summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2023-03-01 20:13:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-03-01 20:13:00 +0300
commit64e851689e441e66e001ae063d4536602f9f74cb (patch)
treec1be998b768f6f53be43252d057b36ba28ecfb74 /arch
parente31b283a58dfe50ab1641d8fd2ead9b62f9ab256 (diff)
parent04df97e150c83d4640540008e95d0229cb188135 (diff)
downloadlinux-64e851689e441e66e001ae063d4536602f9f74cb.tar.xz
Merge tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Richard Weinberger: - Add support for rust (yay!) - Add support for LTO - Add platform bus support to virtio-pci - Various virtio fixes - Coding style, spelling cleanups * tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (27 commits) Documentation: rust: Fix arch support table uml: vector: Remove unused definitions VECTOR_{WRITE,HEADERS} um: virt-pci: properly remove PCI device from bus um: virtio_uml: move device breaking into workqueue um: virtio_uml: mark device as unregistered when breaking it um: virtio_uml: free command if adding to virtqueue failed UML: define RUNTIME_DISCARD_EXIT virt-pci: add platform bus support um-virt-pci: Make max delay configurable um: virt-pci: implement pcibios_get_phb_of_node() um: Support LTO um: put power options in a menu um: Use CFLAGS_vmlinux um: Prevent building modules incompatible with MODVERSIONS um: Avoid pcap multiple definition errors um: Make the definition of cpu_data more compatible x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list rust: arch/um: Add support for CONFIG_RUST under x86_64 UML rust: arch/um: Disable FP/SIMD instruction to match x86 rust: arch/um: Use 'pie' relocation mode under UML ...
Diffstat (limited to 'arch')
-rw-r--r--arch/um/Kconfig7
-rw-r--r--arch/um/Makefile7
-rw-r--r--arch/um/drivers/Kconfig2
-rw-r--r--arch/um/drivers/pcap_kern.c4
-rw-r--r--arch/um/drivers/vector_kern.c1
-rw-r--r--arch/um/drivers/vector_user.h2
-rw-r--r--arch/um/drivers/virt-pci.c139
-rw-r--r--arch/um/drivers/virtio_uml.c20
-rw-r--r--arch/um/include/asm/processor-generic.h2
-rw-r--r--arch/um/kernel/exec.c4
-rw-r--r--arch/um/kernel/tlb.c6
-rw-r--r--arch/um/kernel/um_arch.c2
-rw-r--r--arch/um/kernel/vmlinux.lds.S2
-rw-r--r--arch/um/os-Linux/irq.c4
-rw-r--r--arch/um/os-Linux/skas/mem.c19
-rw-r--r--arch/um/os-Linux/skas/process.c121
-rw-r--r--arch/x86/Makefile.um6
-rw-r--r--arch/x86/um/vdso/Makefile2
-rw-r--r--arch/x86/um/vdso/um_vdso.c12
19 files changed, 258 insertions, 104 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index ad4ff3b0e91e..541a9b18e343 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -25,9 +25,12 @@ config UML
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
select HAVE_GCC_PLUGINS
+ select ARCH_SUPPORTS_LTO_CLANG
+ select ARCH_SUPPORTS_LTO_CLANG_THIN
select TRACE_IRQFLAGS_SUPPORT
select TTY # Needed for line.c
select HAVE_ARCH_VMAP_STACK
+ select HAVE_RUST if X86_64
config MMU
bool
@@ -242,4 +245,8 @@ source "arch/um/drivers/Kconfig"
config ARCH_SUSPEND_POSSIBLE
def_bool y
+menu "Power management options"
+
source "kernel/power/Kconfig"
+
+endmenu
diff --git a/arch/um/Makefile b/arch/um/Makefile
index f1d4d67157be..8186d4761bda 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -68,6 +68,8 @@ KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
-Din6addr_loopback=kernel_in6addr_loopback \
-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
+KBUILD_RUSTFLAGS += -Crelocation-model=pie
+
KBUILD_AFLAGS += $(ARCH_INCLUDE)
USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
@@ -139,11 +141,10 @@ ifeq ($(CONFIG_LD_IS_BFD),y)
LDFLAGS_EXECSTACK += $(call ld-option,--no-warn-rwx-segments)
endif
-LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS),-Wl,$(opt))
+LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS) $(LDFLAGS_EXECSTACK),-Wl,$(opt))
# Used by link-vmlinux.sh which has special support for um link
-export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
-export LDFLAGS_vmlinux := $(LDFLAGS_EXECSTACK)
+export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) $(CC_FLAGS_LTO)
