PKGBUILDs/community/libvirt/0004-qemu_firmware-Try-to-autofill-for-old-style-UEFI-spe.patch

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2020-01-10 13:33:46 +00:00
From 2547834c188536817662809880fa889c789e9e0e Mon Sep 17 00:00:00 2001
From: Michal Privoznik <mprivozn@redhat.com>
Date: Tue, 17 Dec 2019 17:45:50 +0100
Subject: [PATCH 4/4] qemu_firmware: Try to autofill for old style UEFI
specification
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
While we discourage people to use the old style of specifying
UEFI for their domains (the old style is putting path to the FW
image under /domain/os/loader/ whilst the new one is using
/domain/os/@firmware), some applications might have not adapted
yet. They still rely on libvirt autofilling NVRAM path and
figuring out NVRAM template when using the old way (notably
virt-install does this). We must preserve backcompat for this
previously supported config approach. However, since we really
want distro maintainers to leave --with-loader-nvram configure
option and rely on JSON descriptors, we need to implement
autofilling of NVRAM template for the old way too.
Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=1782778
RHEL: https://bugzilla.redhat.com/show_bug.cgi?id=1776949
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
---
src/qemu/qemu_firmware.c | 47 +++++++++++++++++++++++++++++++++++-----
1 file changed, 42 insertions(+), 5 deletions(-)
diff --git a/src/qemu/qemu_firmware.c b/src/qemu/qemu_firmware.c
index 41e05e570b..f045e7d69c 100644
--- a/src/qemu/qemu_firmware.c
+++ b/src/qemu/qemu_firmware.c
@@ -961,6 +961,21 @@ qemuFirmwareMatchDomain(const virDomainDef *def,
want = qemuFirmwareOSInterfaceTypeFromOsDefFirmware(def->os.firmware);
+ if (want == QEMU_FIRMWARE_OS_INTERFACE_NONE &&
+ def->os.loader) {
+ want = qemuFirmwareOSInterfaceTypeFromOsDefFirmware(def->os.loader->type);
+
+ if (fw->mapping.device != QEMU_FIRMWARE_DEVICE_FLASH ||
+ STRNEQ(def->os.loader->path, fw->mapping.data.flash.executable.filename)) {
+ VIR_DEBUG("Not matching FW interface %s or loader "
+ "path '%s' for user provided path '%s'",
+ qemuFirmwareDeviceTypeToString(fw->mapping.device),
+ fw->mapping.data.flash.executable.filename,
+ def->os.loader->path);
+ return false;
+ }
+ }
+
for (i = 0; i < fw->ninterfaces; i++) {
if (fw->interfaces[i] == want)
break;
@@ -1228,14 +1243,29 @@ qemuFirmwareFillDomain(virQEMUDriverPtr driver,
qemuFirmwarePtr *firmwares = NULL;
ssize_t nfirmwares = 0;
const qemuFirmware *theone = NULL;
+ bool needResult = true;
size_t i;
int ret = -1;
if (!(flags & VIR_QEMU_PROCESS_START_NEW))
return 0;
- if (def->os.firmware == VIR_DOMAIN_OS_DEF_FIRMWARE_NONE)
- return 0;
+ /* Fill in FW paths if either os.firmware is enabled, or
+ * loader path was provided with no nvram varstore. */
+ if (def->os.firmware == VIR_DOMAIN_OS_DEF_FIRMWARE_NONE) {
+ /* This is horrific check, but loosely said, if UEFI
+ * image was provided by the old method (by specifying
+ * its path in domain XML) but no template for NVRAM was
+ * specified and the varstore doesn't exist ... */
+ if (!virDomainDefHasOldStyleROUEFI(def) ||
+ def->os.loader->templt ||
+ virFileExists(def->os.loader->nvram))
+ return 0;
+
+ /* ... then we want to consult JSON FW descriptors first,
+ * but we don't want to fail if we haven't found a match. */
+ needResult = false;
+ }
if ((nfirmwares = qemuFirmwareFetchParsedConfigs(driver->privileged,
&firmwares, &paths)) < 0)
@@ -1251,9 +1281,16 @@ qemuFirmwareFillDomain(virQEMUDriverPtr driver,
}
if (!theone) {
- virReportError(VIR_ERR_OPERATION_FAILED,
- _("Unable to find any firmware to satisfy '%s'"),
- virDomainOsDefFirmwareTypeToString(def->os.firmware));
+ if (needResult) {
+ virReportError(VIR_ERR_OPERATION_FAILED,
+ _("Unable to find any firmware to satisfy '%s'"),
+ virDomainOsDefFirmwareTypeToString(def->os.firmware));
+ } else {
+ VIR_DEBUG("Unable to find NVRAM template for '%s', "
+ "falling back to old style",
+ NULLSTR(def->os.loader ? def->os.loader->path : NULL));
+ ret = 0;
+ }
goto cleanup;
}
--
2.24.1