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micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Z/3W7kebW6kr+ooI" Content-Disposition: inline In-Reply-To: --Z/3W7kebW6kr+ooI Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Thu, 3 Apr 2025 13:36:53 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Jan Beulich Cc: Andrew Cooper , Doug Goldstein , Stefano Stabellini , xen-devel@lists.xenproject.org Subject: Re: [PATCH v1 01/11] ci: prevent grub unpacking initramfs On Thu, Apr 03, 2025 at 01:29:16PM +0200, Jan Beulich wrote: > On 03.04.2025 13:04, Marek Marczykowski-G=C3=B3recki wrote: > > It fails on larger initramfs (~250MB one) and sometimes even smaller > > depending on memory size/memory map, let Linux do it. >=20 > Iirc grub only unpacks gzip-ed modules, so wouldn't a yet better approach > be to use a better compressing algorithm, which simply as a side effect > would keep grub from decompressing it, while at the same time moving > farther away from any critical boundaries? That should also make the test faster (if it's a significant difference). OTOH likely we wouldn't have found the issue with map_pages_to_xen(). --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --Z/3W7kebW6kr+ooI Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmfuctYACgkQ24/THMrX 1yzaHgf+M7bxiY0Y8Cod7GFvsKzYODdbuM5w6tf29WZ6mdFYTWF8pQd546ZLhr1R ccyJV7ABkD9t03ufZn4i81dlsLQaLn+FcMgYw06uDoEbIidW0EJImGFMQnDzHgMN R8kj0JCEZTYr7Ia8EavYuD9mtZ0Pxu2ehbLVtDfPhxVJ6RmEAW7+UdDnbUO7wmrA x5I8TxzJ4DxhKaLE0cx+Y5Di23Qc5PAxbsfYUF7CLEZ8P4tzNj90Cw45nIcQ5L2a kUrv3H4MlmD5ERjGVXaB4qFa/ASuQCePiyFZOP2SnIrjd8LXXTDMozhv/ODVYWfi TZeD78E9HFqC/YrsXZqAE2nPqBF2cA== =ddMy -----END PGP SIGNATURE----- --Z/3W7kebW6kr+ooI--