# When cleaning we don't include .config, so we don't include
# TT or skas makefiles and don't clean skas_ptregs.h.
diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig
index a4f0a19fbe14..36911b1fddcf 100644
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -261,6 +261,7 @@ config UML_NET_VECTOR
config UML_NET_VDE
bool "VDE transport (obsolete)"
depends on UML_NET
+ depends on !MODVERSIONS
select MAY_HAVE_RUNTIME_DEPS
help
This User-Mode Linux network transport allows one or more running
@@ -309,6 +310,7 @@ config UML_NET_MCAST
config UML_NET_PCAP
bool "pcap transport (obsolete)"
depends on UML_NET
+ depends on !MODVERSIONS
select MAY_HAVE_RUNTIME_DEPS
help
The pcap transport makes a pcap packet stream on the host look
diff --git a/arch/um/drivers/pcap_kern.c b/arch/um/drivers/pcap_kern.c
index cfe4cb17694c..25ee2c97ca21 100644
--- a/arch/um/drivers/pcap_kern.c
+++ b/arch/um/drivers/pcap_kern.c
@@ -15,7 +15,7 @@ struct pcap_init {
char *filter;
};
-void pcap_init(struct net_device *dev, void *data)
+void pcap_init_kern(struct net_device *dev, void *data)
{
struct uml_net_private *pri;
struct pcap_data *ppri;
@@ -44,7 +44,7 @@ static int pcap_write(int fd, struct sk_buff *skb, struct uml_net_private *lp)
}
static const struct net_kern_info pcap_kern_info = {
- .init = pcap_init,
+ .init = pcap_init_kern,
.protocol = eth_protocol,
.read = pcap_read,
.write = pcap_write,
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index ded7c47d2fbe..131b7cb29576 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -767,6 +767,7 @@ static int vector_config(char *str, char **error_out)
if (parsed == NULL) {
*error_out = "vector_config failed to parse parameters";
+ kfree(params);
return -EINVAL;
}
diff --git a/arch/um/drivers/vector_user.h b/arch/um/drivers/vector_user.h
index 3a73d17a0161..59ed5f9e6e41 100644
--- a/arch/um/drivers/vector_user.h
+++ b/arch/um/drivers/vector_user.h
@@ -68,8 +68,6 @@ struct vector_fds {
};
#define VECTOR_READ 1
-#define VECTOR_WRITE (1 < 1)
-#define VECTOR_HEADERS (1 < 2)
extern struct arglist *uml_parse_vector_ifspec(char *arg);
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
index 3ac220dafec4..7699ca5f35d4 100644
--- a/arch/um/drivers/virt-pci.c
+++ b/arch/um/drivers/virt-pci.c
@@ -8,6 +8,7 @@
#include <linux/virtio.h>
#include <linux/virtio_config.h>
#include <linux/logic_iomem.h>
+#include <linux/of_platform.h>
#include <linux/irqdomain.h>
#include <linux/virtio_pcidev.h>
#include <linux/virtio-uml.h>
@@ -39,6 +40,8 @@ struct um_pci_device {
unsigned long status;
int irq;
+
+ bool platform;
};
struct um_pci_device_reg {
@@ -48,13 +51,15 @@ struct um_pci_device_reg {
static struct pci_host_bridge *bridge;
static DEFINE_MUTEX(um_pci_mtx);
+static struct um_pci_device *um_pci_platform_device;
static struct um_pci_device_reg um_pci_devices[MAX_DEVICES];
static struct fwnode_handle *um_pci_fwnode;
static struct irq_domain *um_pci_inner_domain;
static struct irq_domain *um_pci_msi_domain;
static unsigned long um_pci_msi_used[BITS_TO_LONGS(MAX_MSI_VECTORS)];
-#define UM_VIRT_PCI_MAXDELAY 40000
