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Mon, 8 Nov 2021 18:14:21 +0000 (UTC) Received: from zn.tnic (p200300ec2f3311008f2ddbd2a2570897.dip0.t-ipconnect.de [IPv6:2003:ec:2f33:1100:8f2d:dbd2:a257:897]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 3AAEC1EC03F0; Mon, 8 Nov 2021 19:14:18 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1636395258; h=from:from: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; bh=+HGdXgtqs75JzplHr1fw8l9R7E0Ax8B0+CMXZj7tYjw=; b=JOTcUpAORtYs0vDLl0qwwB7gRevj19RPVQHhG0QnjV5H/+dFLUvZBr9eW8eD4MBeAbTe8q N1UJwyZcsZojb6gTtwokrIVzEF5ZNpa4bsRYBo2kogWFnFZ3eJK+CGqccZzTKdVImeb73m cRq530yqjggDJ4iaaeEGU22Nz6iYaRk= Date: Mon, 8 Nov 2021 19:14:12 +0100 From: Borislav Petkov To: Joerg Roedel Subject: Re: [PATCH v2 06/12] x86/sev: Cache AP Jump Table Address Message-ID: References: <20210913155603.28383-1-joro@8bytes.org> <20210913155603.28383-7-joro@8bytes.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210913155603.28383-7-joro@8bytes.org> Cc: kvm@vger.kernel.org, Peter Zijlstra , Dave Hansen , virtualization@lists.linux-foundation.org, Arvind Sankar , hpa@zytor.com, Jiri Slaby , x86@kernel.org, David Rientjes , Masami Hiramatsu , Martin Radev , Tom Lendacky , Joerg Roedel , Kees Cook , Cfir Cohen , linux-coco@lists.linux.dev, Andy Lutomirski , Dan Williams , Juergen Gross , Mike Stunes , Sean Christopherson , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Eric Biederman , Erdem Aktas X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On Mon, Sep 13, 2021 at 05:55:57PM +0200, Joerg Roedel wrote: > From: Joerg Roedel > > Store the physical address of the AP Jump Table in kernel memory so > that it does not need to be fetched from the Hypervisor again. > > Signed-off-by: Joerg Roedel > --- > arch/x86/kernel/sev.c | 26 ++++++++++++++------------ > 1 file changed, 14 insertions(+), 12 deletions(-) > > diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c > index 5d3422e8b25e..eedba56b6bac 100644 > --- a/arch/x86/kernel/sev.c > +++ b/arch/x86/kernel/sev.c > @@ -42,6 +42,9 @@ static struct ghcb boot_ghcb_page __bss_decrypted __aligned(PAGE_SIZE); > */ > static struct ghcb __initdata *boot_ghcb; > > +/* Cached AP Jump Table Address */ > +static phys_addr_t sev_es_jump_table_pa; This is static, so "jump_table_pa" should be enough. Also, to the prefixes, everything which is not SEV-ES only, should be simply prefixed with "sev_" if externally visible. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization