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-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/crypto/aes_s390.c2
-rw-r--r--arch/s390/include/asm/preempt.h2
-rw-r--r--arch/s390/kernel/ftrace.c13
-rw-r--r--arch/s390/kernel/machine_kexec_file.c10
-rw-r--r--arch/s390/kernel/perf_cpum_cf.c2
-rw-r--r--arch/s390/kvm/kvm-s390.c35
-rw-r--r--arch/s390/mm/dump_pagetables.c17
-rw-r--r--arch/s390/mm/init.c4
-rw-r--r--arch/s390/mm/kasan_init.c33
-rw-r--r--arch/s390/mm/pgalloc.c3
-rw-r--r--arch/s390/net/bpf_jit_comp.c12
-rw-r--r--arch/s390/pci/pci_dma.c20
13 files changed, 76 insertions, 79 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 5173366af8f3..21d271d04ca6 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -73,7 +73,6 @@ config S390
select ARCH_HAS_KCOV
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SET_MEMORY
- select ARCH_HAS_SG_CHAIN
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
@@ -140,7 +139,6 @@ config S390
select HAVE_COPY_THREAD_TLS
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_CONTIGUOUS
- select DMA_DIRECT_OPS
select HAVE_DYNAMIC_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_EFFICIENT_UNALIGNED_ACCESS
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 812d9498d97b..dd456725189f 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -137,7 +137,7 @@ static int fallback_init_cip(struct crypto_tfm *tfm)
struct s390_aes_ctx *sctx = crypto_tfm_ctx(tfm);
sctx->fallback.cip = crypto_alloc_cipher(name, 0,
- CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
+ CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(sctx->fallback.cip)) {
pr_err("Allocating AES fallback algorithm %s failed\n",
diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h
index 23a14d187fb1..b5ea9e14c017 100644
--- a/arch/s390/include/asm/preempt.h
+++ b/arch/s390/include/asm/preempt.h
@@ -8,6 +8,8 @@
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+/* We use the MSB mostly because its available */
+#define PREEMPT_NEED_RESCHED 0x80000000
#define PREEMPT_ENABLED (0 + PREEMPT_NEED_RESCHED)
static inline int preempt_count(void)
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index 84be7f02d0c2..39b13d71a8fe 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -203,22 +203,13 @@ device_initcall(ftrace_plt_init);
*/
unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
{
- struct ftrace_graph_ent trace;
-
if (unlikely(ftrace_graph_is_dead()))
goto out;
if (unlikely(atomic_read(&current->tracing_graph_pause)))
goto out;
ip -= MCOUNT_INSN_SIZE;
- trace.func = ip;
- trace.depth = current->curr_ret_stack + 1;
- /* Only trace if the calling function expects to. */
- if (!ftrace_graph_entry(&trace))
- goto out;
- if (ftrace_push_return_trace(parent, ip, &trace.depth, 0,
- NULL) == -EBUSY)
- goto out;
- parent = (unsigned long) return_to_handler;
+ if (!function_graph_enter(parent, ip, 0, NULL))
+ parent = (unsigned long) return_to_handler;
out:
return parent;
}
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c
index f413f57f8d20..32023b4f9dc0 100644
--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -134,16 +134,6 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data,
return ret;
}
-/*
- * The kernel is loaded to a fixed location. Turn off kexec_locate_mem_hole
- * and provide kbuf->mem by hand.
- */
-int arch_kexec_walk_mem(struct kexec_buf *kbuf,
- int (*func)(struct resource *, void *))
-{
- return 1;
-}
-
int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
Elf_Shdr *section,
const Elf_Shdr *relsec,
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c
index 74091fd3101e..d5523adeddbf 100644
--- a/arch/s390/kernel/perf_cpum_cf.c
+++ b/arch/s390/kernel/perf_cpum_cf.c
@@ -346,6 +346,8 @@ static int __hw_perf_event_init(struct perf_event *event)
break;
case PERF_TYPE_HARDWARE:
+ if (is_sampling_event(event)) /* No sampling support */
+ return -ENOENT;
ev = attr->config;
/* Count user space (problem-state) only */
if (!attr->exclude_user && attr->exclude_kernel) {
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index fe24150ff666..7f4bc58a53b9 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -11,6 +11,9 @@
* Jason J. Herne <jjherne@us.ibm.com>
*/
+#define KMSG_COMPONENT "kvm-s390"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
#include <linux/compiler.h>
#include <linux/err.h>
#include <linux/fs.h>
@@ -44,10 +47,6 @@
#include "kvm-s390.h"
#include "gaccess.h"
-#define KMSG_COMPONENT "kvm-s390"
-#undef pr_fmt
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
#define CREATE_TRACE_POINTS
#include "trace.h"
#include "trace-s390.h"
@@ -417,19 +416,30 @@ static void kvm_s390_cpu_feat_init(void)
int kvm_arch_init(void *opaque)
{
+ int rc;
+
kvm_s390_dbf = debug_register("kvm-trace", 32, 1, 7 * sizeof(long));
if (!kvm_s390_dbf)
return -ENOMEM;
if (debug_register_view(kvm_s390_dbf, &debug_sprintf_view)) {
- debug_unregister(kvm_s390_dbf);
- return -ENOMEM;
+ rc = -ENOMEM;
+ goto out_debug_unreg;
}
kvm_s390_cpu_feat_init();
/* Register floating interrupt controller interface. */
- return kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC);
+ rc = kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC);
+ if (rc) {
+ pr_err("Failed to register FLIC rc=%d\n", rc);
+ goto out_debug_unreg;
+ }
+ return 0;
+
+out_debug_unreg:
+ debug_unregister(kvm_s390_dbf);
+ return rc;
}
void kvm_arch_exit(void)
@@ -464,7 +474,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_CSS_SUPPORT:
case KVM_CAP_IOEVENTFD:
case KVM_CAP_DEVICE_CTRL:
- case KVM_CAP_ENABLE_CAP_VM:
case KVM_CAP_S390_IRQCHIP:
case KVM_CAP_VM_ATTRIBUTES:
case KVM_CAP_MP_STATE:
@@ -607,7 +616,7 @@ static void icpt_operexc_on_all_vcpus(struct kvm *kvm)
}
}
-static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
+int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
{
int r;
@@ -1933,14 +1942,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
r = kvm_s390_inject_vm(kvm, &s390int);
break;
}
- case KVM_ENABLE_CAP: {
- struct kvm_enable_cap cap;
- r = -EFAULT;
- if (copy_from_user(&cap, argp, sizeof(cap)))
- break;
- r = kvm_vm_ioctl_enable_cap(kvm, &cap);
- break;
- }
case KVM_CREATE_IRQCHIP: {
struct kvm_irq_routing_entry routing;
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index 363f6470d742..3b93ba0b5d8d 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -111,11 +111,12 @@ static void note_page(struct seq_file *m, struct pg_state *st,
}
#ifdef CONFIG_KASAN
-static void note_kasan_zero_page(struct seq_file *m, struct pg_state *st)
+static void note_kasan_early_shadow_page(struct seq_file *m,
+ struct pg_state *st)
{
unsigned int prot;
- prot = pte_val(*kasan_zero_pte) &
+ prot = pte_val(*kasan_early_shadow_pte) &
(_PAGE_PROTECT | _PAGE_INVALID | _PAGE_NOEXEC);
note_page(m, st, prot, 4);
}
@@ -154,8 +155,8 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
int i;
#ifdef CONFIG_KASAN
- if ((pud_val(*pud) & PAGE_MASK) == __pa(kasan_zero_pmd)) {
- note_kasan_zero_page(m, st);
+ if ((pud_val(*pud) & PAGE_MASK) == __pa(kasan_early_shadow_pmd)) {
+ note_kasan_early_shadow_page(m, st);
return;
}
#endif
@@ -185,8 +186,8 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st,
int i;
#ifdef CONFIG_KASAN
- if ((p4d_val(*p4d) & PAGE_MASK) == __pa(kasan_zero_pud)) {
- note_kasan_zero_page(m, st);
+ if ((p4d_val(*p4d) & PAGE_MASK) == __pa(kasan_early_shadow_pud)) {
+ note_kasan_early_shadow_page(m, st);
return;
}
#endif
@@ -215,8 +216,8 @@ static void walk_p4d_level(struct seq_file *m, struct pg_state *st,
int i;
#ifdef CONFIG_KASAN
- if ((pgd_val(*pgd) & PAGE_MASK) == __pa(kasan_zero_p4d)) {
- note_kasan_zero_page(m, st);
+ if ((pgd_val(*pgd) & PAGE_MASK) == __pa(kasan_early_shadow_p4d)) {
+ note_kasan_early_shadow_page(m, st);
return;
}
#endif
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 76d0708438e9..3e82f66d5c61 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -59,7 +59,7 @@ static void __init setup_zero_pages(void)
order = 7;
/* Limit number of empty zero pages for small memory sizes */
- while (order > 2 && (totalram_pages >> 10) < (1UL << order))
+ while (order > 2 && (totalram_pages() >> 10) < (1UL << order))
order--;
empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
@@ -242,7 +242,7 @@ int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
}
#ifdef CONFIG_MEMORY_HOTREMOVE
-int arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
+int arch_remove_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap)
{
/*
* There is no hardware or firmware interface which could trigger a
diff --git a/arch/s390/mm/kasan_init.c b/arch/s390/mm/kasan_init.c
index acb9645b762b..bac5c27d11fc 100644
--- a/arch/s390/mm/kasan_init.c
+++ b/arch/s390/mm/kasan_init.c
@@ -107,7 +107,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
if (mode == POPULATE_ZERO_SHADOW &&
IS_ALIGNED(address, PGDIR_SIZE) &&
end - address >= PGDIR_SIZE) {
- pgd_populate(&init_mm, pg_dir, kasan_zero_p4d);
+ pgd_populate(&init_mm, pg_dir,
+ kasan_early_shadow_p4d);
address = (address + PGDIR_SIZE) & PGDIR_MASK;
continue;
}
@@ -120,7 +121,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
if (mode == POPULATE_ZERO_SHADOW &&
IS_ALIGNED(address, P4D_SIZE) &&
end - address >= P4D_SIZE) {
- p4d_populate(&init_mm, p4_dir, kasan_zero_pud);
+ p4d_populate(&init_mm, p4_dir,
+ kasan_early_shadow_pud);
address = (address + P4D_SIZE) & P4D_MASK;
continue;
}
@@ -133,7 +135,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
if (mode == POPULATE_ZERO_SHADOW &&
IS_ALIGNED(address, PUD_SIZE) &&
end - address >= PUD_SIZE) {
- pud_populate(&init_mm, pu_dir, kasan_zero_pmd);
+ pud_populate(&init_mm, pu_dir,
+ kasan_early_shadow_pmd);
address = (address + PUD_SIZE) & PUD_MASK;