+static unsigned int um_pci_max_delay_us = 40000;
+module_param_named(max_delay_us, um_pci_max_delay_us, uint, 0644);
struct um_pci_message_buffer {
struct virtio_pcidev_msg hdr;
@@ -132,8 +137,11 @@ static int um_pci_send_cmd(struct um_pci_device *dev,
out ? 1 : 0,
posted ? cmd : HANDLE_NO_FREE(cmd),
GFP_ATOMIC);
- if (ret)
+ if (ret) {
+ if (posted)
+ kfree(cmd);
goto out;
+ }
if (posted) {
virtqueue_kick(dev->cmd_vq);
@@ -155,7 +163,7 @@ static int um_pci_send_cmd(struct um_pci_device *dev,
kfree(completed);
if (WARN_ONCE(virtqueue_is_broken(dev->cmd_vq) ||
- ++delay_count > UM_VIRT_PCI_MAXDELAY,
+ ++delay_count > um_pci_max_delay_us,
"um virt-pci delay: %d", delay_count)) {
ret = -EIO;
break;
@@ -480,6 +488,9 @@ static void um_pci_handle_irq_message(struct virtqueue *vq,
struct virtio_device *vdev = vq->vdev;
struct um_pci_device *dev = vdev->priv;
+ if (!dev->irq)
+ return;
+
/* we should properly chain interrupts, but on ARCH=um we don't care */
switch (msg->op) {
@@ -533,6 +544,25 @@ static void um_pci_irq_vq_cb(struct virtqueue *vq)
}
}
+/* Copied from arch/x86/kernel/devicetree.c */
+struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
+{
+ struct device_node *np;
+
+ for_each_node_by_type(np, "pci") {
+ const void *prop;
+ unsigned int bus_min;
+
+ prop = of_get_property(np, "bus-range", NULL);
+ if (!prop)
+ continue;
+ bus_min = be32_to_cpup(prop);
+ if (bus->number == bus_min)
+ return np;
+ }
+ return NULL;
+}
+
static int um_pci_init_vqs(struct um_pci_device *dev)
{
struct virtqueue *vqs[2];
@@ -561,6 +591,55 @@ static int um_pci_init_vqs(struct um_pci_device *dev)
return 0;
}
+static void __um_pci_virtio_platform_remove(struct virtio_device *vdev,
+ struct um_pci_device *dev)
+{
+ virtio_reset_device(vdev);
+ vdev->config->del_vqs(vdev);
+
+ mutex_lock(&um_pci_mtx);
+ um_pci_platform_device = NULL;
+ mutex_unlock(&um_pci_mtx);
+
+ kfree(dev);
+}
+
+static int um_pci_virtio_platform_probe(struct virtio_device *vdev,
+ struct um_pci_device *dev)
+{
+ int ret;
+
+ dev->platform = true;
+
+ mutex_lock(&um_pci_mtx);
+
+ if (um_pci_platform_device) {
+ mutex_unlock(&um_pci_mtx);
+ ret = -EBUSY;
+ goto out_free;
+ }
+
+ ret = um_pci_init_vqs(dev);
+ if (ret) {
+ mutex_unlock(&um_pci_mtx);
+ goto out_free;
+ }
+
+ um_pci_platform_device = dev;
+
+ mutex_unlock(&um_pci_mtx);
+
+ ret = of_platform_default_populate(vdev->dev.of_node, NULL, &vdev->dev);
+ if (ret)
+ __um_pci_virtio_platform_remove(vdev, dev);
+
+ return ret;
+
+out_free:
+ kfree(dev);
+ return ret;
+}
+
static int um_pci_virtio_probe(struct virtio_device *vdev)
{
struct um_pci_device *dev;
@@ -574,6 +653,9 @@ static int um_pci_virtio_probe(struct virtio_device *vdev)
dev->vdev = vdev;
vdev->priv = dev;
+ if (of_device_is_compatible(vdev->dev.of_node, "simple-bus"))
+ return um_pci_virtio_platform_probe(vdev, dev);
+
mutex_lock(&um_pci_mtx);
for (i = 0; i < MAX_DEVICES; i++) {
if (um_pci_devices[i].dev)
@@ -623,9 +705,11 @@ static void um_pci_virtio_remove(struct virtio_device *vdev)
struct um_pci_device *dev = vdev->priv;
