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Merge tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Browse Source 
Pull xen updates from David Vrabel:
 "Features and fixes for 4.8-rc0:

   - ACPI support for guests on ARM platforms.
   - Generic steal time support for arm and x86.
   - Support cases where kernel cpu is not Xen VCPU number (e.g., if
     in-guest kexec is used).
   - Use the system workqueue instead of a custom workqueue in various
     places"

* tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (47 commits)
  xen: add static initialization of steal_clock op to xen_time_ops
  xen/pvhvm: run xen_vcpu_setup() for the boot CPU
  xen/evtchn: use xen_vcpu_id mapping
  xen/events: fifo: use xen_vcpu_id mapping
  xen/events: use xen_vcpu_id mapping in events_base
  x86/xen: use xen_vcpu_id mapping when pointing vcpu_info to shared_info
  x86/xen: use xen_vcpu_id mapping for HYPERVISOR_vcpu_op
  xen: introduce xen_vcpu_id mapping
  x86/acpi: store ACPI ids from MADT for future usage
  x86/xen: update cpuid.h from Xen-4.7
  xen/evtchn: add IOCTL_EVTCHN_RESTRICT
  xen-blkback: really don't leak mode property
  xen-blkback: constify instance of "struct attribute_group"
  xen-blkfront: prefer xenbus_scanf() over xenbus_gather()
  xen-blkback: prefer xenbus_scanf() over xenbus_gather()
  xen: support runqueue steal time on xen
  arm/xen: add support for vm_assist hypercall
  xen: update xen headers
  xen-pciback: drop superfluous variables
  xen-pciback: short-circuit read path used for merging write values
  ...
This commit is contained in:
Linus Torvalds
2016-07-27 11:35:37 -07:00
parent e831101a73 d34c30cc1f
commit 08fd8c1768
59 changed files with 1150 additions and 493 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
drivers/firmware/efi/efi.c
View File

@@ -568,12 +568,14 @@ device_initcall(efi_load_efivars);
FIELD_SIZEOF(struct efi_fdt_params, field) \
}
static __initdata struct {
struct params {
const char name[32];
const char propname[32];
int offset;
int size;
} dt_params[] = {
};
static __initdata struct params fdt_params[] = {
UEFI_PARAM("System Table", "linux,uefi-system-table", system_table),
UEFI_PARAM("MemMap Address", "linux,uefi-mmap-start", mmap),
UEFI_PARAM("MemMap Size", "linux,uefi-mmap-size", mmap_size),
@@ -581,44 +583,91 @@ static __initdata struct {
UEFI_PARAM("MemMap Desc. Version", "linux,uefi-mmap-desc-ver", desc_ver)
};
static __initdata struct params xen_fdt_params[] = {
UEFI_PARAM("System Table", "xen,uefi-system-table", system_table),
UEFI_PARAM("MemMap Address", "xen,uefi-mmap-start", mmap),
UEFI_PARAM("MemMap Size", "xen,uefi-mmap-size", mmap_size),
UEFI_PARAM("MemMap Desc. Size", "xen,uefi-mmap-desc-size", desc_size),
UEFI_PARAM("MemMap Desc. Version", "xen,uefi-mmap-desc-ver", desc_ver)
};
#define EFI_FDT_PARAMS_SIZE ARRAY_SIZE(fdt_params)
static __initdata struct {
const char *uname;
const char *subnode;
struct params *params;
} dt_params[] = {
{ "hypervisor", "uefi", xen_fdt_params },
{ "chosen", NULL, fdt_params },
};
struct param_info {
int found;
void *params;
const char *missing;
};
static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
int depth, void *data)
static int __init __find_uefi_params(unsigned long node,
struct param_info *info,
struct params *params)
{
struct param_info *info = data;
const void *prop;
void *dest;
u64 val;
int i, len;
if (depth != 1 || strcmp(uname, "chosen") != 0)
return 0;
for (i = 0; i < ARRAY_SIZE(dt_params); i++) {
prop = of_get_flat_dt_prop(node, dt_params[i].propname, &len);
if (!prop)
for (i = 0; i < EFI_FDT_PARAMS_SIZE; i++) {
prop = of_get_flat_dt_prop(node, params[i].propname, &len);
if (!prop) {
info->missing = params[i].name;
return 0;
dest = info->params + dt_params[i].offset;
}
dest = info->params + params[i].offset;
info->found++;
val = of_read_number(prop, len / sizeof(u32));
if (dt_params[i].size == sizeof(u32))
if (params[i].size == sizeof(u32))
*(u32 *)dest = val;
else
*(u64 *)dest = val;
if (efi_enabled(EFI_DBG))
pr_info(" %s: 0x%0*llx\n", dt_params[i].name,
dt_params[i].size * 2, val);
pr_info(" %s: 0x%0*llx\n", params[i].name,
params[i].size * 2, val);
}
return 1;
}
static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
int depth, void *data)
{
struct param_info *info = data;
int i;
for (i = 0; i < ARRAY_SIZE(dt_params); i++) {
const char *subnode = dt_params[i].subnode;
if (depth != 1 || strcmp(uname, dt_params[i].uname) != 0) {
info->missing = dt_params[i].params[0].name;
continue;
}
if (subnode) {
node = of_get_flat_dt_subnode_by_name(node, subnode);
if (node < 0)
return 0;
}
return __find_uefi_params(node, info, dt_params[i].params);
}
return 0;
}
int __init efi_get_fdt_params(struct efi_fdt_params *params)
{
struct param_info info;
@@ -634,7 +683,7 @@ int __init efi_get_fdt_params(struct efi_fdt_params *params)
pr_info("UEFI not found.\n");
else if (!ret)
pr_err("Can't find '%s' in device tree!\n",
dt_params[info.found].name);
info.missing);
return ret;
}