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charset=utf-8 Content-Disposition: inline In-Reply-To: <711e6027-1b4f-4aed-47a6-305396d05893@amd.com> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1668623985; a=rsa-sha256; cv=none; b=5AmQ5kjLnp6AB7opOZ4VK0UG7/u6cXyx8FUAdPiTvat+9+QzqgsOu+X9pIrFnVegBHt1iC Ye/+6ry7wce+BwqyG07NW4zCszJDK4W01929B++kkmTSQ1xj8Nf5CwFNK5BbnlAF759E3k PUkxfZPQYgMKycWsf6OEz/srUL3Bj7w= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=pass header.d=alien8.de header.s=dkim header.b=ZvkX+n9j; spf=pass (imf11.hostedemail.com: domain of bp@alien8.de designates 5.9.137.197 as permitted sender) smtp.mailfrom=bp@alien8.de; dmarc=pass (policy=none) header.from=alien8.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1668623985; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Ms5H47kTpr48KRWEJSYgNO3SJlSnLGzl1g2kZ6eGJmc=; b=aczytMLEKCHfIaDK68E7x7YBe33wztiWHCGaog2APIaDylb2CivM1XKmGQoaefiV8RZKoq cY65Hpv2lBrS5giOvtxX59PhSva0U1VCpGFd21emeKCKBjjUodik6FCY2ZPSeAotR2iTfY qsIpx9213CqWYs+r4XwyKGpOGyu+0QE= X-Rspam-User: X-Stat-Signature: n8r9996iq8zj11uhwsqdyb7aga7ujbnb X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: F28BD4000E Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=alien8.de header.s=dkim header.b=ZvkX+n9j; spf=pass (imf11.hostedemail.com: domain of bp@alien8.de designates 5.9.137.197 as permitted sender) smtp.mailfrom=bp@alien8.de; dmarc=pass (policy=none) header.from=alien8.de X-HE-Tag: 1668623984-845222 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: On Wed, Nov 16, 2022 at 12:01:11PM -0600, Kalra, Ashish wrote: > Ok, so i will work on implementing this leaked pages list and put it on a > sev/snp associated structure. See __sgx_sanitize_pages() and the poison list there, for an example. > Also to add here, we will actually get a not-present #PF instead of the RMP > violation #PF on writing to these leaked pages, as these pages would have > been removed from the kernel direct map. So if you do the list and still have the kernel raise a RMP fault for those pages, traversing that list in the RMP handler to check whether the page is there on it, should be a lot faster operation than doing the #PF thing and removing them from the direct map. And sorry for misleading you about UPM - we were thinking wrong yesterday. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette