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Thu, 23 Oct 2025 04:53:32 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Mohamed Mediouni , Phil Dennis-Jordan , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Cameron Esfahani , Richard Henderson , qemu-arm@nongnu.org, Peter Maydell , Peter Collingbourne , Mads Ynddal , Roman Bolshakov , Alexander Graf , Stefan Hajnoczi , Paolo Bonzini Subject: [PATCH v2 34/58] accel/hvf: Create hvf_protect_clean_range, hvf_unprotect_dirty_range Date: Thu, 23 Oct 2025 13:52:45 +0200 Message-ID: <20251023115311.6944-5-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251023114638.5667-1-philmd@linaro.org> References: <20251023114638.5667-1-philmd@linaro.org> 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=2a00:1450:4864:20::336; envelope-from=philmd@linaro.org; helo=mail-wm1-x336.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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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 @linaro.org) X-ZM-MESSAGEID: 1761220429948154100 From: Richard Henderson Signed-off-by: Richard Henderson Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Tested-by: Philippe Mathieu-Daud=C3=A9 --- include/system/hvf_int.h | 3 +++ accel/hvf/hvf-all.c | 25 +++++++++++++++++++++++++ accel/hvf/trace-events | 1 + 3 files changed, 29 insertions(+) diff --git a/include/system/hvf_int.h b/include/system/hvf_int.h index 3d2be4092ef..5a57691885f 100644 --- a/include/system/hvf_int.h +++ b/include/system/hvf_int.h @@ -89,6 +89,9 @@ int hvf_arch_get_registers(CPUState *); /* Must be called by the owning thread */ void hvf_arch_update_guest_debug(CPUState *cpu); =20 +void hvf_protect_clean_range(hwaddr addr, size_t size); +void hvf_unprotect_dirty_range(hwaddr addr, size_t size); + struct hvf_sw_breakpoint { vaddr pc; vaddr saved_insn; diff --git a/accel/hvf/hvf-all.c b/accel/hvf/hvf-all.c index 0a4b498e836..e13abddbd9c 100644 --- a/accel/hvf/hvf-all.c +++ b/accel/hvf/hvf-all.c @@ -58,6 +58,31 @@ void assert_hvf_ok_impl(hv_return_t ret, const char *fil= e, unsigned int line, abort(); } =20 +static void do_hv_vm_protect(hwaddr start, size_t size, + hv_memory_flags_t flags) +{ + hv_return_t ret; + + trace_hvf_vm_protect(start, size, flags, + flags & HV_MEMORY_READ ? 'R' : '-', + flags & HV_MEMORY_WRITE ? 'W' : '-', + flags & HV_MEMORY_EXEC ? 'X' : '-'); + + ret =3D hv_vm_protect(start, size, flags); + assert_hvf_ok(ret); +} + +void hvf_protect_clean_range(hwaddr addr, size_t size) +{ + do_hv_vm_protect(addr, size, HV_MEMORY_READ | HV_MEMORY_EXEC); +} + +void hvf_unprotect_dirty_range(hwaddr addr, size_t size) +{ + do_hv_vm_protect(addr, size, + HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC); +} + static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags) { struct mac_slot *macslot; diff --git a/accel/hvf/trace-events b/accel/hvf/trace-events index 2fd3e127c74..f989da59492 100644 --- a/accel/hvf/trace-events +++ b/accel/hvf/trace-events @@ -5,3 +5,4 @@ # hvf-accel-ops.c hvf_vm_map(uint64_t paddr, uint64_t size, void *vaddr, uint8_t flags, cons= t char r, const char w, const char e) "paddr:0x%016"PRIx64" size:0x%08"PRIx= 64" vaddr:%p flags:0x%02x/%c%c%c" hvf_vm_unmap(uint64_t paddr, uint64_t size) "paddr:0x%016"PRIx64" size:0x%= 08"PRIx64 +hvf_vm_protect(uint64_t paddr, size_t size, uint8_t flags, const char r, c= onst char w, const char e) "paddr:0x%016"PRIx64" size:0x%08zx flags:0x%02x/= %c%c%c" --=20 2.51.0