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h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=BkHCl/rH63QzKibWmLOv4INzCWKRM+7tTMVIZL+26IaeiqrhOsT/M5wKut2HOTmK+ D1U3cwXG8xEeRoTZVpwGVTY3dkBb9Y3WUdjHdWoMpCA8BRJ61XuB32hAD+7/SIcmBW s8JemP6NpC7VzX6M2A8+ydOB4WCzNOR6y/UbO4RTpgtSCMe4kGlaKaAB3G2cul9vyj NdCgq/hNu6lWWle9bUz0FwVpnp4qvnn4614o4m64k5Pe+qiw2Qitr8JbGuDD949P+J nvMtMnR0rmRjnjDEktqE39ymxhsrNd4JFbESpfmw3ii+gMEta3Fx4uAJWD7i4Rp7FM Bp51bk3jpxvmA== Date: Mon, 15 Jan 2024 11:16:19 +0200 From: Mike Rapoport To: Borislav Petkov Cc: Vlastimil Babka , Dave Hansen , Michael Roth , x86@kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, pbonzini@redhat.com, seanjc@google.com, vkuznets@redhat.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, tobin@ibm.com, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, jarkko@kernel.org, ashish.kalra@amd.com, nikunj.dadhania@amd.com, pankaj.gupta@amd.com, liam.merwick@oracle.com, zhi.a.wang@intel.com, Brijesh Singh Subject: Re: [PATCH v1 11/26] x86/sev: Invalidate pages from the direct map when adding them to the RMP table Message-ID: References: <20231230161954.569267-1-michael.roth@amd.com> <20231230161954.569267-12-michael.roth@amd.com> <20240112200751.GHZaGcF0-OZVJiIB7y@fat_crate.local> <20240115090639.GAZaT1nx4C4xJuF8IA@fat_crate.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240115090639.GAZaT1nx4C4xJuF8IA@fat_crate.local> X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 0F63C180013 X-Stat-Signature: 68hs4srzah8akkqqcgmt3eb8otwyypun X-Rspam-User: X-HE-Tag: 1705310229-829836 X-HE-Meta: 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 NjYlH+1I u57Cip1Q4NxifkszqSLOyw3BRQJE5xI2Jx4213ECXF8YpQaYXTrSrpQ8MQReNmOdHsMRasyDr4QGaJlWFgbfch4b+BGNi9wS07FfznynAG3/28kaoCLpK3c7wUEW2H50ybfQ5uQUkEmvYBDOXLz2ppq8x6KxNiMvFA9wjYUlNyrg3uZoVwJITJhW6ZaUmoLSsr7UwhB5XweMMt8+tg3TlswfrOIyOemXpQenZVDMggtWj4eisHQjds/m+9itmkRQgKdWIJdtsXlXKLwmV4TCO8lggi0iASMTt0mH5dFCFC6LfWYLbpSW7wDd5EO/w7lvezj7gYqpg6RjIU4hzAqaLn5MACGBU09vddXan0JG41veruL0XBE+KO8lBIJOIsc7PBUxa5bLAy8Kh848= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Jan 15, 2024 at 10:06:39AM +0100, Borislav Petkov wrote: > On Fri, Jan 12, 2024 at 09:27:45PM +0100, Vlastimil Babka wrote: > > Yeah and last LSF/MM we concluded that it's not as a big disadvantage as we > > previously thought https://lwn.net/Articles/931406/ > > How nice, thanks for that! > > Do you have some refs to Mike's tests so that we could run them here too > with SNP guests to see how big - if any - the fragmentation has. I ran several tests from mmtests suite. The tests results are here: https://rppt.io/gfp-unmapped-bench/ > Thx. > > -- > Regards/Gruss, > Boris. > > https://people.kernel.org/tglx/notes-about-netiquette > -- Sincerely yours, Mike.