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[190.16.153.7]) by smtp.gmail.com with ESMTPSA id t26sm516651qtq.77.2021.10.27.12.56.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Oct 2021 12:56:21 -0700 (PDT) From: Martin Fernandez To: linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, ardb@kernel.org, dvhart@infradead.org, andy@infradead.org, gregkh@linuxfoundation.org, rafael@kernel.org, martin.fernandez@eclypsium.com, daniel.gutson@eclypsium.com, hughsient@gmail.com Subject: [PATCH v2 2/5] Extend pg_data_t to hold information about memory encryption Date: Wed, 27 Oct 2021 16:55:08 -0300 Message-Id: <20211027195511.207552-3-martin.fernandez@eclypsium.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211027195511.207552-1-martin.fernandez@eclypsium.com> References: <20211027195511.207552-1-martin.fernandez@eclypsium.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Add a new member in the pg_data_t struct tell whether the node corresponding to that pg_data_t is able to do hardware memory encryption. Signed-off-by: Martin Fernandez --- include/linux/mmzone.h | 2 ++ mm/page_alloc.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 6a1d79d84675..998fbe371a81 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -869,6 +869,8 @@ typedef struct pglist_data { unsigned long min_slab_pages; #endif /* CONFIG_NUMA */ + bool crypto_capable; + /* Write-intensive fields used by page reclaim */ ZONE_PADDING(_pad1_) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b37435c274cf..a19d95bb5c0f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7575,6 +7575,7 @@ static void __init free_area_init_node(int nid) pgdat->node_id = nid; pgdat->node_start_pfn = start_pfn; pgdat->per_cpu_nodestats = NULL; + pgdat->crypto_capable = memblock_node_is_crypto_capable(nid); pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, (u64)start_pfn << PAGE_SHIFT, -- 2.30.2