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Fri, 10 Jul 2026 11:05:39 -0700 (PDT) X-Received: by 2002:a05:600d:101:b0:48e:8eb0:4957 with SMTP id 5b1f17b1804b1-493f2a85ad4mr37221155e9.2.1783706739428; Fri, 10 Jul 2026 11:05:39 -0700 (PDT) To: devel@lists.libvirt.org Subject: [PATCH 3/6] qemu: validate that CPU vlen is only used with RISC-V Date: Fri, 10 Jul 2026 20:05:20 +0200 Message-ID: <20260710180523.54387-4-heinrich.schuchardt@canonical.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260710180523.54387-1-heinrich.schuchardt@canonical.com> References: <20260710180523.54387-1-heinrich.schuchardt@canonical.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Message-ID-Hash: 42F2JSFS3D5JKF62BYJL3WZPS65DFYFO X-Message-ID-Hash: 42F2JSFS3D5JKF62BYJL3WZPS65DFYFO X-MailFrom: heinrich.schuchardt@canonical.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-devel.lists.libvirt.org-0; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Heinrich Schuchardt X-Mailman-Version: 3.3.10 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Heinrich Schuchardt via Devel Reply-To: Heinrich Schuchardt X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1783707475303158500 Content-Type: text/plain; charset="utf-8" The RISC-V vector register length is only relevant for RISC-V guest CPUs. Reject if configured for any other architecture. Signed-off-by: Heinrich Schuchardt --- src/qemu/qemu_validate.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c index 439d4b1916..86ace2a8f6 100644 --- a/src/qemu/qemu_validate.c +++ b/src/qemu/qemu_validate.c @@ -451,6 +451,15 @@ qemuValidateDomainDefCpu(virQEMUDriver *driver, } } =20 + if (cpu->vlen) { + if (!ARCH_IS_RISCV(def->os.arch)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("CPU vector length specification is not suppo= rted for '%1$s' architecture"), + virArchToString(def->os.arch)); + return -1; + } + } + if (cpu->model || cpu->mode !=3D VIR_CPU_MODE_CUSTOM) { switch ((virCPUMode) cpu->mode) { case VIR_CPU_MODE_HOST_PASSTHROUGH: --=20 2.53.0