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Donenfeld" To: peter.maydell@linaro.org, pbonzini@redhat.com, qemu-devel@nongnu.org Cc: "Jason A. Donenfeld" , Aleksandar Rikalo , Paul Burton , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 6/8] mips: re-randomize rng-seed on reboot Date: Tue, 11 Oct 2022 14:46:43 -0600 Message-Id: <20221011204645.1160916-7-Jason@zx2c4.com> In-Reply-To: <20221011204645.1160916-1-Jason@zx2c4.com> References: <20221011204645.1160916-1-Jason@zx2c4.com> MIME-Version: 1.0 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=2604:1380:4601:e00::1; envelope-from=SRS0=aME8=2M=zx2c4.com=Jason@kernel.org; helo=ams.source.kernel.org X-Spam_score_int: -67 X-Spam_score: -6.8 X-Spam_bar: ------ X-Spam_report: (-6.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_HI=-5, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @zx2c4.com) X-ZM-MESSAGEID: 1665521904943100001 When the system reboots, the rng-seed that the FDT has should be re-randomized, so that the new boot gets a new seed. Since the FDT is in the ROM region at this point, we add a hook right after the ROM has been added, so that we have a pointer to that copy of the FDT. Cc: Aleksandar Rikalo Cc: Paul Burton Cc: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Jason A. Donenfeld --- hw/mips/boston.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/mips/boston.c b/hw/mips/boston.c index d2ab9da1a0..a560ce0324 100644 --- a/hw/mips/boston.c +++ b/hw/mips/boston.c @@ -41,6 +41,7 @@ #include "sysemu/sysemu.h" #include "sysemu/qtest.h" #include "sysemu/runstate.h" +#include "sysemu/reset.h" =20 #include #include "qom/object.h" @@ -810,6 +811,8 @@ static void boston_mach_init(MachineState *machine) /* Calculate real fdt size after filter */ dt_size =3D fdt_totalsize(dtb_load_data); rom_add_blob_fixed("dtb", dtb_load_data, dt_size, dtb_paddr); + qemu_register_reset(qemu_fdt_randomize_seeds, + rom_ptr(dtb_paddr, dt_size)); } else { /* Try to load file as FIT */ fit_err =3D load_fit(&boston_fit_loader, machine->kernel_filen= ame, s); --=20 2.37.3