int i;
- /* Stop all virtqueues */
- virtio_reset_device(vdev);
- vdev->config->del_vqs(vdev);
+ if (dev->platform) {
+ of_platform_depopulate(&vdev->dev);
+ __um_pci_virtio_platform_remove(vdev, dev);
+ return;
+ }
device_set_wakeup_enable(&vdev->dev, false);
@@ -633,12 +717,27 @@ static void um_pci_virtio_remove(struct virtio_device *vdev)
for (i = 0; i < MAX_DEVICES; i++) {
if (um_pci_devices[i].dev != dev)
continue;
+
um_pci_devices[i].dev = NULL;
irq_free_desc(dev->irq);
+
+ break;
}
mutex_unlock(&um_pci_mtx);
- um_pci_rescan();
+ if (i < MAX_DEVICES) {
+ struct pci_dev *pci_dev;
+
+ pci_dev = pci_get_slot(bridge->bus, i);
+ if (pci_dev)
+ pci_stop_and_remove_bus_device_locked(pci_dev);
+ }
+
+ /* Stop all virtqueues */
+ virtio_reset_device(vdev);
+ dev->cmd_vq = NULL;
+ dev->irq_vq = NULL;
+ vdev->config->del_vqs(vdev);
kfree(dev);
}
@@ -860,6 +959,30 @@ void *pci_root_bus_fwnode(struct pci_bus *bus)
return um_pci_fwnode;
}
+static long um_pci_map_platform(unsigned long offset, size_t size,
+ const struct logic_iomem_ops **ops,
+ void **priv)
+{
+ if (!um_pci_platform_device)
+ return -ENOENT;
+
+ *ops = &um_pci_device_bar_ops;
+ *priv = &um_pci_platform_device->resptr[0];
+
+ return 0;
+}
+
+static const struct logic_iomem_region_ops um_pci_platform_ops = {
+ .map = um_pci_map_platform,
+};
+
+static struct resource virt_platform_resource = {
+ .name = "platform",
+ .start = 0x10000000,
+ .end = 0x1fffffff,
+ .flags = IORESOURCE_MEM,
+};
+
static int __init um_pci_init(void)
{
int err, i;
@@ -868,6 +991,8 @@ static int __init um_pci_init(void)
&um_pci_cfgspace_ops));
WARN_ON(logic_iomem_add_region(&virt_iomem_resource,
&um_pci_iomem_ops));
+ WARN_ON(logic_iomem_add_region(&virt_platform_resource,
+ &um_pci_platform_ops));
if (WARN(CONFIG_UML_PCI_OVER_VIRTIO_DEVICE_ID < 0,
"No virtio device ID configured for PCI - no PCI support\n"))
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index 588930a0ced1..8adca2000e51 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -168,7 +168,8 @@ static void vhost_user_check_reset(struct virtio_uml_device *vu_dev,
if (!vu_dev->registered)
return;
- virtio_break_device(&vu_dev->vdev);
+ vu_dev->registered = 0;
+
schedule_work(&pdata->conn_broken_wk);
}
@@ -412,7 +413,7 @@ static irqreturn_t vu_req_read_message(struct virtio_uml_device *vu_dev,
if (msg.msg.header.flags & VHOST_USER_FLAG_NEED_REPLY)
vhost_user_reply(vu_dev, &msg.msg, response);
irq_rc = IRQ_HANDLED;
- };
+ }
/* mask EAGAIN as we try non-blocking read until socket is empty */
vu_dev->recv_rc = (rc == -EAGAIN) ? 0 : rc;
return irq_rc;
@@ -1136,6 +1137,15 @@ void virtio_uml_set_no_vq_suspend(struct virtio_device *vdev,
static void vu_of_conn_broken(struct work_struct *wk)
{
+ struct virtio_uml_platform_data *pdata;
+ struct virtio_uml_device *vu_dev;
+
+ pdata = container_of(wk, struct virtio_uml_platform_data, conn_broken_wk);
+
+ vu_dev = platform_get_drvdata(pdata->pdev);
+
+ virtio_break_device(&vu_dev->vdev);
+
/*
* We can't remove the device from the devicetree so the only thing we
* can do is warn.
