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xen: fixes for 4.15-rc8

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Merge tag 'for-linus-4.15-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "This contains two build fixes for clang and two fixes for rather
  unlikely situations in the Xen gntdev driver"

* tag 'for-linus-4.15-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/gntdev: Fix partial gntdev_mmap() cleanup
  xen/gntdev: Fix off-by-one error when unmapping with holes
  x86: xen: remove the use of VLAIS
  x86/xen/time: fix section mismatch for xen_init_time_ops()
This commit is contained in:
Linus Torvalds 2018-01-12 10:00:15 -08:00
commit aefd140437
3 changed files with 8 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/xen/mmu_pv.c
View File

@ -1325,20 +1325,18 @@ static void xen_flush_tlb_others(const struct cpumask *cpus,
{
struct {
struct mmuext_op op;
#ifdef CONFIG_SMP
DECLARE_BITMAP(mask, num_processors);
#else
DECLARE_BITMAP(mask, NR_CPUS);
#endif
} *args;
struct multicall_space mcs;
const size_t mc_entry_size = sizeof(args->op) +
sizeof(args->mask[0]) * BITS_TO_LONGS(num_possible_cpus());
trace_xen_mmu_flush_tlb_others(cpus, info->mm, info->start, info->end);
if (cpumask_empty(cpus))
return; /* nothing to do */
mcs = xen_mc_entry(sizeof(*args));
mcs = xen_mc_entry(mc_entry_size);
args = mcs.args;
args->op.arg2.vcpumask = to_cpumask(args->mask);

2
arch/x86/xen/xen-ops.h
View File

@ -72,7 +72,7 @@ u64 xen_clocksource_read(void);
void xen_setup_cpu_clockevents(void);
void xen_save_time_memory_area(void);
void xen_restore_time_memory_area(void);
void __init xen_init_time_ops(void);
void __ref xen_init_time_ops(void);
void __init xen_hvm_init_time_ops(void);
irqreturn_t xen_debug_interrupt(int irq, void *dev_id);

8
drivers/xen/gntdev.c
View File

@ -380,10 +380,8 @@ static int unmap_grant_pages(struct grant_map *map, int offset, int pages)
}
range = 0;
while (range < pages) {
if (map->unmap_ops[offset+range].handle == -1) {
range--;
if (map->unmap_ops[offset+range].handle == -1)
break;
}
range++;
}
err = __unmap_grant_pages(map, offset, range);
@ -1073,8 +1071,10 @@ unlock_out:
out_unlock_put:
mutex_unlock(&priv->lock);
out_put_map:
if (use_ptemod)
if (use_ptemod) {
map->vma = NULL;
unmap_grant_pages(map, 0, map->count);
}
gntdev_put_map(priv, map);
return err;
}