tests/virhostdevtest.c implements a function called 'virHostdevHostSupportsPassthroughKVM', that is equal to 'qemuHostdevHostSupportsPassthroughLegacy' that is declared inside qemu/qemu_hostdev.c. This patch removes the duplicated code from both files and and puts it inside util/virhostdev.c, under the name virHostdev...KVM, which represents what the code does better than using 'Legacy'. Based-on-work-of: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com&gt; Signed-off-by: Daniel Henrique Barboza <danielhb413(a)gmail.com&gt; --- src/libvirt_private.syms | 1 + src/qemu/qemu_capabilities.c | 2 +- src/qemu/qemu_driver.c | 6 +++--- src/qemu/qemu_hostdev.c | 34 +--------------------------------- src/qemu/qemu_hostdev.h | 1 - src/util/virhostdev.c | 31 +++++++++++++++++++++++++++++++ src/util/virhostdev.h | 1 + tests/virhostdevtest.c | 31 ------------------------------- 8 files changed, 38 insertions(+), 69 deletions(-) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index a03cf0b645..a6747684ea 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2044,6 +2044,7 @@ virHostCPUStatsAssign; # util/virhostdev.h virHostdevFindUSBDevice; +virHostdevHostSupportsPassthroughKVM; virHostdevIsMdevDevice; virHostdevIsSCSIDevice; virHostdevManagerGetDefault; diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index a0b2ca73fb..515db0112f 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -5152,7 +5152,7 @@ static int virQEMUCapsFillDomainDeviceHostdevCaps(virQEMUCapsPtr qemuCaps, virDomainCapsDeviceHostdevPtr hostdev) { - bool supportsPassthroughKVM = qemuHostdevHostSupportsPassthroughLegacy(); + bool supportsPassthroughKVM = virHostdevHostSupportsPassthroughKVM(); bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); hostdev->supported = VIR_TRISTATE_BOOL_YES; diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index b2ac737d1f..c02482337a 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -13283,7 +13283,7 @@ qemuNodeDeviceDetachFlags(virNodeDevicePtr dev, int ret = -1; virNodeDeviceDefPtr def = NULL; char *xml = NULL; - bool legacy = qemuHostdevHostSupportsPassthroughLegacy(); + bool kvm = virHostdevHostSupportsPassthroughKVM(); bool vfio = qemuHostdevHostSupportsPassthroughVFIO(); virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr; @@ -13310,7 +13310,7 @@ qemuNodeDeviceDetachFlags(virNodeDevicePtr dev, if (!driverName) { if (vfio) { driverName = "vfio"; - } else if (legacy) { + } else if (kvm) { driverName = "kvm"; } else { virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", @@ -13329,7 +13329,7 @@ qemuNodeDeviceDetachFlags(virNodeDevicePtr dev, } virPCIDeviceSetStubDriver(pci, VIR_PCI_STUB_DRIVER_VFIO); } else if (STREQ(driverName, "kvm")) { - if (!legacy) { + if (!kvm) { virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s", _("KVM device assignment is currently not " "supported on this system")); diff --git a/src/qemu/qemu_hostdev.c b/src/qemu/qemu_hostdev.c index 4eb3f1d7f1..b6cb4d0980 100644 --- a/src/qemu/qemu_hostdev.c +++ b/src/qemu/qemu_hostdev.c @@ -132,44 +132,12 @@ qemuHostdevHostSupportsPassthroughVFIO(void) } -#if HAVE_LINUX_KVM_H -# include <linux/kvm.h> -bool -qemuHostdevHostSupportsPassthroughLegacy(void) -{ - int kvmfd = -1; - bool ret = false; - - if ((kvmfd = open("/dev/kvm", O_RDONLY)) < 0) - goto cleanup; - -# ifdef KVM_CAP_IOMMU - if ((ioctl(kvmfd, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU)) <= 0) - goto cleanup; - - ret = true; -# endif - - cleanup: - VIR_FORCE_CLOSE(kvmfd); - - return ret; -} -#else -bool -qemuHostdevHostSupportsPassthroughLegacy(void) -{ - return false; -} -#endif - - static bool qemuHostdevPreparePCIDevicesCheckSupport(virDomainHostdevDefPtr *hostdevs, size_t nhostdevs, virQEMUCapsPtr qemuCaps) { - bool supportsPassthroughKVM = qemuHostdevHostSupportsPassthroughLegacy(); + bool supportsPassthroughKVM = virHostdevHostSupportsPassthroughKVM(); bool supportsPassthroughVFIO = qemuHostdevHostSupportsPassthroughVFIO(); size_t i; diff --git a/src/qemu/qemu_hostdev.h b/src/qemu/qemu_hostdev.h index 41f254ab81..be6faa2c35 100644 --- a/src/qemu/qemu_hostdev.h +++ b/src/qemu/qemu_hostdev.h @@ -25,7 +25,6 @@ # include "qemu_conf.h" # include "domain_conf.h" -bool qemuHostdevHostSupportsPassthroughLegacy(void); bool qemuHostdevHostSupportsPassthroughVFIO(void); int qemuHostdevUpdateActiveMediatedDevices(virQEMUDriverPtr driver, diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c index 19ae001971..872528fdb2 100644 --- a/src/util/virhostdev.c +++ b/src/util/virhostdev.c @@ -2245,3 +2245,34 @@ virHostdevUpdateActiveDomainDevices(virHostdevManagerPtr mgr, return 0; } + +#if HAVE_LINUX_KVM_H +# include <linux/kvm.h> +bool +virHostdevHostSupportsPassthroughKVM(void) +{ + int kvmfd = -1; + bool ret = false; + + if ((kvmfd = open("/dev/kvm", O_RDONLY)) < 0) + goto cleanup; + +# ifdef KVM_CAP_IOMMU + if ((ioctl(kvmfd, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU)) <= 0) + goto cleanup; + + ret = true; +# endif + + cleanup: + VIR_FORCE_CLOSE(kvmfd); + + return ret; +} +#else +bool +virHostdevHostSupportsPassthroughKVM(void) +{ + return false; +} +#endif diff --git a/src/util/virhostdev.h b/src/util/virhostdev.h index 7263f320a2..32fa36cdef 100644 --- a/src/util/virhostdev.h +++ b/src/util/virhostdev.h @@ -203,4 +203,5 @@ int virHostdevPCINodeDeviceReset(virHostdevManagerPtr mgr, virPCIDevicePtr pci) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2); +bool virHostdevHostSupportsPassthroughKVM(void); #endif /* LIBVIRT_VIRHOSTDEV_H */ diff --git a/tests/virhostdevtest.c b/tests/virhostdevtest.c index 4e067b10d1..1258338949 100644 --- a/tests/virhostdevtest.c +++ b/tests/virhostdevtest.c @@ -126,37 +126,6 @@ myInit(void) return -1; } -# if HAVE_LINUX_KVM_H -# include <linux/kvm.h> -static bool -virHostdevHostSupportsPassthroughKVM(void) -{ - int kvmfd = -1; - bool ret = false; - - if ((kvmfd = open("/dev/kvm", O_RDONLY)) < 0) - goto cleanup; - -# ifdef KVM_CAP_IOMMU - if ((ioctl(kvmfd, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU)) <= 0) - goto cleanup; - - ret = true; -# endif - - cleanup: - VIR_FORCE_CLOSE(kvmfd); - - return ret; -} -# else -static bool -virHostdevHostSupportsPassthroughKVM(void) -{ - return false; -} -# endif - static int testVirHostdevPreparePCIHostdevs_unmanaged(void) { -- 2.20.1