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Thu, 2 Jul 2026 10:22:53 -0400 (EDT) Received: by mbp.qyliss.net (Postfix, from userid 1000) id 04B87845F8C2; Thu, 02 Jul 2026 15:44:23 +0200 (CEST) From: Alyssa Ross To: colbyt Subject: Re: [PATCH 5/5] host/rootfs: enable IPE in the host kernel In-Reply-To: <20260625202013.1417254-6-colby@colbyt.com> References: <20260625202013.1417254-1-colby@colbyt.com> <20260625202013.1417254-6-colby@colbyt.com> Date: Thu, 02 Jul 2026 15:44:22 +0200 Message-ID: <875x2xwlop.fsf@alyssa.is> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Message-ID-Hash: PTNOBRJEJKHSNEZ45ULBBOKGY7JZOP3H X-Message-ID-Hash: PTNOBRJEJKHSNEZ45ULBBOKGY7JZOP3H X-MailFrom: hi@alyssa.is X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; header-match-devel.spectrum-os.org-0; header-match-devel.spectrum-os.org-1; header-match-devel.spectrum-os.org-2; header-match-devel.spectrum-os.org-3; header-match-devel.spectrum-os.org-4; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: devel@spectrum-os.org X-Mailman-Version: 3.3.10 Precedence: list List-Id: Patches and low-level development discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable colbyt writes: > Enable the IPE LSM in the host kernel used by the Spectrum rootfs, > including the QEMU host-rootfs run path. > > The generated kernel config already enables audit, audit syscall support, > securityfs, and an LSM order containing ipe. Enabling SECURITY_IPE also > selects the dm-verity root-hash provider for the host rootfs. > > This only enables kernel support. It does not install an IPE policy. > > Signed-off-by: colbyt > --- > host/rootfs/default.nix | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/host/rootfs/default.nix b/host/rootfs/default.nix > index 6bfeefb..79baea4 100644 > --- a/host/rootfs/default.nix > +++ b/host/rootfs/default.nix > @@ -51,7 +51,11 @@ let > system.stateVersion =3D trivial.release; > }); >=20=20 > - kernel =3D linux_latest; > + kernel =3D linux_latest.override { > + structuredExtraConfig =3D with lib.kernel; { > + SECURITY_IPE =3D yes; > + }; > + }; Just noting that we'll get this for free when we update Nixpkgs, as it's now enabled in Nixpkgs' default kernel config. --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEARYKAB0WIQRV/neXydHjZma5XLJbRZGEIw/wogUCakZrNgAKCRBbRZGEIw/w omSIAQCkAzvmzR187dVJdGZDXa2GPD6jGzLiJdD8N8cwe7M0yAD+IE6XM9cspyZ1 Mg0FGEQfYk3xRSPc3XMLyQXmsbTvPws= =4VD6 -----END PGP SIGNATURE----- --=-=-=--