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From: Sean Christopherson <seanjc@google.com>
To: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
	iommu@lists.linux-foundation.org, kvm@vger.kernel.org,
	linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org,
	linux-graphics-maintainer@vmware.com,
	amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	Borislav Petkov <bp@alien8.de>,
	Brijesh Singh <brijesh.singh@amd.com>,
	Joerg Roedel <joro@8bytes.org>, Andi Kleen <ak@linux.intel.com>,
	Sathyanarayanan Kuppuswamy 
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	Tianyu Lan <Tianyu.Lan@microsoft.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Andy Lutomirski <luto@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Will Deacon <will@kernel.org>, Dave Young <dyoung@redhat.com>,
	Baoquan He <bhe@redhat.com>
Subject: Re: [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() with prot_guest_has()
Date: Fri, 30 Jul 2021 22:34:37 +0000	[thread overview]
Message-ID: <YQR+ffO92gMfGDbs@google.com> (raw)
In-Reply-To: <029791b24c6412f9427cfe6ec598156c64395964.1627424774.git.thomas.lendacky@amd.com>

On Tue, Jul 27, 2021, Tom Lendacky wrote:
> @@ -451,7 +450,7 @@ void __init mem_encrypt_free_decrypted_mem(void)
>  	 * The unused memory range was mapped decrypted, change the encryption
>  	 * attribute from decrypted to encrypted before freeing it.
>  	 */
> -	if (mem_encrypt_active()) {
> +	if (sme_me_mask) {

Any reason this uses sme_me_mask?  The helper it calls, __set_memory_enc_dec(),
uses prot_guest_has(PATTR_MEM_ENCRYPT) so I assume it's available?

>  		r = set_memory_encrypted(vaddr, npages);
>  		if (r) {
>  			pr_warn("failed to free unused decrypted pages\n");


  reply	other threads:[~2021-07-30 22:34 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-27 22:26 [PATCH 00/11] Implement generic prot_guest_has() helper function Tom Lendacky
2021-07-27 22:26 ` [PATCH 01/11] mm: Introduce a function to check for virtualization protection features Tom Lendacky
2021-07-28 13:17   ` Christoph Hellwig
2021-07-28 16:28     ` Borislav Petkov
2021-08-02 10:34   ` Joerg Roedel
2021-08-11 14:53   ` Kuppuswamy, Sathyanarayanan
2021-08-11 15:39     ` Tom Lendacky
2021-07-27 22:26 ` [PATCH 02/11] x86/sev: Add an x86 version of prot_guest_has() Tom Lendacky
2021-07-28 13:22   ` Christoph Hellwig
2021-07-29 14:24     ` Tom Lendacky
2021-08-02 10:35   ` Joerg Roedel
2021-07-27 22:26 ` [PATCH 03/11] powerpc/pseries/svm: Add a powerpc " Tom Lendacky
2021-07-27 22:26 ` [PATCH 04/11] x86/sme: Replace occurrences of sme_active() with prot_guest_has() Tom Lendacky
2021-08-02 10:37   ` Joerg Roedel
2021-07-27 22:26 ` [PATCH 05/11] x86/sev: Replace occurrences of sev_active() " Tom Lendacky
2021-08-02 10:42   ` Joerg Roedel
2021-07-27 22:26 ` [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() " Tom Lendacky
2021-08-02 10:45   ` Joerg Roedel
2021-08-09 21:59     ` Tom Lendacky
2021-08-09 22:08       ` Kuppuswamy, Sathyanarayanan
2021-07-27 22:26 ` [PATCH 07/11] treewide: Replace the use of mem_encrypt_active() " Tom Lendacky
2021-07-30 22:34   ` Sean Christopherson [this message]
2021-08-09 21:55     ` Tom Lendacky
2021-08-02 12:42   ` Christophe Leroy
2021-08-09 22:04     ` Tom Lendacky
2021-08-10 18:45   ` Kuppuswamy, Sathyanarayanan
2021-08-10 19:48     ` Tom Lendacky
2021-08-10 20:09       ` Kuppuswamy, Sathyanarayanan
2021-08-11 12:19       ` Kirill A. Shutemov
2021-08-11 15:52         ` Tom Lendacky
2021-08-12 10:07           ` Kirill A. Shutemov
2021-08-13 17:08             ` Tom Lendacky
2021-08-13 20:17               ` Tom Lendacky
2021-07-27 22:26 ` [PATCH 08/11] mm: Remove the now unused mem_encrypt_active() function Tom Lendacky
2021-08-02 10:47   ` Joerg Roedel
2021-07-27 22:26 ` [PATCH 09/11] x86/sev: " Tom Lendacky
2021-08-02 10:46   ` Joerg Roedel
2021-07-27 22:26 ` [PATCH 10/11] powerpc/pseries/svm: " Tom Lendacky
2021-07-27 22:26 ` [PATCH 11/11] s390/mm: " Tom Lendacky
2021-07-27 22:37 ` [PATCH 00/11] Implement generic prot_guest_has() helper function Tom Lendacky
2021-07-28 11:50 ` Christian König
2021-08-09  1:41 ` Kuppuswamy, Sathyanarayanan
2021-08-09 22:16   ` Tom Lendacky

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