[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 3/3] xen/MSI: Retrieve MSI msg from cached msi_desc->msg
We had cached the MSI msg in __write_msi_msg(), so we should retrieve the cached MSI msg directly, not to access the MSI address/data hardware registers again. Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx> CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> CC: xen-devel@xxxxxxxxxxxxxxxxxxxx --- arch/x86/pci/xen.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 4656099..7a74404 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -228,7 +228,7 @@ static int xen_hvm_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) return 1; list_for_each_entry(msidesc, &dev->msi_list, list) { - read_msi_msg(msidesc, &msg); + get_cached_msi_msg(msidesc, &msg); pirq = MSI_ADDR_EXT_DEST_ID(msg.address_hi) | ((msg.address_lo >> MSI_ADDR_DEST_ID_SHIFT) & 0xff); if (msg.data != XEN_PIRQ_MSI_DATA || -- 1.7.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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