@@ -1266,8 +1276,14 @@ static int vu_unregister_cmdline_device(struct device *dev, void *data)
static void vu_conn_broken(struct work_struct *wk)
{
struct virtio_uml_platform_data *pdata;
+ struct virtio_uml_device *vu_dev;
pdata = container_of(wk, struct virtio_uml_platform_data, conn_broken_wk);
+
+ vu_dev = platform_get_drvdata(pdata->pdev);
+
+ virtio_break_device(&vu_dev->vdev);
+
vu_unregister_cmdline_device(&pdata->pdev->dev, NULL);
}
diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h
index bb5f06480da9..7414154b8e9a 100644
--- a/arch/um/include/asm/processor-generic.h
+++ b/arch/um/include/asm/processor-generic.h
@@ -91,7 +91,7 @@ struct cpuinfo_um {
extern struct cpuinfo_um boot_cpu_data;
-#define cpu_data (&boot_cpu_data)
+#define cpu_data(cpu) boot_cpu_data
#define current_cpu_data boot_cpu_data
#define cache_line_size() (boot_cpu_data.cache_alignment)
diff --git a/arch/um/kernel/exec.c b/arch/um/kernel/exec.c
index 58938d75871a..827a0d3fa589 100644
--- a/arch/um/kernel/exec.c
+++ b/arch/um/kernel/exec.c
@@ -29,8 +29,8 @@ void flush_thread(void)
ret = unmap(&current->mm->context.id, 0, TASK_SIZE, 1, &data);
if (ret) {
- printk(KERN_ERR "flush_thread - clearing address space failed, "
- "err = %d\n", ret);
+ printk(KERN_ERR "%s - clearing address space failed, err = %d\n",
+ __func__, ret);
force_sig(SIGKILL);
}
get_safe_registers(current_pt_regs()->regs.gp,
diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index ad449173a1a1..7d050ab0f78a 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -314,8 +314,8 @@ static inline int update_p4d_range(pgd_t *pgd, unsigned long addr,
return ret;
}
-void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
- unsigned long end_addr, int force)
+static void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
+ unsigned long end_addr, int force)
{
pgd_t *pgd;
struct host_vm_change hvc;
@@ -597,6 +597,8 @@ void force_flush_all(void)
struct vm_area_struct *vma;
VMA_ITERATOR(vmi, mm, 0);
+ mmap_read_lock(mm);
for_each_vma(vmi, vma)
fix_range(mm, vma->vm_start, vma->vm_end, 1);
+ mmap_read_unlock(mm);
}
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 786b44dc20c9..8dcda617b8bf 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -96,7 +96,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
static void *c_start(struct seq_file *m, loff_t *pos)
{
- return *pos < nr_cpu_ids ? cpu_data + *pos : NULL;
+ return *pos < nr_cpu_ids ? &boot_cpu_data + *pos : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
index 16e49bfa2b42..53d719c04ba9 100644
--- a/arch/um/kernel/vmlinux.lds.S
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -1,4 +1,4 @@
-
+#define RUNTIME_DISCARD_EXIT
KERNEL_STACK_SIZE = 4096 * (1 << CONFIG_KERNEL_STACK_ORDER);
#ifdef CONFIG_LD_SCRIPT_STATIC
diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c
index 98ea910ef87c..cf7e49c08b21 100644
--- a/arch/um/os-Linux/irq.c
+++ b/arch/um/os-Linux/irq.c
@@ -127,12 +127,10 @@ int os_mod_epoll_fd(int events, int fd, void *data)
int os_del_epoll_fd(int fd)
{
struct epoll_event event;
- int result;
/* This is quiet as we use this as IO ON/OFF - so it is often
* invoked on a non-existent fd
*/
- result = epoll_ctl(epollfd, EPOLL_CTL_DEL, fd, &event);
- return result;
+ return epoll_ctl(epollfd, EPOLL_CTL_DEL, fd, &event);
}
void os_set_ioignore(void)
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 3b4975ee67e2..953fb10f3f93 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -60,8 +60,8 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
printk(UM_KERN_ERR "Registers - \n");
for (i = 0; i < MAX_REG_NR; i++)
printk(UM_KERN_ERR "\t%d\t0x%lx\n", i, syscall_regs[i]);
- panic("do_syscall_stub : PTRACE_SETREGS failed, errno = %d\n",
- -n);
+ panic("%s : PTRACE_SETREGS failed, errno = %d\n",
+ __func__, -n);
}
err = ptrace(PTRACE_CONT, pid, 0, 0);
@@ -81,20 +81,17 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
offset = *((unsigned long *) mm_idp->stack + 1);
if (offset) {
data = (unsigned long *)(mm_idp->stack + offset - STUB_DATA);
- printk(UM_KERN_ERR "do_syscall_stub : ret = %ld, offset = %ld, "
