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bh=lCMJCAAvFCHtyAGeQeoNWmtcrKXM3POMlMJ7sF7LukU=; b=bg/AppeMhsEBONgkLGhbzvvhft1cp1FwKGeswDkamqq4qsnlRU32A6ywCZffebBjMReeiO 4K/wqM5CnJ0xHvkiuNHk7NDyvpsdt/4aIAt1Xh37Iec7qKu/9cz3zOKNUoDkFR3zqVT/Rw C5nH7igTNykkrchngxaWSIOGv6wfxRI= X-MC-Unique: 3s4z8zQmPIm7drW354rspA-1 From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v2 1/5] tpm: mark correct memory region range dirty when clearing RAM Date: Mon, 1 Mar 2021 17:11:33 +0100 Message-Id: <20210301161137.78941-2-david@redhat.com> In-Reply-To: <20210301161137.78941-1-david@redhat.com> References: <20210301161137.78941-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Stefan Berger , "Michael S. Tsirkin" , David Hildenbrand , "Dr . David Alan Gilbert" , Peter Xu , Alex Williamson , Claudio Fontana , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Igor Mammedov , Stefan Berger Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) We might not start at the beginning of the memory region. We could also calculate via the difference in the host address; however, memory_region_set_dirty() also relies on memory_region_get_ram_addr() internally, so let's just use that. Acked-by: Stefan Berger Fixes: ffab1be70692 ("tpm: clear RAM when "memory overwrite" requested") Cc: Marc-Andr=C3=A9 Lureau Cc: Paolo Bonzini Cc: "Michael S. Tsirkin" Cc: Alex Williamson Cc: Dr. David Alan Gilbert Cc: Igor Mammedov Cc: Claudio Fontana Cc: Thomas Huth Cc: "Alex Benn=C3=A9e" Cc: Peter Xu Cc: Laurent Vivier Cc: Stefan Berger Signed-off-by: David Hildenbrand --- hw/tpm/tpm_ppi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/tpm/tpm_ppi.c b/hw/tpm/tpm_ppi.c index 72d7a3d926..e0e2d2c8e1 100644 --- a/hw/tpm/tpm_ppi.c +++ b/hw/tpm/tpm_ppi.c @@ -30,11 +30,13 @@ void tpm_ppi_reset(TPMPPI *tpmppi) guest_phys_blocks_init(&guest_phys_blocks); guest_phys_blocks_append(&guest_phys_blocks); QTAILQ_FOREACH(block, &guest_phys_blocks.head, next) { + ram_addr_t mr_start =3D memory_region_get_ram_addr(block->mr); + trace_tpm_ppi_memset(block->host_addr, block->target_end - block->target_start); memset(block->host_addr, 0, block->target_end - block->target_start); - memory_region_set_dirty(block->mr, 0, + memory_region_set_dirty(block->mr, block->target_start - mr_st= art, block->target_end - block->target_star= t); } guest_phys_blocks_free(&guest_phys_blocks); --=20 2.29.2