[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [qemu-xen-4.3-testing] xen/pt: correctly handle PM status bit
commit 6bfd2cd948aa1bed3272bf41c838cb11b9175234 Author: Jan Beulich <jbeulich@xxxxxxxx> AuthorDate: Wed Jun 10 14:14:25 2015 +0100 Commit: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> CommitDate: Wed Jun 10 14:14:25 2015 +0100 xen/pt: correctly handle PM status bit xen_pt_pmcsr_reg_write() needs an adjustment to deal with the RW1C nature of the not passed through bit 15 (PCI_PM_CTRL_PME_STATUS). This is a preparatory patch for XSA-131. Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Reviewed-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> --- hw/pass-through.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/hw/pass-through.c b/hw/pass-through.c index d73a137..7d4ef0e 100644 --- a/hw/pass-through.c +++ b/hw/pass-through.c @@ -3784,7 +3784,8 @@ static int pt_pmcsr_reg_write(struct pt_dev *ptdev, /* create value for writing to I/O device register */ throughable_mask = ~reg->emu_mask & valid_mask; - *value = PT_MERGE_VALUE(*value, dev_value, throughable_mask); + *value = PT_MERGE_VALUE(*value, dev_value & ~PCI_PM_CTRL_PME_STATUS, + throughable_mask); if (!ptdev->power_mgmt) return 0; -- generated by git-patchbot for /home/xen/git/qemu-xen-4.3-testing.git _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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