- "data = %p\n", ret, offset, data);
+ printk(UM_KERN_ERR "%s : ret = %ld, offset = %ld, data = %p\n",
+ __func__, ret, offset, data);
syscall = (unsigned long *)((unsigned long)data + data[0]);
- printk(UM_KERN_ERR "do_syscall_stub: syscall %ld failed, "
- "return value = 0x%lx, expected return value = 0x%lx\n",
- syscall[0], ret, syscall[7]);
- printk(UM_KERN_ERR " syscall parameters: "
- "0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
+ printk(UM_KERN_ERR "%s: syscall %ld failed, return value = 0x%lx, expected return value = 0x%lx\n",
+ __func__, syscall[0], ret, syscall[7]);
+ printk(UM_KERN_ERR " syscall parameters: 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
syscall[1], syscall[2], syscall[3],
syscall[4], syscall[5], syscall[6]);
for (n = 1; n < data[0]/sizeof(long); n++) {
if (n == 1)
- printk(UM_KERN_ERR " additional syscall "
- "data:");
+ printk(UM_KERN_ERR " additional syscall data:");
if (n % 4 == 1)
printk("\n" UM_KERN_ERR " ");
printk(" 0x%lx", data[n]);
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index b24db6017ded..b1ea53285af1 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -118,8 +118,8 @@ void wait_stub_done(int pid)
err = ptrace(PTRACE_CONT, pid, 0, 0);
if (err) {
- printk(UM_KERN_ERR "wait_stub_done : continue failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : continue failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
}
@@ -130,11 +130,10 @@ void wait_stub_done(int pid)
bad_wait:
err = ptrace_dump_regs(pid);
if (err)
- printk(UM_KERN_ERR "Failed to get registers from stub, "
- "errno = %d\n", -err);
- printk(UM_KERN_ERR "wait_stub_done : failed to wait for SIGTRAP, "
- "pid = %d, n = %d, errno = %d, status = 0x%x\n", pid, n, errno,
- status);
+ printk(UM_KERN_ERR "Failed to get registers from stub, errno = %d\n",
+ -err);
+ printk(UM_KERN_ERR "%s : failed to wait for SIGTRAP, pid = %d, n = %d, errno = %d, status = 0x%x\n",
+ __func__, pid, n, errno, status);
fatal_sigsegv();
}
@@ -195,15 +194,15 @@ static void handle_trap(int pid, struct uml_pt_regs *regs,
err = ptrace(PTRACE_POKEUSER, pid, PT_SYSCALL_NR_OFFSET,
__NR_getpid);
if (err < 0) {
- printk(UM_KERN_ERR "handle_trap - nullifying syscall "
- "failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - nullifying syscall failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
err = ptrace(PTRACE_SYSCALL, pid, 0, 0);
if (err < 0) {
- printk(UM_KERN_ERR "handle_trap - continuing to end of "
- "syscall failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - continuing to end of syscall failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
@@ -212,11 +211,10 @@ static void handle_trap(int pid, struct uml_pt_regs *regs,
(WSTOPSIG(status) != SIGTRAP + 0x80)) {
err = ptrace_dump_regs(pid);
if (err)
- printk(UM_KERN_ERR "Failed to get registers "
- "from process, errno = %d\n", -err);
- printk(UM_KERN_ERR "handle_trap - failed to wait at "
- "end of syscall, errno = %d, status = %d\n",
- errno, status);
+ printk(UM_KERN_ERR "Failed to get registers from process, errno = %d\n",
+ -err);
+ printk(UM_KERN_ERR "%s - failed to wait at end of syscall, errno = %d, status = %d\n",
+ __func__, errno, status);
fatal_sigsegv();
}
}
@@ -256,8 +254,8 @@ static int userspace_tramp(void *stack)
addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
if (addr == MAP_FAILED) {
- printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, "
- "errno = %d\n", STUB_CODE, errno);
+ printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, errno = %d\n",
+ STUB_CODE, errno);
exit(1);
}
@@ -267,8 +265,7 @@ static int userspace_tramp(void *stack)
UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_SHARED, fd, offset);
if (addr == MAP_FAILED) {
- printk(UM_KERN_ERR "mapping segfault stack "
- "at 0x%lx failed, errno = %d\n",
+ printk(UM_KERN_ERR "mapping segfault stack at 0x%lx failed, errno = %d\n",
STUB_DATA, errno);
exit(1);
}
@@ -286,8 +283,8 @@ static int userspace_tramp(void *stack)
sa.sa_sigaction = (void *) v;
sa.sa_restorer = NULL;
if (sigaction(SIGSEGV, &sa, NULL) < 0) {
