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Peter Anvin" Subject: Re: kconfig does not accept a lower value for KVM_MAX_NR_VCPUS Message-ID: References: <03a04e86-c629-44df-9022-05c42b4c736f@gmx.de> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="8BgJX5zGcP5XDR3U" Content-Disposition: inline In-Reply-To: <03a04e86-c629-44df-9022-05c42b4c736f@gmx.de> --8BgJX5zGcP5XDR3U Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jan 19, 2025 at 12:04:04PM +0100, Toralf F=C3=B6rster wrote: > I was wondering why I cannot put a lower value here during make oldconfig: >=20 >=20 > Maximum number of vCPUs per KVM guest (KVM_MAX_NR_VCPUS) [1024] (NEW) 16 > Maximum number of vCPUs per KVM guest (KVM_MAX_NR_VCPUS) [1024] (NEW) 8 > Maximum number of vCPUs per KVM guest (KVM_MAX_NR_VCPUS) [1024] (NEW) >=20 Hi Toralf, =46rom arch/x86/kvm/Kconfig: >config KVM_MAX_NR_VCPUS > int "Maximum number of vCPUs per KVM guest" > depends on KVM > range 1024 4096 > default 4096 if MAXSMP > default 1024 > help > Set the maximum number of vCPUs per KVM guest. Larger values will incre= ase > the memory footprint of each KVM guest, regardless of how many vCPUs are > created for a given VM. I don't know your use case, but you can safely choose the default (1024). Thanks. --=20 An old man doll... just what I always wanted! - Clara --8BgJX5zGcP5XDR3U Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZ42Q+gAKCRD2uYlJVVFO o4+YAQCXy4KWvcbnFObWnVXjInsKyXUHAJRPteJnuJ6u1DlL5gEA3X39TPhmwNMq BW6VSoiw50OHIg6ZimjFJUpnG9UdmQk= =pcnc -----END PGP SIGNATURE----- --8BgJX5zGcP5XDR3U--