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