- printk(UM_KERN_ERR "userspace_tramp - setting SIGSEGV "
- "handler failed - errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - setting SIGSEGV handler failed - errno = %d\n",
+ __func__, errno);
exit(1);
}
}
@@ -322,8 +319,8 @@ int start_userspace(unsigned long stub_stack)
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (stack == MAP_FAILED) {
err = -errno;
- printk(UM_KERN_ERR "start_userspace : mmap failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : mmap failed, errno = %d\n",
+ __func__, errno);
return err;
}
@@ -336,8 +333,8 @@ int start_userspace(unsigned long stub_stack)
pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);
if (pid < 0) {
err = -errno;
- printk(UM_KERN_ERR "start_userspace : clone failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : clone failed, errno = %d\n",
+ __func__, errno);
return err;
}
@@ -345,31 +342,31 @@ int start_userspace(unsigned long stub_stack)
CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED | __WALL));
if (n < 0) {
err = -errno;
- printk(UM_KERN_ERR "start_userspace : wait failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : wait failed, errno = %d\n",
+ __func__, errno);
goto out_kill;
}
} while (WIFSTOPPED(status) && (WSTOPSIG(status) == SIGALRM));
if (!WIFSTOPPED(status) || (WSTOPSIG(status) != SIGSTOP)) {
err = -EINVAL;
- printk(UM_KERN_ERR "start_userspace : expected SIGSTOP, got "
- "status = %d\n", status);
+ printk(UM_KERN_ERR "%s : expected SIGSTOP, got status = %d\n",
+ __func__, status);
goto out_kill;
}
if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,
(void *) PTRACE_O_TRACESYSGOOD) < 0) {
err = -errno;
- printk(UM_KERN_ERR "start_userspace : PTRACE_OLDSETOPTIONS "
- "failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : PTRACE_OLDSETOPTIONS failed, errno = %d\n",
+ __func__, errno);
goto out_kill;
}
if (munmap(stack, UM_KERN_PAGE_SIZE) < 0) {
err = -errno;
- printk(UM_KERN_ERR "start_userspace : munmap failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : munmap failed, errno = %d\n",
+ __func__, errno);
goto out_kill;
}
@@ -403,14 +400,14 @@ void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs)
* just kill the process.
*/
if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {
- printk(UM_KERN_ERR "userspace - ptrace set regs "
- "failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - ptrace set regs failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
if (put_fp_registers(pid, regs->fp)) {
- printk(UM_KERN_ERR "userspace - ptrace set fp regs "
- "failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - ptrace set fp regs failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
@@ -421,28 +418,28 @@ void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs)
singlestepping(NULL));
if (ptrace(op, pid, 0, 0)) {
- printk(UM_KERN_ERR "userspace - ptrace continue "
- "failed, op = %d, errno = %d\n", op, errno);
+ printk(UM_KERN_ERR "%s - ptrace continue failed, op = %d, errno = %d\n",
+ __func__, op, errno);
fatal_sigsegv();
}
CATCH_EINTR(err = waitpid(pid, &status, WUNTRACED | __WALL));
if (err < 0) {
- printk(UM_KERN_ERR "userspace - wait failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - wait failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
regs->is_user = 1;
if (ptrace(PTRACE_GETREGS, pid, 0, regs->gp)) {
- printk(UM_KERN_ERR "userspace - PTRACE_GETREGS failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - PTRACE_GETREGS failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
if (get_fp_registers(pid, regs->fp)) {
- printk(UM_KERN_ERR "userspace - get_fp_registers failed, "
- "errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s - get_fp_registers failed, errno = %d\n",
+ __func__, errno);
fatal_sigsegv();
}
@@ -494,8 +491,8 @@ void userspace(struct uml_pt_regs *regs, unsigned long *aux_fp_regs)
unblock_signals_trace();
break;
default:
- printk(UM_KERN_ERR "userspace - child stopped "
- "with signal %d\n", sig);
+ printk(UM_KERN_ERR "%s - child stopped with signal %d\n",
+ __func__, sig);
fatal_sigsegv();
}
pid = userspace_pid[0];