continue;
}
@@ -146,7 +149,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
if (mode == POPULATE_ZERO_SHADOW &&
IS_ALIGNED(address, PMD_SIZE) &&
end - address >= PMD_SIZE) {
- pmd_populate(&init_mm, pm_dir, kasan_zero_pte);
+ pmd_populate(&init_mm, pm_dir,
+ kasan_early_shadow_pte);
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
@@ -188,7 +192,7 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
pte_val(*pt_dir) = __pa(page) | pgt_prot;
break;
case POPULATE_ZERO_SHADOW:
- page = kasan_zero_page;
+ page = kasan_early_shadow_page;
pte_val(*pt_dir) = __pa(page) | pgt_prot_zero;
break;
}
@@ -256,14 +260,14 @@ void __init kasan_early_init(void)
unsigned long vmax;
unsigned long pgt_prot = pgprot_val(PAGE_KERNEL_RO);
pte_t pte_z;
- pmd_t pmd_z = __pmd(__pa(kasan_zero_pte) | _SEGMENT_ENTRY);
- pud_t pud_z = __pud(__pa(kasan_zero_pmd) | _REGION3_ENTRY);
- p4d_t p4d_z = __p4d(__pa(kasan_zero_pud) | _REGION2_ENTRY);
+ pmd_t pmd_z = __pmd(__pa(kasan_early_shadow_pte) | _SEGMENT_ENTRY);
+ pud_t pud_z = __pud(__pa(kasan_early_shadow_pmd) | _REGION3_ENTRY);
+ p4d_t p4d_z = __p4d(__pa(kasan_early_shadow_pud) | _REGION2_ENTRY);
kasan_early_detect_facilities();
if (!has_nx)
pgt_prot &= ~_PAGE_NOEXEC;
- pte_z = __pte(__pa(kasan_zero_page) | pgt_prot);
+ pte_z = __pte(__pa(kasan_early_shadow_page) | pgt_prot);
memsize = get_mem_detect_end();
if (!memsize)
@@ -292,10 +296,13 @@ void __init kasan_early_init(void)
}
/* init kasan zero shadow */
- crst_table_init((unsigned long *)kasan_zero_p4d, p4d_val(p4d_z));
- crst_table_init((unsigned long *)kasan_zero_pud, pud_val(pud_z));
- crst_table_init((unsigned long *)kasan_zero_pmd, pmd_val(pmd_z));
- memset64((u64 *)kasan_zero_pte, pte_val(pte_z), PTRS_PER_PTE);
+ crst_table_init((unsigned long *)kasan_early_shadow_p4d,
+ p4d_val(p4d_z));
+ crst_table_init((unsigned long *)kasan_early_shadow_pud,
+ pud_val(pud_z));
+ crst_table_init((unsigned long *)kasan_early_shadow_pmd,
+ pmd_val(pmd_z));
+ memset64((u64 *)kasan_early_shadow_pte, pte_val(pte_z), PTRS_PER_PTE);
shadow_alloc_size = memsize >> KASAN_SHADOW_SCALE_SHIFT;
pgalloc_low = round_up((unsigned long)_end, _SEGMENT_SIZE);
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 814f26520aa2..db6bb2f97a2c 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -131,6 +131,7 @@ void crst_table_downgrade(struct mm_struct *mm)
}
pgd = mm->pgd;
+ mm_dec_nr_pmds(mm);
mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN);
mm->context.asce_limit = _REGION3_SIZE;
mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
@@ -351,7 +352,7 @@ void tlb_table_flush(struct mmu_gather *tlb)
struct mmu_table_batch **batch = &tlb->batch;
if (*batch) {
- call_rcu_sched(&(*batch)->rcu, tlb_remove_table_rcu);
+ call_rcu(&(*batch)->rcu, tlb_remove_table_rcu);
*batch = NULL;
}
}
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index d7052cbe984f..3ff758eeb71d 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -821,10 +821,22 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i
/*
* BPF_ARSH
*/
+ case BPF_ALU | BPF_ARSH | BPF_X: /* ((s32) dst) >>= src */
+ /* sra %dst,%dst,0(%src) */
+ EMIT4_DISP(0x8a000000, dst_reg, src_reg, 0);
