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Tue, 05 Sep 2023 05:21:59 -0700 (PDT) Received: from localhost.localdomain ([37.69.27.38]) by smtp.gmail.com with ESMTPSA id n9-20020a05600c294900b003feff926fc5sm16775933wmd.17.2023.09.05.05.21.58 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 05 Sep 2023 05:21:59 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Paul Durrant , Paolo Bonzini , Stefano Stabellini , xen-devel@lists.xenproject.org, Anthony Perard , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Daniel Henrique Barboza , Peter Xu , David Hildenbrand Subject: [PATCH 3/3] sysemu/xen: Allow elision of xen_hvm_modified_memory() Date: Tue, 5 Sep 2023 14:21:42 +0200 Message-ID: <20230905122142.5939-4-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230905122142.5939-1-philmd@linaro.org> References: <20230905122142.5939-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=philmd@linaro.org; helo=mail-wr1-x42e.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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Call xen_enabled() before xen_hvm_modified_memory() to let the compiler elide its call. Have xen_enabled() return a boolean to match its declaration in the CONFIG_XEN_IS_POSSIBLE case. Suggested-by: Daniel Henrique Barboza Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: David Hildenbrand --- include/exec/ram_addr.h | 8 ++++++-- include/sysemu/xen.h | 15 ++------------- 2 files changed, 8 insertions(+), 15 deletions(-) diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h index 9f2e3893f5..66e849ac4e 100644 --- a/include/exec/ram_addr.h +++ b/include/exec/ram_addr.h @@ -330,7 +330,9 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start, } } - xen_hvm_modified_memory(start, length); + if (xen_enabled()) { + xen_hvm_modified_memory(start, length); + } } #if !defined(_WIN32) @@ -406,7 +408,9 @@ uint64_t cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap, } } - xen_hvm_modified_memory(start, pages << TARGET_PAGE_BITS); + if (xen_enabled()) { + xen_hvm_modified_memory(start, pages << TARGET_PAGE_BITS); + } } else { uint8_t clients = tcg_enabled() ? DIRTY_CLIENTS_ALL : DIRTY_CLIENTS_NOCODE; diff --git a/include/sysemu/xen.h b/include/sysemu/xen.h index 1f797a9abe..d84a5f3551 100644 --- a/include/sysemu/xen.h +++ b/include/sysemu/xen.h @@ -21,24 +21,13 @@ #endif #ifdef CONFIG_XEN_IS_POSSIBLE - extern bool xen_allowed; - #define xen_enabled() (xen_allowed) - -void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length); - #else /* !CONFIG_XEN_IS_POSSIBLE */ - -#define xen_enabled() 0 - -static inline void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length) -{ - /* nothing */ -} - +#define xen_enabled() false #endif /* CONFIG_XEN_IS_POSSIBLE */ +void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length); void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, struct MemoryRegion *mr, Error **errp);