kernel.git/arch/s390/kernel/setup.c, branch linux-6.10.y

s390/setup: Fix pa/va for modules under non-GPL licenses

2024-08-03T07:01:07Z

[ Upstream commit e188e5d5ffd01d484b5255b88739fcf67b300223 ] The struct vm_layout contains fields used in __pa/__va calculations. Such fundamental things have to be exported with EXPORT_SYMBOL to avoid breakages of out-of-tree modules under non-GPL licenses. Fixes: 7de0446f0b26 ("s390/boot: Make identity mapping base address explicit") Acked-by: Heiko Carstens Acked-by: Alexander Gordeev Signed-off-by: Vasily Gorbik Signed-off-by: Sasha Levin

s390/boot: Remove alt_stfle_fac_list from decompressor

2024-05-16T08:17:12Z

It is nowhere used in the decompressor, therefore remove it. Fixes: 17e89e1340a3 ("s390/facilities: move stfl information from lowcore to global data") Reviewed-by: Heiko Carstens Signed-off-by: Sven Schnelle Signed-off-by: Heiko Carstens

s390/boot: Make .amode31 section address range explicit

2024-04-17T11:38:00Z

This is a preparatory rework to allow uncoupling virtual and physical addresses spaces. Introduce .amode31 section address range AMODE31_START and AMODE31_END macros for later use. Acked-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/boot: Make identity mapping base address explicit

2024-04-17T11:38:00Z

This is a preparatory rework to allow uncoupling virtual and physical addresses spaces. Currently the identity mapping base address is implicit and is always set to zero. Make it explicit by putting into __identity_base persistent boot variable and use it in proper context - which is the value of PAGE_OFFSET. Acked-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/mm: Create virtual memory layout structure

2024-04-17T11:38:00Z

This is a preparatory rework to allow uncoupling virtual and physical addresses spaces. Put virtual memory layout information into a structure to improve code generation when accessing the structure members, which are currently only ident_map_size and __kaslr_offset. Acked-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/setup: fix virtual vs physical address confusion

2024-02-16T13:30:12Z

Fix virtual vs physical address confusion. This does not fix a bug since virtual and physical address spaces are currently the same. /proc/iomem should report the physical address ranges, so use __pa_symbol() for resource registration, similar to other architectures. Signed-off-by: Gerald Schaefer Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens

s390/fpu: remove ARCH_WANTS_DYNAMIC_TASK_STRUCT support

2023-12-11T13:33:06Z

s390 selects ARCH_WANTS_DYNAMIC_TASK_STRUCT in order to make the size of the task structure dependent on the availability of the vector facility. This doesn't make sense anymore because since many years all machines provide the vector facility. Therefore simplify the code a bit and remove s390 support for ARCH_WANTS_DYNAMIC_TASK_STRUCT. Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/nmi: consistently enable machine checks in trap_init()

2023-12-11T13:33:05Z

The kernel starts with machine checks disabled (machine check mask bit in the PSW is zero), and machine checks are enabled when trap_init() is called. The rationale is that this allows to assume that the system is initialized up to a certain point before the machine check handler may be invoked. However the implementation is incomplete: all new PSW masks in lowcore have the machine check mask bit. This means that e.g. for any early program check machine checks are enabled within the program check handler. This contradicts the whole point of enabling machine checks at a single place. Change this and initialize all new PSWs in lowcore so they have the machine check mask bit not set. Set the bit in all masks in trap_init(). This way machine check enabling is consistent. Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

Merge tag 's390-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2023-11-03T20:17:22Z

Pull s390 updates from Vasily Gorbik: - Get rid of private VM_FAULT flags - Add word-at-a-time implementation - Add DCACHE_WORD_ACCESS support - Cleanup control register handling - Disallow CPU hotplug of CPU 0 to simplify its handling complexity, following a similar restriction in x86 - Optimize pai crypto map allocation - Update the list of crypto express EP11 coprocessor operation modes - Fixes and improvements for secure guests AP pass-through - Several fixes to address incorrect page marking for address translation with the "cmma no-dat" feature, preventing potential incorrect guest TLB flushes - Fix early IPI handling - Several virtual vs physical address confusion fixes - Various small fixes and improvements all over the code * tag 's390-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (74 commits) s390/cio: replace deprecated strncpy with strscpy s390/sclp: replace deprecated strncpy with strtomem s390/cio: fix virtual vs physical address confusion s390/cio: export CMG value as decimal s390: delete the unused store_prefix() function s390/cmma: fix handling of swapper_pg_dir and invalid_pg_dir s390/cmma: fix detection of DAT pages s390/sclp: handle default case in sclp memory notifier s390/pai_crypto: remove per-cpu variable assignement in event initialization s390/pai: initialize event count once at initialization s390/pai_crypto: use PERF_ATTACH_TASK define for per task detection s390/mm: add missing arch_set_page_dat() call to gmap allocations s390/mm: add missing arch_set_page_dat() call to vmem_crst_alloc() s390/cmma: fix initial kernel address space page table walk s390/diag: add missing virt_to_phys() translation to diag224() s390/mm,fault: move VM_FAULT_ERROR handling to do_exception() s390/mm,fault: remove VM_FAULT_BADMAP and VM_FAULT_BADACCESS s390/mm,fault: remove VM_FAULT_SIGNAL s390/mm,fault: remove VM_FAULT_BADCONTEXT s390/mm,fault: simplify kfence fault handling ...

crash_core: change the prototype of function parse_crashkernel()

2023-10-04T17:41:58Z

Add two parameters 'low_size' and 'high' to function parse_crashkernel(), later crashkernel=,high|low parsing will be added. Make adjustments in all call sites of parse_crashkernel() in arch. Link: https://lkml.kernel.org/r/20230914033142.676708-3-bhe@redhat.com Signed-off-by: Baoquan He Reviewed-by: Zhen Lei Cc: Catalin Marinas Cc: Chen Jiahao Signed-off-by: Andrew Morton

kernel.git/arch/s390/kernel/setup.c, branch linux-6.10.y

s390/setup: Fix __pa/__va for modules under non-GPL licenses

s390/boot: Remove alt_stfle_fac_list from decompressor

s390/boot: Make .amode31 section address range explicit

s390/boot: Make identity mapping base address explicit

s390/mm: Create virtual memory layout structure

s390/setup: fix virtual vs physical address confusion

s390/fpu: remove ARCH_WANTS_DYNAMIC_TASK_STRUCT support

s390/nmi: consistently enable machine checks in trap_init()

Merge tag 's390-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

crash_core: change the prototype of function parse_crashkernel()

s390/setup: Fix pa/va for modules under non-GPL licenses