+ EMIT_ZERO(dst_reg);
+ break;
case BPF_ALU64 | BPF_ARSH | BPF_X: /* ((s64) dst) >>= src */
/* srag %dst,%dst,0(%src) */
EMIT6_DISP_LH(0xeb000000, 0x000a, dst_reg, dst_reg, src_reg, 0);
break;
+ case BPF_ALU | BPF_ARSH | BPF_K: /* ((s32) dst >> imm */
+ if (imm == 0)
+ break;
+ /* sra %dst,imm(%r0) */
+ EMIT4_DISP(0x8a000000, dst_reg, REG_0, imm);
+ EMIT_ZERO(dst_reg);
+ break;
case BPF_ALU64 | BPF_ARSH | BPF_K: /* ((s64) dst) >>= imm */
if (imm == 0)
break;
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index d387a0fbdd7e..9e52d1527f71 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -15,8 +15,6 @@
#include <linux/pci.h>
#include <asm/pci_dma.h>
-#define S390_MAPPING_ERROR (~(dma_addr_t) 0x0)
-
static struct kmem_cache *dma_region_table_cache;
static struct kmem_cache *dma_page_table_cache;
static int s390_iommu_strict;
@@ -301,7 +299,7 @@ static dma_addr_t dma_alloc_address(struct device *dev, int size)
out_error:
spin_unlock_irqrestore(&zdev->iommu_bitmap_lock, flags);
- return S390_MAPPING_ERROR;
+ return DMA_MAPPING_ERROR;
}
static void dma_free_address(struct device *dev, dma_addr_t dma_addr, int size)
@@ -349,7 +347,7 @@ static dma_addr_t s390_dma_map_pages(struct device *dev, struct page *page,
/* This rounds up number of pages based on size and offset */
nr_pages = iommu_num_pages(pa, size, PAGE_SIZE);
dma_addr = dma_alloc_address(dev, nr_pages);
- if (dma_addr == S390_MAPPING_ERROR) {
+ if (dma_addr == DMA_MAPPING_ERROR) {
ret = -ENOSPC;
goto out_err;
}
@@ -372,7 +370,7 @@ out_free:
out_err:
zpci_err("map error:\n");
zpci_err_dma(ret, pa);
- return S390_MAPPING_ERROR;
+ return DMA_MAPPING_ERROR;
}
static void s390_dma_unmap_pages(struct device *dev, dma_addr_t dma_addr,
@@ -406,7 +404,7 @@ static void *s390_dma_alloc(struct device *dev, size_t size,
dma_addr_t map;
size = PAGE_ALIGN(size);
- page = alloc_pages(flag, get_order(size));
+ page = alloc_pages(flag | __GFP_ZERO, get_order(size));
if (!page)
return NULL;
@@ -449,7 +447,7 @@ static int __s390_dma_map_sg(struct device *dev, struct scatterlist *sg,
int ret;
dma_addr_base = dma_alloc_address(dev, nr_pages);
- if (dma_addr_base == S390_MAPPING_ERROR)
+ if (dma_addr_base == DMA_MAPPING_ERROR)
return -ENOMEM;
dma_addr = dma_addr_base;
@@ -496,7 +494,7 @@ static int s390_dma_map_sg(struct device *dev, struct scatterlist *sg,
for (i = 1; i < nr_elements; i++) {
s = sg_next(s);
- s->dma_address = S390_MAPPING_ERROR;
+ s->dma_address = DMA_MAPPING_ERROR;
s->dma_length = 0;
if (s->offset || (size & ~PAGE_MASK) ||
@@ -546,11 +544,6 @@ static void s390_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
}
}
-static int s390_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return dma_addr == S390_MAPPING_ERROR;
-}
-
int zpci_dma_init_device(struct zpci_dev *zdev)
{
int rc;
@@ -675,7 +668,6 @@ const struct dma_map_ops s390_pci_dma_ops = {
.unmap_sg = s390_dma_unmap_sg,
.map_page = s390_dma_map_pages,
.unmap_page = s390_dma_unmap_pages,
- .mapping_error = s390_mapping_error,
/* dma_supported is unconditionally true without a callback */
};
EXPORT_SYMBOL_GPL(s390_pci_dma_ops);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.