instead

 - Mark psw variable in __load_psw_mask() as __unitialized to avoid
   superfluous clearing of PSW

 - Remove obsolete and superfluous comment about removed TIF_FPU flag

 - Replace memzero_explicit() and kfree() with kfree_sensitive() to fix
   warnings reported by Coccinelle

 - Wipe sensitive data and all copies of protected- or secure-keys from
   stack when an IOCTL fails

 - Both do_airq_interrupt() and do_io_interrupt() functions set
   CIF_NOHZ_DELAY flag. Move it in do_io_irq() to simplify the code

 - Provide iucv_alloc_device() and iucv_release_device() helpers, which
   can be used to deduplicate more or less identical IUCV device
   allocation and release code in four different drivers

 - Make use of iucv_alloc_device() and iucv_release_device() helpers to
   get rid of quite some code and also remove a cast to an incompatible
   function (clang W=1)

 - There is no user of iucv_root outside of the core IUCV code left.
   Therefore remove the EXPORT_SYMBOL

 - __apply_alternatives() contains a runtime check which verifies that
   the size of the to be patched code area is even. Convert this to a
   compile time check

 - Increase size of buffers for sending z/VM CP DIAGNOSE X'008' commands
   from 128 to 240

 - Do not accept z/VM CP DIAGNOSE X'008' commands longer than maximally
   allowed

 - Use correct defines IPL_BP_NVME_LEN and IPL_BP0_NVME_LEN instead of
   IPL_BP_FCP_LEN and IPL_BP0_FCP_LEN ones to initialize NVMe reIPL
   block on 'scp_data' sysfs attribute update

 - Initialize the correct fields of the NVMe dump block, which were
   confused with FCP fields

 - Refactor macros for 'scp_data' (re-)IPL sysfs attribute to reduce
   code duplication

 - Introduce 'scp_data' sysfs attribute for dump IPL to allow tools such
   as dumpconf passing additional kernel command line parameters to a
   stand-alone dumper

 - Rework the CPACF query functions to use the correct RRE or RRF
   instruction formats and set instruction register fields correctly

 - Instead of calling BUG() at runtime force a link error during compile
   when a unsupported opcode is used with __cpacf_query() or
   __cpacf_check_opcode() functions

 - Fix a crash in ap_parse_bitmap_str() function on /sys/bus/ap/apmask
   or /sys/bus/ap/aqmask sysfs file update with a relative mask value

 - Fix "bindings complete" udev event which should be sent once all AP
   devices have been bound to device drivers and again when unbind/bind
   actions take place and all AP devices are bound again

 - Facility list alt_stfle_fac_list is nowhere used in the decompressor,
   therefore remove it there

 - Remove custom kprobes insn slot allocator in favour of the standard
   module_alloc() one, since kernel image and module areas are located
   within 4GB

 - Use kvcalloc() instead of kvmalloc_array() in zcrypt driver to avoid
   calling memset() with a large byte count and get rid of the sparse
   warning as result

* tag 's390-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
  s390/zcrypt: Use kvcalloc() instead of kvmalloc_array()
  s390/kprobes: Remove custom insn slot allocator
  s390/boot: Remove alt_stfle_fac_list from decompressor
  s390/ap: Fix bind complete udev event sent after each AP bus scan
  s390/ap: Fix crash in AP internal function modify_bitmap()
  s390/cpacf: Make use of invalid opcode produce a link error
  s390/cpacf: Split and rework cpacf query functions
  s390/ipl: Introduce sysfs attribute 'scp_data' for dump ipl
  s390/ipl: Introduce macros for (re)ipl sysfs attribute 'scp_data'
  s390/ipl: Fix incorrect initialization of nvme dump block
  s390/ipl: Fix incorrect initialization of len fields in nvme reipl block
  s390/ipl: Do not accept z/VM CP diag X'008' cmds longer than max length
  s390/ipl: Fix size of vmcmd buffers for sending z/VM CP diag X'008' cmds
  s390/alternatives: Convert runtime sanity check into compile time check
  s390/iucv: Unexport iucv_root
  tty: hvc-iucv: Make use of iucv_alloc_device()
  s390/smsgiucv_app: Make use of iucv_alloc_device()
  s390/netiucv: Make use of iucv_alloc_device()
  s390/vmlogrdr: Make use of iucv_alloc_device()
  s390/iucv: Provide iucv_alloc_device() / iucv_release_device()
  ...

2024-05-21 12:09:36 -07:00

2.1 KiB

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SPDX-License-Identifier: GPL-2.0

List of files in the vdso

Include the generic Makefile to check the built vdso.

include $(srctree)/lib/vdso/Makefile obj-vdso32 = vdso_user_wrapper-32.o note-32.o

Build rules

targets := $(obj-vdso32) vdso32.so vdso32.so.dbg obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))

KBUILD_AFLAGS += -DBUILD_VDSO KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING

KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS)) KBUILD_AFLAGS_32 += -m31 -s

KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_32 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -fasynchronous-unwind-tables

LDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1
--hash-style=both --build-id=sha1 -melf_s390 -T

$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)

obj-y += vdso32_wrapper.o targets += vdso32.lds CPPFLAGS_vdso32.lds += -P -C -U$(ARCH)

Force dependency (incbin is bad)

$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so

quiet_cmd_vdso_and_check = VDSO $@ cmd_vdso_and_check = $(cmd_ld); $(cmd_vdso_check)

$(obj)/vdso32.so.dbg: $(obj)/vdso32.lds $(obj-vdso32) FORCE $(call if_changed,vdso_and_check)

strip rule for the .so file

$(obj)/%.so: OBJCOPYFLAGS := -S $(obj)/%.so: $(obj)/%.so.dbg FORCE $(call if_changed,objcopy)

$(obj-vdso32): %-32.o: %.S FORCE $(call if_changed_dep,vdso32as)

actual build commands

quiet_cmd_vdso32as = VDSO32A $@ cmd_vdso32as = $(CC) $(a_flags) -c -o $@ $< quiet_cmd_vdso32cc = VDSO32C $@ cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $<

Generate VDSO offsets using helper script

gen-vdsosym := $(src)/gen_vdso_offsets.sh quiet_cmd_vdsosym = VDSOSYM $@ cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@

include/generated/vdso32-offsets.h: $(obj)/vdso32.so.dbg FORCE $(call if_changed,vdsosym)

2.1 KiB Raw Blame History