Commit 4f7dbc7f authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'x86-fixes-for-linus' of...

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: more general identifier for Phoenix BIOS
  AMD IOMMU: check for next_bit also in unmapped area
  AMD IOMMU: fix fullflush comparison length
  AMD IOMMU: enable device isolation per default
  AMD IOMMU: add parameter to disable device isolation
  x86, PEBS/DS: fix code flow in ds_request()
  x86: add rdtsc barrier to TSC sync check
  xen: fix scrub_page()
  x86: fix es7000 compiling
  x86, bts: fix unlock problem in ds.c
  x86, voyager: fix smp generic helper voyager breakage
  x86: move iomap.h to the new include location
parents 9f92f471 73f56c0d
......@@ -294,7 +294,9 @@ and is between 256 and 4096 characters. It is defined in the file
Possible values are:
isolate - enable device isolation (each device, as far
as possible, will get its own protection
domain)
domain) [default]
share - put every device behind one IOMMU into the
same protection domain
fullflush - enable flushing of IO/TLB entries when
they are unmapped. Otherwise they are
flushed before they will be reused, which
......
......@@ -167,9 +167,12 @@ config GENERIC_PENDING_IRQ
config X86_SMP
bool
depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)
select USE_GENERIC_SMP_HELPERS
default y
config USE_GENERIC_SMP_HELPERS
def_bool y
depends on SMP
config X86_32_SMP
def_bool y
depends on X86_32 && SMP
......
......@@ -537,7 +537,7 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom,
address >>= PAGE_SHIFT;
iommu_area_free(dom->bitmap, address, pages);
if (address + pages >= dom->next_bit)
if (address >= dom->next_bit)
dom->need_flush = true;
}
......
......@@ -121,7 +121,7 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
unsigned amd_iommu_aperture_order = 26; /* size of aperture in power of 2 */
int amd_iommu_isolate; /* if 1, device isolation is enabled */
int amd_iommu_isolate = 1; /* if 1, device isolation is enabled */
bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
......@@ -1213,7 +1213,9 @@ static int __init parse_amd_iommu_options(char *str)
for (; *str; ++str) {
if (strncmp(str, "isolate", 7) == 0)
amd_iommu_isolate = 1;
if (strncmp(str, "fullflush", 11) == 0)
if (strncmp(str, "share", 5) == 0)
amd_iommu_isolate = 0;
if (strncmp(str, "fullflush", 9) == 0)
amd_iommu_unmap_flush = true;
}
......
......@@ -236,17 +236,33 @@ static inline struct ds_context *ds_alloc_context(struct task_struct *task)
struct ds_context *context = *p_context;
if (!context) {
spin_unlock(&ds_lock);
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
if (!context) {
spin_lock(&ds_lock);
return NULL;
}
context->ds = kzalloc(ds_cfg.sizeof_ds, GFP_KERNEL);
if (!context->ds) {
kfree(context);
spin_lock(&ds_lock);
return NULL;
}
spin_lock(&ds_lock);
/*
* Check for race - another CPU could have allocated
* it meanwhile:
*/
if (*p_context) {
kfree(context->ds);
kfree(context);
return *p_context;
}
*p_context = context;
context->this = p_context;
......@@ -384,14 +400,15 @@ static int ds_request(struct task_struct *task, void *base, size_t size,
spin_lock(&ds_lock);
if (!check_tracer(task))
return -EPERM;
error = -ENOMEM;
context = ds_alloc_context(task);
if (!context)
goto out_unlock;
error = -EPERM;
if (!check_tracer(task))
goto out_unlock;
error = -EALREADY;
if (context->owner[qual] == current)
goto out_unlock;
......
......@@ -250,31 +250,24 @@ int __init find_unisys_acpi_oem_table(unsigned long *oem_addr)
{
struct acpi_table_header *header = NULL;
int i = 0;
acpi_size tbl_size;
while (ACPI_SUCCESS(acpi_get_table_with_size("OEM1", i++, &header, &tbl_size))) {
while (ACPI_SUCCESS(acpi_get_table("OEM1", i++, &header))) {
if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) {
struct oem_table *t = (struct oem_table *)header;
oem_addrX = t->OEMTableAddr;
oem_size = t->OEMTableSize;
early_acpi_os_unmap_memory(header, tbl_size);
*oem_addr = (unsigned long)__acpi_map_table(oem_addrX,
oem_size);
return 0;
}
early_acpi_os_unmap_memory(header, tbl_size);
}
return -1;
}
void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr)
{
if (!oem_addr)
return;
__acpi_unmap_table((char *)oem_addr, oem_size);
}
#endif
......
......@@ -764,7 +764,7 @@ static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
.callback = dmi_low_memory_corruption,
.ident = "Phoenix BIOS",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies, LTD"),
DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"),
},
},
#endif
......
......@@ -46,7 +46,9 @@ static __cpuinit void check_tsc_warp(void)
cycles_t start, now, prev, end;
int i;
rdtsc_barrier();
start = get_cycles();
rdtsc_barrier();
/*
* The measurement runs for 20 msecs:
*/
......@@ -61,7 +63,9 @@ static __cpuinit void check_tsc_warp(void)
*/
__raw_spin_lock(&sync_lock);
prev = last_tsc;
rdtsc_barrier();
now = get_cycles();
rdtsc_barrier();
last_tsc = now;
__raw_spin_unlock(&sync_lock);
......
......@@ -7,6 +7,7 @@
* This file provides all the same external entries as smp.c but uses
* the voyager hal to provide the functionality
*/
#include <linux/cpu.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/kernel_stat.h>
......@@ -1790,6 +1791,17 @@ void __init smp_setup_processor_id(void)
x86_write_percpu(cpu_number, hard_smp_processor_id());
}
static void voyager_send_call_func(cpumask_t callmask)
{
__u32 mask = cpus_addr(callmask)[0] & ~(1 << smp_processor_id());
send_CPI(mask, VIC_CALL_FUNCTION_CPI);
}
static void voyager_send_call_func_single(int cpu)
{
send_CPI(1 << cpu, VIC_CALL_FUNCTION_SINGLE_CPI);
}
struct smp_ops smp_ops = {
.smp_prepare_boot_cpu = voyager_smp_prepare_boot_cpu,
.smp_prepare_cpus = voyager_smp_prepare_cpus,
......@@ -1799,6 +1811,6 @@ struct smp_ops smp_ops = {
.smp_send_stop = voyager_smp_send_stop,
.smp_send_reschedule = voyager_smp_send_reschedule,
.send_call_func_ipi = native_send_call_func_ipi,
.send_call_func_single_ipi = native_send_call_func_single_ipi,
.send_call_func_ipi = voyager_send_call_func,
.send_call_func_single_ipi = voyager_send_call_func_single,
};
......@@ -122,14 +122,7 @@ static struct timer_list balloon_timer;
static void scrub_page(struct page *page)
{
#ifdef CONFIG_XEN_SCRUB_PAGES
if (PageHighMem(page)) {
void *v = kmap(page);
clear_page(v);
kunmap(v);
} else {
void *v = page_address(page);
clear_page(v);
}
clear_highpage(page);
#endif
}
......
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