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[174.91.117.74]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-90c4584418bsm36560896d6.17.2026.08.18.10.20.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2026 10:20:22 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: Richard Henderson , Paolo Bonzini , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v2 1/9] system: Define ram_addr_t to be always uint64_t Date: Tue, 18 Aug 2026 13:20:04 -0400 Message-ID: <20260818172012.3052821-2-peterx@redhat.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260818172012.3052821-1-peterx@redhat.com> References: <20260818172012.3052821-1-peterx@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=peterx@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.343, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, SPF_HELO_PASS=-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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org QEMU's 32bit host support was deprecated since 10.0 and removed in 11.0 (commit 372ec46b9f), at least system emulation part (cf634dfcd8fc revived tools). Now it's safe to move ram_addr_t completely over to uint64_t. It should be almost the same as uintptr_t as before for !Xen, except that on some systems (like MacOS) uintptr_t and uint64_t can be typed slightly differently, causing unnecessary compiler warnings when use them in a mixture way. Hopefully, this change also makes it clear that ram_addr_t is never used as a host pointer in any form, but only an internal QEMU integer based address space for allocating ramblocks. [1] https://lore.kernel.org/r/d7b2fbf6-f9fa-4b39-8f40-95b7d5d0d8fb@oss.qualcomm.com Cc: Paolo Bonzini Cc: Philippe Mathieu-Daudé Suggested-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Peter Maydell Reviewed-by: Richard Henderson Signed-off-by: Peter Xu --- include/system/ram_addr.h | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/include/system/ram_addr.h b/include/system/ram_addr.h index 129f6b8757..044c0b52cc 100644 --- a/include/system/ram_addr.h +++ b/include/system/ram_addr.h @@ -14,16 +14,14 @@ #ifndef RAM_ADDR_H #define RAM_ADDR_H -/* address in the RAM (different from a physical address) */ -#if defined(CONFIG_XEN_BACKEND) +/* + * QEMU's internal RAM address space for ramblock allocations (different + * from guest physical address). + */ typedef uint64_t ram_addr_t; -# define RAM_ADDR_MAX UINT64_MAX -# define RAM_ADDR_FMT "%" PRIx64 -#else -typedef uintptr_t ram_addr_t; -# define RAM_ADDR_MAX UINTPTR_MAX -# define RAM_ADDR_FMT "%" PRIxPTR -#endif + +#define RAM_ADDR_MAX UINT64_MAX +#define RAM_ADDR_FMT "%" PRIx64 #define DIRTY_MEMORY_VGA 0 #define DIRTY_MEMORY_CODE 1 -- 2.54.0