Author: hselasky Date: Wed Jun 17 07:41:53 2015 New Revision: 284503 URL: https://svnweb.freebsd.org/changeset/base/284503
Log: MFC r284012: Disable VGA PCI interrupts until a chipset driver is loaded for VGA PCI devices. Else unhandled display adapter interrupts might freeze the CPU or consume a lot of CPU. PR: 156596 Modified: stable/10/sys/dev/pci/vga_pci.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/pci/vga_pci.c ============================================================================== --- stable/10/sys/dev/pci/vga_pci.c Wed Jun 17 07:38:50 2015 (r284502) +++ stable/10/sys/dev/pci/vga_pci.c Wed Jun 17 07:41:53 2015 (r284503) @@ -125,6 +125,13 @@ vga_pci_is_boot_display(device_t dev) if ((config & (PCIM_CMD_PORTEN | PCIM_CMD_MEMEN)) == 0) return (0); + /* + * Disable interrupts until a chipset driver is loaded for + * this PCI device. Else unhandled display adapter interrupts + * might freeze the CPU. + */ + pci_write_config(dev, PCIR_COMMAND, config | PCIM_CMD_INTxDIS, 2); + /* This video card is the boot display: record its unit number. */ vga_pci_default_unit = unit; device_set_flags(dev, 1); _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"