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Revert "xen PVonHVM: move shared_info to MMIO before kexec"

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This reverts commit 00e37bdb01.

During shutdown of PVHVM guests with more than 2VCPUs on certain
machines we can hit the race where the replaced shared_info is not
replaced fast enough and the PV time clock retries reading the same
area over and over without any any success and is stuck in an
infinite loop.

Acked-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2012-08-16 11:31:27 -04:00
parent 5bc6f9888d
commit ca08649eb5
5 changed files with 13 additions and 126 deletions
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2
include/xen/events.h
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@ -58,8 +58,6 @@ void notify_remote_via_irq(int irq);
void xen_irq_resume(void);
void xen_hvm_prepare_kexec(struct shared_info *sip, unsigned long pfn);
/* Clear an irq's pending state, in preparation for polling on it */
void xen_clear_irq_pending(int irq);
void xen_set_irq_pending(int irq);