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s390 fixes for 6.5-rc5

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- Split kernel large page mappings into 4k mappings in case debug
   pagealloc is enabled again. This got by accident removed with
   commit bb1520d581a3 ("s390/mm: start kernel with DAT enabled")
 
 - Fix error handling in KVM's sthyi handling
 
 - Add missing include to s390's uapi ptrace.h
 
 - Update defconfigs
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Merge tag 's390-6.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Heiko Carstens:

 - Split kernel large page mappings into 4k mappings in case debug
   pagealloc is enabled again. This got accidentally removed by commit
   bb1520d581a3 ("s390/mm: start kernel with DAT enabled")

 - Fix error handling in KVM's sthyi handling

 - Add missing include to s390's uapi ptrace.h

 - Update defconfigs

* tag 's390-6.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/ptrace: add missing linux/const.h include
  KVM: s390: fix sthyi error handling
  s390: update defconfigs
  s390/vmem: split pages when debug pagealloc is enabled
This commit is contained in:
Linus Torvalds 2023-08-03 09:06:38 -07:00
commit 5e0ba14595
7 changed files with 24 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/s390/configs/debug_defconfig
View File

@ -116,7 +116,6 @@ CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
CONFIG_XFRM_USER=m
CONFIG_NET_KEY=m
CONFIG_NET_TC_SKB_EXT=y
CONFIG_SMC=m
CONFIG_SMC_DIAG=m
CONFIG_INET=y
@ -193,6 +192,7 @@ CONFIG_NFT_REJECT=m
CONFIG_NFT_COMPAT=m
CONFIG_NFT_HASH=m
CONFIG_NFT_FIB_INET=m
CONFIG_NETFILTER_XTABLES_COMPAT=y
CONFIG_NETFILTER_XT_SET=m
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@ -379,6 +379,7 @@ CONFIG_NET_ACT_SIMP=m
CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
CONFIG_NET_ACT_GATE=m
CONFIG_NET_TC_SKB_EXT=y
CONFIG_DNS_RESOLVER=y
CONFIG_OPENVSWITCH=m
CONFIG_VSOCKETS=m
@ -395,6 +396,7 @@ CONFIG_HOTPLUG_PCI=y
CONFIG_HOTPLUG_PCI_S390=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_SAFE=y
# CONFIG_FW_LOADER is not set
CONFIG_CONNECTOR=y
CONFIG_ZRAM=y
CONFIG_BLK_DEV_LOOP=m
@ -502,7 +504,6 @@ CONFIG_NLMON=m
# CONFIG_NET_VENDOR_GOOGLE is not set
# CONFIG_NET_VENDOR_HUAWEI is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_WANGXUN is not set
# CONFIG_NET_VENDOR_LITEX is not set
# CONFIG_NET_VENDOR_MARVELL is not set
CONFIG_MLX4_EN=m
@ -542,6 +543,7 @@ CONFIG_MLX5_CORE_EN=y
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VERTEXCOM is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WANGXUN is not set
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_NET_VENDOR_XILINX is not set
CONFIG_PPP=m
@ -646,7 +648,6 @@ CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_INODE64=y
CONFIG_HUGETLBFS=y
CONFIG_CONFIGFS_FS=m
CONFIG_ECRYPT_FS=m
CONFIG_CRAMFS=m
CONFIG_SQUASHFS=m
@ -690,7 +691,6 @@ CONFIG_HARDENED_USERCOPY=y
CONFIG_FORTIFY_SOURCE=y
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_LOCKDOWN_LSM=y
CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y
CONFIG_SECURITY_LANDLOCK=y
@ -744,7 +744,6 @@ CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_SHA3=m
CONFIG_CRYPTO_SM3_GENERIC=m
CONFIG_CRYPTO_VMAC=m
CONFIG_CRYPTO_WP512=m
@ -844,6 +843,7 @@ CONFIG_PREEMPT_TRACER=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_USER_EVENTS=y
CONFIG_HIST_TRIGGERS=y
CONFIG_FTRACE_STARTUP_TEST=y
# CONFIG_EVENT_TRACE_STARTUP_TEST is not set
@ -866,6 +866,7 @@ CONFIG_FAIL_MAKE_REQUEST=y
CONFIG_FAIL_IO_TIMEOUT=y
CONFIG_FAIL_FUTEX=y
CONFIG_FAULT_INJECTION_DEBUG_FS=y
CONFIG_FAULT_INJECTION_CONFIGFS=y
CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
CONFIG_LKDTM=m
CONFIG_TEST_MIN_HEAP=y

