[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PULL 06/11] xen/pt: correctly handle PM status bit
From: Jan Beulich <jbeulich@xxxxxxxx> 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/xen/xen_pt_config_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c index 516236a..027ac32 100644 --- a/hw/xen/xen_pt_config_init.c +++ b/hw/xen/xen_pt_config_init.c @@ -948,7 +948,8 @@ static int xen_pt_pmcsr_reg_write(XenPCIPassthroughState *s, /* create value for writing to I/O device register */ throughable_mask = ~reg->emu_mask & valid_mask; - *val = XEN_PT_MERGE_VALUE(*val, dev_value, throughable_mask); + *val = XEN_PT_MERGE_VALUE(*val, dev_value & ~PCI_PM_CTRL_PME_STATUS, + throughable_mask); return 0; } -- 1.7.10.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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