@@ -555,15 +552,15 @@ int copy_context_skas0(unsigned long new_stack, int pid)
err = ptrace_setregs(pid, thread_regs);
if (err < 0) {
err = -errno;
- printk(UM_KERN_ERR "copy_context_skas0 : PTRACE_SETREGS "
- "failed, pid = %d, errno = %d\n", pid, -err);
+ printk(UM_KERN_ERR "%s : PTRACE_SETREGS failed, pid = %d, errno = %d\n",
+ __func__, pid, -err);
return err;
}
err = put_fp_registers(pid, thread_fp_regs);
if (err < 0) {
- printk(UM_KERN_ERR "copy_context_skas0 : put_fp_registers "
- "failed, pid = %d, err = %d\n", pid, err);
+ printk(UM_KERN_ERR "%s : put_fp_registers failed, pid = %d, err = %d\n",
+ __func__, pid, err);
return err;
}
@@ -574,8 +571,8 @@ int copy_context_skas0(unsigned long new_stack, int pid)
err = ptrace(PTRACE_CONT, pid, 0, 0);
if (err) {
err = -errno;
- printk(UM_KERN_ERR "Failed to continue new process, pid = %d, "
- "errno = %d\n", pid, errno);
+ printk(UM_KERN_ERR "Failed to continue new process, pid = %d, errno = %d\n",
+ pid, errno);
return err;
}
@@ -583,8 +580,8 @@ int copy_context_skas0(unsigned long new_stack, int pid)
pid = data->parent_err;
if (pid < 0) {
- printk(UM_KERN_ERR "copy_context_skas0 - stub-parent reports "
- "error %d\n", -pid);
+ printk(UM_KERN_ERR "%s - stub-parent reports error %d\n",
+ __func__, -pid);
return pid;
}
@@ -594,8 +591,8 @@ int copy_context_skas0(unsigned long new_stack, int pid)
*/
wait_stub_done(pid);
if (child_data->child_err != STUB_DATA) {
- printk(UM_KERN_ERR "copy_context_skas0 - stub-child %d reports "
- "error %ld\n", pid, data->child_err);
+ printk(UM_KERN_ERR "%s - stub-child %d reports error %ld\n",
+ __func__, pid, data->child_err);
err = data->child_err;
goto out_kill;
}
@@ -603,8 +600,8 @@ int copy_context_skas0(unsigned long new_stack, int pid)
if (ptrace(PTRACE_OLDSETOPTIONS, pid, NULL,
(void *)PTRACE_O_TRACESYSGOOD) < 0) {
err = -errno;
- printk(UM_KERN_ERR "copy_context_skas0 : PTRACE_OLDSETOPTIONS "
- "failed, errno = %d\n", errno);
+ printk(UM_KERN_ERR "%s : PTRACE_OLDSETOPTIONS failed, errno = %d\n",
+ __func__, errno);
goto out_kill;
}
@@ -672,8 +669,8 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf)
kmalloc_ok = 0;
return 1;
default:
- printk(UM_KERN_ERR "Bad sigsetjmp return in "
- "start_idle_thread - %d\n", n);
+ printk(UM_KERN_ERR "Bad sigsetjmp return in %s - %d\n",
+ __func__, n);
fatal_sigsegv();
}
longjmp(*switch_buf, 1);
diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
index b89e2e0024c5..b70559b821df 100644
--- a/arch/x86/Makefile.um
+++ b/arch/x86/Makefile.um
@@ -1,6 +1,12 @@
# SPDX-License-Identifier: GPL-2.0
core-y += arch/x86/crypto/
+#
+# Disable SSE and other FP/SIMD instructions to match normal x86
+#
+KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx
+KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2
+
ifeq ($(CONFIG_X86_32),y)
START := 0x8048000
diff --git a/arch/x86/um/vdso/Makefile b/arch/x86/um/vdso/Makefile
index 6fbe97c52c99..6825e146a62f 100644
--- a/arch/x86/um/vdso/Makefile
+++ b/arch/x86/um/vdso/Makefile
@@ -61,7 +61,7 @@ CFLAGS_REMOVE_um_vdso.o = -pg -fprofile-arcs -ftest-coverage
#
quiet_cmd_vdso = VDSO $@
cmd_vdso = $(CC) -nostdlib -o $@ \
- $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
+ $(CC_FLAGS_LTO) $(VDSO_LDFLAGS) $(VDSO_LDFLAGS_$(filter %.lds,$(^F))) \
-Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
diff --git a/arch/x86/um/vdso/um_vdso.c b/arch/x86/um/vdso/um_vdso.c
index 2112b8d14668..ff0f3b4b6c45 100644
--- a/arch/x86/um/vdso/um_vdso.c
+++ b/arch/x86/um/vdso/um_vdso.c
@@ -17,8 +17,10 @@ int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
{
long ret;
- asm("syscall" : "=a" (ret) :
- "0" (__NR_clock_gettime), "D" (clock), "S" (ts) : "memory");
+ asm("syscall"
+ : "=a" (ret)
+ : "0" (__NR_clock_gettime), "D" (clock), "S" (ts)
+ : "rcx", "r11", "memory");
return ret;
}
@@ -29,8 +31,10 @@ int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
{
long ret;
- asm("syscall" : "=a" (ret) :
- "0" (__NR_gettimeofday), "D" (tv), "S" (tz) : "memory");
+ asm("syscall"
+ : "=a" (ret)
+ : "0" (__NR_gettimeofday), "D" (tv), "S" (tz)
+ : "rcx", "r11", "memory");
return ret;
}