ac6e56e6d7
23900-xzalloc.patch 24144-cpufreq-turbo-crash.patch 24148-shadow-pgt-dying-op-performance.patch 24155-x86-ioapic-EOI-after-migration.patch 24156-x86-ioapic-shared-vectors.patch 24157-x86-xstate-init.patch 24168-x86-vioapic-clear-remote_irr.patch - submit fixes for bnc#649209 and bnc#711892 xl-create-pv-with-qcow2-img.patch update suspend_evtchn_lock.patch - Update trace.c, merge patches from upstream 23050-xentrace_dynamic_tracebuffer_allocation.patch 23091-xentrace_fix_t_info_pages_calculation..patch 23092-xentrace_print_calculated_numbers_in_calculate_tbuf_size.patch 23093-xentrace_remove_gdprintk_usage_since_they_are_not_in_guest_context.patch 23094-xentrace_update_comments.patch 23095-xentrace_use_consistent_printk_prefix.patch 23128-xentrace_correct_formula_to_calculate_t_info_pages.patch 23129-xentrace_remove_unneeded_debug_printk.patch 23173-xentrace_Move_register_cpu_notifier_call_into_boot-time_init..patch 23239-xentrace_correct_overflow_check_for_number_of_per-cpu_trace_pages.patch 23308-xentrace_Move_the_global_variable_t_info_first_offset_into_calculate_tbuf_size.patch 23309-xentrace_Mark_data_size___read_mostly_because_its_only_written_once.patch 23310-xentrace_Remove_unneeded_cast_when_assigning_pointer_value_to_dst.patch 23404-xentrace_reduce_trace_buffer_size_to_something_mfn_offset_can_reach.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=160
68 lines
2.2 KiB
Diff
68 lines
2.2 KiB
Diff
# HG changeset patch
|
|
# User Jean Guyader <jean.guyader@eu.citrix.com>
|
|
# Date 1321002862 -3600
|
|
# Node ID a095cf28f2b6eeb8f5873c18eb18d4d7e5544e2c
|
|
# Parent 6534da595d695a4f2af12a64e46fb06219a0e4bc
|
|
Hypercall continuation cancelation in compat mode for XENMEM_get/set_pod_target
|
|
|
|
If copy_to_guest failed in the compat code after a continuation as been
|
|
done in the native code we need to cancel it so we won't reexecute the
|
|
hypercall but return from the hypercall with the appropriate error.
|
|
|
|
Signed-off-by: Jean Guyader <jean.guyader@eu.citrix.com>
|
|
Acked-by: Jan Beulich <jbeulich@suse.com>
|
|
Acked-by: Keir Fraser <keir@xen.org>
|
|
Committed-by: Jan Beulich <jbeulich@suse.com>
|
|
|
|
--- a/xen/arch/x86/domain.c
|
|
+++ b/xen/arch/x86/domain.c
|
|
@@ -1585,6 +1585,24 @@ void sync_vcpu_execstate(struct vcpu *v)
|
|
__arg; \
|
|
})
|
|
|
|
+void hypercall_cancel_continuation(void)
|
|
+{
|
|
+ struct cpu_user_regs *regs = guest_cpu_user_regs();
|
|
+ struct mc_state *mcs = ¤t->mc_state;
|
|
+
|
|
+ if ( test_bit(_MCSF_in_multicall, &mcs->flags) )
|
|
+ {
|
|
+ __clear_bit(_MCSF_call_preempted, &mcs->flags);
|
|
+ }
|
|
+ else
|
|
+ {
|
|
+ if ( !is_hvm_vcpu(current) )
|
|
+ regs->eip += 2; /* skip re-execute 'syscall' / 'int $xx' */
|
|
+ else
|
|
+ current->arch.hvm_vcpu.hcall_preempted = 0;
|
|
+ }
|
|
+}
|
|
+
|
|
unsigned long hypercall_create_continuation(
|
|
unsigned int op, const char *format, ...)
|
|
{
|
|
--- a/xen/arch/x86/x86_64/compat/mm.c
|
|
+++ b/xen/arch/x86/x86_64/compat/mm.c
|
|
@@ -133,7 +133,11 @@ int compat_arch_memory_op(int op, XEN_GU
|
|
XLAT_pod_target(&cmp, nat);
|
|
|
|
if ( copy_to_guest(arg, &cmp, 1) )
|
|
+ {
|
|
+ if ( rc == __HYPERVISOR_memory_op )
|
|
+ hypercall_cancel_continuation();
|
|
rc = -EFAULT;
|
|
+ }
|
|
|
|
break;
|
|
}
|
|
--- a/xen/include/xen/sched.h
|
|
+++ b/xen/include/xen/sched.h
|
|
@@ -560,6 +560,7 @@ void startup_cpu_idle_loop(void);
|
|
*/
|
|
unsigned long hypercall_create_continuation(
|
|
unsigned int op, const char *format, ...);
|
|
+void hypercall_cancel_continuation(void);
|
|
|
|
#define hypercall_preempt_check() (unlikely( \
|
|
softirq_pending(smp_processor_id()) | \
|