9
arch/s390/configs/defconfig
View File

@ -107,7 +107,6 @@ CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
CONFIG_XFRM_USER=m
CONFIG_NET_KEY=m
CONFIG_NET_TC_SKB_EXT=y
CONFIG_SMC=m
CONFIG_SMC_DIAG=m
CONFIG_INET=y
@ -184,6 +183,7 @@ CONFIG_NFT_REJECT=m
CONFIG_NFT_COMPAT=m
CONFIG_NFT_HASH=m
CONFIG_NFT_FIB_INET=m
CONFIG_NETFILTER_XTABLES_COMPAT=y
CONFIG_NETFILTER_XT_SET=m
CONFIG_NETFILTER_XT_TARGET_AUDIT=m
CONFIG_NETFILTER_XT_TARGET_CHECKSUM=m
@ -369,6 +369,7 @@ CONFIG_NET_ACT_SIMP=m
CONFIG_NET_ACT_SKBEDIT=m
CONFIG_NET_ACT_CSUM=m
CONFIG_NET_ACT_GATE=m
CONFIG_NET_TC_SKB_EXT=y
CONFIG_DNS_RESOLVER=y
CONFIG_OPENVSWITCH=m
CONFIG_VSOCKETS=m
@ -385,6 +386,7 @@ CONFIG_HOTPLUG_PCI_S390=y
CONFIG_UEVENT_HELPER=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_SAFE=y
# CONFIG_FW_LOADER is not set
CONFIG_CONNECTOR=y
CONFIG_ZRAM=y
CONFIG_BLK_DEV_LOOP=m
@ -492,7 +494,6 @@ CONFIG_NLMON=m
# CONFIG_NET_VENDOR_GOOGLE is not set
# CONFIG_NET_VENDOR_HUAWEI is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_WANGXUN is not set
# CONFIG_NET_VENDOR_LITEX is not set
# CONFIG_NET_VENDOR_MARVELL is not set
CONFIG_MLX4_EN=m
@ -532,6 +533,7 @@ CONFIG_MLX5_CORE_EN=y
# CONFIG_NET_VENDOR_TI is not set
# CONFIG_NET_VENDOR_VERTEXCOM is not set
# CONFIG_NET_VENDOR_VIA is not set
# CONFIG_NET_VENDOR_WANGXUN is not set
# CONFIG_NET_VENDOR_WIZNET is not set
# CONFIG_NET_VENDOR_XILINX is not set
CONFIG_PPP=m
@ -673,7 +675,6 @@ CONFIG_SECURITY=y
CONFIG_SECURITY_NETWORK=y
CONFIG_SECURITY_SELINUX=y
CONFIG_SECURITY_SELINUX_BOOTPARAM=y
CONFIG_SECURITY_SELINUX_DISABLE=y
CONFIG_SECURITY_LOCKDOWN_LSM=y
CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y
CONFIG_SECURITY_LANDLOCK=y
@ -729,7 +730,6 @@ CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_SHA3=m
CONFIG_CRYPTO_SM3_GENERIC=m
CONFIG_CRYPTO_VMAC=m
CONFIG_CRYPTO_WP512=m
@ -793,6 +793,7 @@ CONFIG_STACK_TRACER=y
CONFIG_SCHED_TRACER=y
CONFIG_FTRACE_SYSCALLS=y
CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_USER_EVENTS=y
CONFIG_HIST_TRIGGERS=y
CONFIG_SAMPLES=y
CONFIG_SAMPLE_TRACE_PRINTK=m

1
arch/s390/configs/zfcpdump_defconfig
View File

@ -53,7 +53,6 @@ CONFIG_ZFCP=y
# CONFIG_HVC_IUCV is not set
# CONFIG_HW_RANDOM_S390 is not set
# CONFIG_HMC_DRV is not set
# CONFIG_S390_UV_UAPI is not set
# CONFIG_S390_TAPE is not set
# CONFIG_VMCP is not set
# CONFIG_MONWRITER is not set

2
arch/s390/include/uapi/asm/ptrace.h
View File

@ -8,6 +8,8 @@
#ifndef _UAPI_S390_PTRACE_H
#define _UAPI_S390_PTRACE_H
#include <linux/const.h>
/*
* Offsets in the user_regs_struct. They are used for the ptrace
* system call and in entry.S

6
arch/s390/kernel/sthyi.c
View File

@ -459,9 +459,9 @@ static int sthyi_update_cache(u64 *rc)
*
* Fills the destination with system information returned by the STHYI
* instruction. The data is generated by emulation or execution of STHYI,
* if available. The return value is the condition code that would be
* returned, the rc parameter is the return code which is passed in
* register R2 + 1.
* if available. The return value is either a negative error value or
* the condition code that would be returned, the rc parameter is the
* return code which is passed in register R2 + 1.
*/
int sthyi_fill(void *dst, u64 *rc)
{

9
arch/s390/kvm/intercept.c
View File

@ -389,8 +389,8 @@ static int handle_partial_execution(struct kvm_vcpu *vcpu)
*/
int handle_sthyi(struct kvm_vcpu *vcpu)
{
int reg1, reg2, r = 0;
u64 code, addr, cc = 0, rc = 0;
int reg1, reg2, cc = 0, r = 0;
u64 code, addr, rc = 0;
struct sthyi_sctns *sctns = NULL;
if (!test_kvm_facility(vcpu->kvm, 74))
@ -421,7 +421,10 @@ int handle_sthyi(struct kvm_vcpu *vcpu)
return -ENOMEM;
cc = sthyi_fill(sctns, &rc);
if (cc < 0) {
free_page((unsigned long)sctns);
return cc;
}
out:
if (!cc) {
if (kvm_s390_pv_cpu_is_protected(vcpu)) {

2
arch/s390/mm/vmem.c
View File

@ -763,6 +763,8 @@ void __init vmem_map_init(void)
if (static_key_enabled(&cpu_has_bear))
set_memory_nx(0, 1);
set_memory_nx(PAGE_SIZE, 1);
if (debug_pagealloc_enabled())
set_memory_4k(0, ident_map_size >> PAGE_SHIFT);
pr_info("Write protected kernel read-only data: %luk\n",
(unsigned long)(__end_rodata - _stext) >> 10);