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t=1715248928; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KNxNDL8CliX5ScNdOouEVQHYdAYZp10dvdvoP0daPnA=; b=BJLLF2tHIR9ux5RHDbXoVxPGdfKBT9VErnyoHGNXwFuOttgPANSzh7bCOXm8+QpgRObb0/ hsyZrh8Mu80ggSCw== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id DC2DD13941; Thu, 9 May 2024 10:02:07 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id QOsjMx+fPGZbOAAAD6G6ig (envelope-from ); Thu, 09 May 2024 10:02:07 +0000 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Muchun Song , Peter Xu , Axel Rasmussen , Liu Shixin , Oscar Salvador Subject: [PATCH 1/2] mm/hugetlb: Add missing VM_FAULT_SET_HINDEX in hugetlb_fault Date: Thu, 9 May 2024 12:01:47 +0200 Message-ID: <20240509100148.22384-2-osalvador@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240509100148.22384-1-osalvador@suse.de> References: <20240509100148.22384-1-osalvador@suse.de> MIME-Version: 1.0 X-Rspamd-Action: no action X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 27352120021 X-Stat-Signature: m5c3yijq97k65uzd1r83m9aw8ck7p7j5 X-HE-Tag: 1715248929-86694 X-HE-Meta: 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 zfNsLurw qGI9xnItueUI8OkCLzeRNrs+Dg/kB2EUYg4rj5vbFfikxCcB9mBtyJQtJ1Gqo8srWRBhBw/XkZ2XpsiJp+GsDzvzjUirDOc8jUfqYnsttRz5d1If3EWZWM3GRgJCh3cw6tWLYDXDlXOU69zrxocCJaTGFEA7+FefIOm73jfIYjwTljvsZpFqDYeq6bSKZInx30p4Q5KBA9hoslJHkQR8LJHzTh4BGH1UJlu+oUPXfD7jWryKhpkt+2u7eTb86X79zwGwn5QZ0AT7zZ+/XRwT09Eokuw== 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: commit af19487f00f3 ("mm: make PTE_MARKER_SWAPIN_ERROR more general") added the code to handle pte_markers in hugetlb faulting path. In case of an UFFD_POISON event, a PTE_MARKER_POISONED will be created and we will return VM_FAULT_HWPOISON_LARGE upon detecting that in the fault path. Add the missing VM_FAULT_SET_HINDEX, so the right si_addr_lsb will be passed to userspace to report the extension of the faulty area. Signed-off-by: Oscar Salvador --- mm/hugetlb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 33d175add044..262456daf327 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6485,7 +6485,8 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, pte_marker_get(pte_to_swp_entry(vmf.orig_pte)); if (marker & PTE_MARKER_POISONED) { - ret = VM_FAULT_HWPOISON_LARGE; + ret = VM_FAULT_HWPOISON_LARGE | + VM_FAULT_SET_HINDEX(hstate_index(h)); goto out_mutex; } } From patchwork Thu May 9 10:01:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oscar Salvador X-Patchwork-Id: 13659614 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4FADC10F1A for ; Thu, 9 May 2024 10:02:15 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id EF3426B0093; 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Thu, 9 May 2024 10:02:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id WHeLCSKfPGZbOAAAD6G6ig (envelope-from ); Thu, 09 May 2024 10:02:10 +0000 From: Oscar Salvador To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Muchun Song , Peter Xu , Axel Rasmussen , Liu Shixin , Oscar Salvador Subject: [PATCH 2/2] mm/hugetlb: Add missing VM_FAULT_SET_HINDEX in hugetlb_wp Date: Thu, 9 May 2024 12:01:48 +0200 Message-ID: <20240509100148.22384-3-osalvador@suse.de> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240509100148.22384-1-osalvador@suse.de> References: <20240509100148.22384-1-osalvador@suse.de> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 400CD2001B X-Stat-Signature: oy1u1tc9gjshuqfc5c4h11ny7d8bzj5i X-HE-Tag: 1715248932-471099 X-HE-Meta: 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 dyNKxb71 QvPLRI0NyZaHTUhFqBEnHAloKONoecqOJPlzldtX3OpszrSmb6KT/4v5kAFpvT/Lvk3amDLIUGC5Q/8P4kCI8untUO8O6KG8xyszGtAXOnHVKyKSIK6flVRgAs95jNJ/klfMluX6gVy4KftHa5b/l505eUdpL5SKlraIvWzfvyhRNIlb25TK+jfGxgUamks2RTOUy0am/xejcbJJP2O5sy5BNPd6pHRdwP0veqC9kCO3Gf/AM+Ak//yI5gTgriDWJx/0TyKQF8vxQJQMtE6s6+xle5w== 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: commit 1cb9dc4b475c ("mm: hwpoison: support recovery from HugePage copy-on-write faults") added support to use the mc variants when coping hugetlb pages on CoW faults. Add the missing VM_FAULT_SET_HINDEX, so the right si_addr_lsb will be passed to userspace to report the extension of the faulty area. Signed-off-by: Oscar Salvador --- mm/hugetlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 262456daf327..6be78e7d4f6e 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -6067,7 +6067,7 @@ static vm_fault_t hugetlb_wp(struct folio *pagecache_folio, goto out_release_all; if (copy_user_large_folio(new_folio, old_folio, vmf->real_address, vma)) { - ret = VM_FAULT_HWPOISON_LARGE; + ret = VM_FAULT_HWPOISON_LARGE | VM_FAULT_SET_HINDEX(hstate_index(h)); goto out_release_all; } __folio_mark_uptodate(new_folio);