I'm announcing the release of the 5.4.131 kernel.
All users of the 5.4 kernel series must upgrade.
The updated 5.4.y git tree can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.4.y
and can be browsed at the normal kernel.org git web browser:
https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary
thanks,
greg k-h
------------
Makefile | 2 +-
arch/s390/include/asm/stacktrace.h | 18 +++++++++++-------
arch/x86/kvm/svm.c | 33 ++++++++++++++++++++++-----------
drivers/xen/events/events_base.c | 23 +++++++++++++++++++----
4 files changed, 53 insertions(+), 23 deletions(-)
Alper Gun (1):
KVM: SVM: Call SEV Guest Decommission if ASID binding fails
David Rientjes (1):
KVM: SVM: Periodically schedule when unregistering regions on destroy
Greg Kroah-Hartman (1):
Linux 5.4.131
Heiko Carstens (1):
s390/stack: fix possible register corruption with stack switch helper
Juergen Gross (1):
xen/events: reset active flag for lateeoi events later
diff --git a/Makefile b/Makefile
index 4256dd594d18..5e8716dbbadc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 5
PATCHLEVEL = 4
-SUBLEVEL = 130
+SUBLEVEL = 131
EXTRAVERSION =
NAME = Kleptomaniac Octopus
diff --git a/arch/s390/include/asm/stacktrace.h b/arch/s390/include/asm/stacktrace.h
index 3679d224fd3c..6836532f8d1a 100644
--- a/arch/s390/include/asm/stacktrace.h
+++ b/arch/s390/include/asm/stacktrace.h
@@ -79,12 +79,16 @@ struct stack_frame {
CALL_ARGS_4(arg1, arg2, arg3, arg4); \
register unsigned long r4 asm("6") = (unsigned long)(arg5)
-#define CALL_FMT_0 "=&d" (r2) :
-#define CALL_FMT_1 "+&d" (r2) :
-#define CALL_FMT_2 CALL_FMT_1 "d" (r3),
-#define CALL_FMT_3 CALL_FMT_2 "d" (r4),
-#define CALL_FMT_4 CALL_FMT_3 "d" (r5),
-#define CALL_FMT_5 CALL_FMT_4 "d" (r6),
+/*
+ * To keep this simple mark register 2-6 as being changed (volatile)
+ * by the called function, even though register 6 is saved/nonvolatile.
+ */
+#define CALL_FMT_0 "=&d" (r2)
+#define CALL_FMT_1 "+&d" (r2)
+#define CALL_FMT_2 CALL_FMT_1, "+&d" (r3)
+#define CALL_FMT_3 CALL_FMT_2, "+&d" (r4)
+#define CALL_FMT_4 CALL_FMT_3, "+&d" (r5)
+#define CALL_FMT_5 CALL_FMT_4, "+&d" (r6)
#define CALL_CLOBBER_5 "0", "1", "14", "cc", "memory"
#define CALL_CLOBBER_4 CALL_CLOBBER_5
@@ -105,7 +109,7 @@ struct stack_frame {
" brasl 14,%[_fn]\n" \
" la 15,0(%[_prev])\n" \
: [_prev] "=&a" (prev), CALL_FMT_##nr \
- [_stack] "a" (stack), \
+ : [_stack] "a" (stack), \
[_bc] "i" (offsetof(struct stack_frame, back_chain)), \
[_fn] "X" (fn) : CALL_CLOBBER_##nr); \
r2; \
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 074cd170912a..7341d22ed04f 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1794,9 +1794,25 @@ static void sev_asid_free(struct kvm *kvm)
__sev_asid_free(sev->asid);
}
-static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
+static void sev_decommission(unsigned int handle)
{
struct sev_data_decommission *decommission;
+
+ if (!handle)
+ return;
+
+ decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
+ if (!decommission)
+ return;
+
+ decommission->handle = handle;
+ sev_guest_decommission(decommission, NULL);
+
+ kfree(decommission);
+}
+
+static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
+{
struct sev_data_deactivate *data;
if (!handle)
@@ -1814,15 +1830,7 @@ static void sev_unbind_asid(struct kvm *kvm, unsigned int handle)
sev_guest_df_flush(NULL);
kfree(data);
- decommission = kzalloc(sizeof(*decommission), GFP_KERNEL);
- if (!decommission)
- return;
-
- /* decommission handle */
- decommission->handle = handle;
- sev_guest_decommission(decommission, NULL);
-
- kfree(decommission);
+ sev_decommission(handle);
}
static struct page **sev_pin_memory(struct kvm *kvm, unsigned long uaddr,
@@ -1960,6 +1968,7 @@ static void sev_vm_destroy(struct kvm *kvm)
list_for_each_safe(pos, q, head) {
__unregister_enc_region_locked(kvm,
list_entry(pos, struct enc_region, list));
+ cond_resched();
}
}
@@ -6475,8 +6484,10 @@ static int sev_launch_start(struct kvm *kvm, struct kvm_sev_cmd *argp)
/* Bind ASID to this guest */
ret = sev_bind_asid(kvm, start->handle, error);
- if (ret)
+ if (ret) {
+ sev_decommission(start->handle);
goto e_free_session;
+ }
/* return handle to userspace */
params.handle = start->handle;
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 9cc77f039779..de825df4abf6 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -525,6 +525,9 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
}
info->eoi_time = 0;
+
+ /* is_active hasn't been reset yet, do it now. */
+ smp_store_release(&info->is_active, 0);
do_unmask(info, EVT_MASK_REASON_EOI_PENDING);
}
@@ -1781,10 +1784,22 @@ static void lateeoi_ack_dynirq(struct irq_data *data)
struct irq_info *info = info_for_irq(data->irq);
evtchn_port_t evtchn = info ? info->evtchn : 0;
- if (VALID_EVTCHN(evtchn)) {
- do_mask(info, EVT_MASK_REASON_EOI_PENDING);
- ack_dynirq(data);
- }
+ if (!VALID_EVTCHN(evtchn))
+ return;
+
+ do_mask(info, EVT_MASK_REASON_EOI_PENDING);
+
+ if (unlikely(irqd_is_setaffinity_pending(data)) &&
+ likely(!irqd_irq_disabled(data))) {
+ do_mask(info, EVT_MASK_REASON_TEMPORARY);
+
+ clear_evtchn(evtchn);
+
+ irq_move_masked_irq(data);
+
+ do_unmask(info, EVT_MASK_REASON_TEMPORARY);
+ } else
+ clear_evtchn(evtchn);
}
static void lateeoi_mask_ack_dynirq(struct irq_data *data)
On 2021/7/11 19:21, Greg Kroah-Hartman wrote:
> I'm announcing the release of the 5.4.131 kernel.
>
> All users of the 5.4 kernel series must upgrade.
>
> The updated 5.4.y git tree can be found at:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.4.y
> and can be browsed at the normal kernel.org git web browser:
> https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary
>
> thanks,
>
> greg k-h
>
Tested on arm64 and x86 for 5.4.131,
Kernel repo:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
Branch: linux-5.4.y
Version: 5.4.131
Commit: e8d9b740a5503f5bd2948a51a0c3fa564c82cfe3
Compiler: gcc version 7.3.0 (GCC)
arm64:
--------------------------------------------------------------------
Testcase Result Summary:
total: 8905
passed: 8905
failed: 0
timeout: 0
--------------------------------------------------------------------
x86:
--------------------------------------------------------------------
Testcase Result Summary:
total: 8905
passed: 8905
failed: 0
timeout: 0
--------------------------------------------------------------------
Tested-by: Hulk Robot <[email protected]>