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Tue, 06 Aug 2024 06:13:53 -0700 (PDT) From: Nicholas Piggin To: qemu-ppc@nongnu.org Cc: Nicholas Piggin , qemu-devel@nongnu.org Subject: [PATCH 7/7] target/ppc: Fix VRMA to not check virtual page class key protection Date: Tue, 6 Aug 2024 23:13:17 +1000 Message-ID: <20240806131318.275109-8-npiggin@gmail.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240806131318.275109-1-npiggin@gmail.com> References: <20240806131318.275109-1-npiggin@gmail.com> MIME-Version: 1.0 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=2607:f8b0:4864:20::636; envelope-from=npiggin@gmail.com; helo=mail-pl1-x636.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1722950113924116600 Content-Type: text/plain; charset="utf-8" Hash virtual real mode addressing is defined by the architecture to not perform virtual page class key protection checks. Signed-off-by: Nicholas Piggin --- target/ppc/mmu-hash64.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c index 5e1983e334..c8c2f8910a 100644 --- a/target/ppc/mmu-hash64.c +++ b/target/ppc/mmu-hash64.c @@ -993,6 +993,7 @@ bool ppc_hash64_xlate(PowerPCCPU *cpu, vaddr eaddr, MMU= AccessType access_type, int exec_prot, pp_prot, amr_prot, prot; int need_prot; hwaddr raddr; + bool vrma =3D false; =20 /* * Note on LPCR usage: 970 uses HID4, but our special variant of @@ -1022,6 +1023,7 @@ bool ppc_hash64_xlate(PowerPCCPU *cpu, vaddr eaddr, M= MUAccessType access_type, } } else if (ppc_hash64_use_vrma(env)) { /* Emulated VRMA mode */ + vrma =3D true; slb =3D &vrma_slbe; if (build_vrma_slbe(cpu, slb) !=3D 0) { /* Invalid VRMA setup, machine check */ @@ -1136,7 +1138,12 @@ bool ppc_hash64_xlate(PowerPCCPU *cpu, vaddr eaddr, = MMUAccessType access_type, =20 exec_prot =3D ppc_hash64_pte_noexec_guard(cpu, pte); pp_prot =3D ppc_hash64_pte_prot(mmu_idx, slb, pte); - amr_prot =3D ppc_hash64_amr_prot(cpu, pte); + if (vrma) { + /* VRMA does not check keys */ + amr_prot =3D PAGE_READ | PAGE_WRITE | PAGE_EXEC; + } else { + amr_prot =3D ppc_hash64_amr_prot(cpu, pte); + } prot =3D exec_prot & pp_prot & amr_prot; =20 need_prot =3D check_prot_access_type(PAGE_RWX, access_type); --=20 2.45.2