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authorLinus Torvalds <torvalds@linux-foundation.org>2024-05-21 12:09:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-05-21 12:09:36 -0700
commit2a8120d7b4827380f30b57788ff92ec5594e2194 (patch)
tree27790b72bc2748fa28d4634edd83ae7a5cecd204 /drivers/s390/net
parent334e5639fc4e20752d46552abefc5311351e3bee (diff)
parentc1248638f8c35b74400efa7e02e78ecda23373f9 (diff)
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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() ...
Diffstat (limited to 'drivers/s390/net')
-rw-r--r--drivers/s390/net/netiucv.c20
-rw-r--r--drivers/s390/net/smsgiucv_app.c21
2 files changed, 9 insertions, 32 deletions
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
index 8852b03f943b..039e18d46f76 100644
--- a/drivers/s390/net/netiucv.c
+++ b/drivers/s390/net/netiucv.c
@@ -1696,26 +1696,14 @@ static const struct attribute_group *netiucv_attr_groups[] = {
static int netiucv_register_device(struct net_device *ndev)
{
struct netiucv_priv *priv = netdev_priv(ndev);
- struct device *dev = kzalloc(sizeof(struct device), GFP_KERNEL);
+ struct device *dev;
int ret;
IUCV_DBF_TEXT(trace, 3, __func__);
- if (dev) {
- dev_set_name(dev, "net%s", ndev->name);
- dev->bus = &iucv_bus;
- dev->parent = iucv_root;
- dev->groups = netiucv_attr_groups;
- /*
- * The release function could be called after the
- * module has been unloaded. It's _only_ task is to
- * free the struct. Therefore, we specify kfree()
- * directly here. (Probably a little bit obfuscating
- * but legitime ...).
- */
- dev->release = (void (*)(struct device *))kfree;
- dev->driver = &netiucv_driver;
- } else
+ dev = iucv_alloc_device(netiucv_attr_groups, &netiucv_driver, NULL,
+ "net%s", ndev->name);
+ if (!dev)
return -ENOMEM;
ret = device_register(dev);
diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c
index 0a263999f7ae..cc44cbb0028b 100644
--- a/drivers/s390/net/smsgiucv_app.c
+++ b/drivers/s390/net/smsgiucv_app.c
@@ -156,25 +156,14 @@ static int __init smsgiucv_app_init(void)
if (!MACHINE_IS_VM)
return -ENODEV;
- smsg_app_dev = kzalloc(sizeof(*smsg_app_dev), GFP_KERNEL);
- if (!smsg_app_dev)
- return -ENOMEM;
-
smsgiucv_drv = driver_find(SMSGIUCV_DRV_NAME, &iucv_bus);
- if (!smsgiucv_drv) {
- kfree(smsg_app_dev);
+ if (!smsgiucv_drv)
return -ENODEV;
- }
- rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT);
- if (rc) {
- kfree(smsg_app_dev);
- goto fail;
- }
- smsg_app_dev->bus = &iucv_bus;
- smsg_app_dev->parent = iucv_root;
- smsg_app_dev->release = (void (*)(struct device *)) kfree;
- smsg_app_dev->driver = smsgiucv_drv;
+ smsg_app_dev = iucv_alloc_device(NULL, smsgiucv_drv, NULL, KMSG_COMPONENT);
+ if (!smsg_app_dev)
+ return -ENOMEM;
+
rc = device_register(smsg_app_dev);
if (rc) {
put_device(smsg_app_dev);