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ppc patch queue for 2021-04-21

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Here's what I hope is the last ppc related pull request for qemu-6.0.
 
 The 2 patches here revert a behavioural change that after further
 discussion we concluded was a bad idea (adding a timeout for
 possibly-failed hot unplug requests).  Instead it implements a
 different approach to the original problem: we again let unplug
 requests the guest doesn't respond to remain pending indefinitely, but
 no longer allow those to block attempts to retry the same unplug
 again.
 
 The change is a bit more complex than I'd like for this late in the
 freeze.  Nonetheless, I think it's important to merge this for 6.0, so
 we don't allow a release which has the probably-a-bad-idea timeout
 behaviour.
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Merge remote-tracking branch 'remotes/dg-gitlab/tags/ppc-for-6.0-20210412' into staging

ppc patch queue for 2021-04-21

Here's what I hope is the last ppc related pull request for qemu-6.0.

The 2 patches here revert a behavioural change that after further
discussion we concluded was a bad idea (adding a timeout for
possibly-failed hot unplug requests).  Instead it implements a
different approach to the original problem: we again let unplug
requests the guest doesn't respond to remain pending indefinitely, but
no longer allow those to block attempts to retry the same unplug
again.

The change is a bit more complex than I'd like for this late in the
freeze.  Nonetheless, I think it's important to merge this for 6.0, so
we don't allow a release which has the probably-a-bad-idea timeout
behaviour.

# gpg: Signature made Mon 12 Apr 2021 06:25:58 BST
# gpg:                using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dg-gitlab/tags/ppc-for-6.0-20210412:
  spapr.c: always pulse guest IRQ in spapr_core_unplug_request()
  spapr: rollback 'unplug timeout' for CPU hotunplugs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2021-04-13 13:05:07 +01:00
commit dce628a97f
5 changed files with 10 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/hw/ppc/spapr_drc.h
View file

@ -187,8 +187,6 @@ typedef struct SpaprDrc {
bool unplug_requested;
void *fdt;
int fdt_start_offset;
QEMUTimer *unplug_timeout_timer;
} SpaprDrc;
struct SpaprMachineState;
@ -211,8 +209,6 @@ typedef struct SpaprDrcClass {
int (*dt_populate)(SpaprDrc *drc, struct SpaprMachineState *spapr,
void *fdt, int *fdt_start_offset, Error **errp);
int unplug_timeout_seconds;
} SpaprDrcClass;
typedef struct SpaprDrcPhysical {
@ -248,7 +244,6 @@ int spapr_dt_drc(void *fdt, int offset, Object *owner, uint32_t drc_type_mask);
*/
void spapr_drc_attach(SpaprDrc *drc, DeviceState *d);
void spapr_drc_unplug_request(SpaprDrc *drc);
int spapr_drc_unplug_timeout_remaining_sec(SpaprDrc *drc);
/*
* Reset all DRCs, causing pending hot-plug/unplug requests to complete.

8
include/qemu/timer.h
View file

@ -797,14 +797,6 @@ static inline int64_t get_max_clock_jump(void)
return 60 * NANOSECONDS_PER_SECOND;
}
/**
* timer_deadline_ms:
*
* Returns the remaining miliseconds for @timer to expire, or zero
* if the timer is no longer pending.
*/
int64_t timer_deadline_ms(QEMUTimer *timer);
/*
* Low level clock functions
*/