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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::329; envelope-from=philmd@linaro.org; helo=mail-wm1-x329.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=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 @linaro.org) X-ZM-MESSAGEID: 1672232124642000001 When called from syscall(), we are not within a TB and pc =3D=3D 0. We can skip the check for invalidating the current TB. Signed-off-by: Richard Henderson [PMD: Split patch in 2] Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- accel/tcg/tb-maint.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/accel/tcg/tb-maint.c b/accel/tcg/tb-maint.c index 1b8e860647..c9b8d3c6c3 100644 --- a/accel/tcg/tb-maint.c +++ b/accel/tcg/tb-maint.c @@ -1024,8 +1024,18 @@ void tb_invalidate_phys_page(tb_page_addr_t addr) */ bool tb_invalidate_phys_page_unwind(tb_page_addr_t addr, uintptr_t pc) { - assert(pc !=3D 0); -#ifdef TARGET_HAS_PRECISE_SMC + /* + * Without precise smc semantics, or when outside of a TB, + * we can skip to invalidate. + */ +#ifndef TARGET_HAS_PRECISE_SMC + pc =3D 0; +#endif + if (!pc) { + tb_invalidate_phys_page(addr); + return false; + } + assert_memory_lock(); { TranslationBlock *current_tb =3D tcg_tb_lookup(pc); @@ -1058,9 +1068,6 @@ bool tb_invalidate_phys_page_unwind(tb_page_addr_t ad= dr, uintptr_t pc) return true; } } -#else - tb_invalidate_phys_page(addr); -#endif /* TARGET_HAS_PRECISE_SMC */ return false; } #else --=20 2.38.1