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[88.21.202.17]) by smtp.gmail.com with ESMTPSA id 7sm17647462wra.50.2020.05.18.08.53.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2020 08:53:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=WSFyr6f19aP4N4MMJJARifgNu7cVe5tnytMgFa4vhLY=; b=kCSqrZiBJYfTvK6U7vz3nNDXw8i72uTGkX8UjayRNSx1b87A6HZyN0RCp9RgEzIN0G qWNlCkhAfu32BYTwCLRdc01DpTLebfKGRZENxPGloToarBft+JLovARNHt3Zm5JpiOFb VAmXclSfNHTPsASzzd+5Vo/Ib/iqvhUsdfDPO8VIutjrO5t7FrU6hlXCXcT5h2jVueTR s/m9n5HsKERdFsQ7+K4XiY/S9K6T8aned4oF9+6DsGouHBcACygZhGM0HhzemufQ8c0m 1SMjBI0ljkR3A+dajrtCahHCwr35VD8FFfX24g9to1COczOsGSx8MST9/AnK7B7azqah +gGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=WSFyr6f19aP4N4MMJJARifgNu7cVe5tnytMgFa4vhLY=; b=IyqvI/YZLqxQPn8Qh5cqL6AKWJ1tEd6ydygB8L0Ho6QmyGNh1EmTIhYLJ9ZdUDh1Uw Q7Sh9OsLZtEUnb9xOdqvcT3qyRwCd5OGWe+PYhB7KGRBNK3wSDoO+M0U0NE1KBiErS9e UFji4QXFnXXCoCB5v69ca3ws0neZQ3YZhIZ32Mc6gicsVLFg6Ar48AifxGRE3mlH4FNS POWZSreS94CsHT1nWbqUr3qR2YItc98a4NYfZVAJFQQ52b8DN9q7nJeBtCZthTFZMaFz U6Qv4BdhK7ZRzgHWJFeoLq+Pe395q5cDZuFyK42iM3uvGh8qbEWksY+YVSA0o+V1f/tp sYZg== X-Gm-Message-State: AOAM532ONNXtLkJ53AomqufL97VllhP27sH7lrypSD/xfmqMGAbOTG4O ObCJBfxPRERQSaNPCum1ydXr8ZhoNko= X-Google-Smtp-Source: ABdhPJwFmlOQ4JYI++JR9ixqC4zYUF4jca3lwFeihkNHUxT11OuH2+k/On4eJQV74FyKNuuQu/d9Dg== X-Received: by 2002:a7b:cf15:: with SMTP id l21mr32568wmg.172.1589817191110; Mon, 18 May 2020 08:53:11 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH v2 1/7] exec: Let address_space_read/write_cached() propagate MemTxResult Date: Mon, 18 May 2020 17:53:02 +0200 Message-Id: <20200518155308.15851-2-f4bug@amsat.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200518155308.15851-1-f4bug@amsat.org> References: <20200518155308.15851-1-f4bug@amsat.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::342; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x342.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , kvm@vger.kernel.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , qemu-arm@nongnu.org, Paolo Bonzini , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Both address_space_read_cached_slow() and address_space_write_cached_slow() return a MemTxResult type. Do not discard it, return it to the caller. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Peter Maydell --- include/exec/memory.h | 19 +++++++++++-------- exec.c | 16 ++++++++-------- 2 files changed, 19 insertions(+), 16 deletions(-) diff --git a/include/exec/memory.h b/include/exec/memory.h index e000bd2f97..5e8c009169 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -2343,10 +2343,11 @@ void *qemu_map_ram_ptr(RAMBlock *ram_block, ram_add= r_t addr); =20 /* Internal functions, part of the implementation of address_space_read_ca= ched * and address_space_write_cached. */ -void address_space_read_cached_slow(MemoryRegionCache *cache, - hwaddr addr, void *buf, hwaddr len); -void address_space_write_cached_slow(MemoryRegionCache *cache, - hwaddr addr, const void *buf, hwaddr = len); +MemTxResult address_space_read_cached_slow(MemoryRegionCache *cache, + hwaddr addr, void *buf, hwaddr = len); +MemTxResult address_space_write_cached_slow(MemoryRegionCache *cache, + hwaddr addr, const void *buf, + hwaddr len); =20 static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) { @@ -2411,15 +2412,16 @@ MemTxResult address_space_read(AddressSpace *as, hw= addr addr, * @buf: buffer with the data transferred * @len: length of the data transferred */ -static inline void +static inline MemTxResult address_space_read_cached(MemoryRegionCache *cache, hwaddr addr, void *buf, hwaddr len) { assert(addr < cache->len && len <=3D cache->len - addr); if (likely(cache->ptr)) { memcpy(buf, cache->ptr + addr, len); + return MEMTX_OK; } else { - address_space_read_cached_slow(cache, addr, buf, len); + return address_space_read_cached_slow(cache, addr, buf, len); } } =20 @@ -2431,15 +2433,16 @@ address_space_read_cached(MemoryRegionCache *cache,= hwaddr addr, * @buf: buffer with the data transferred * @len: length of the data transferred */ -static inline void +static inline MemTxResult address_space_write_cached(MemoryRegionCache *cache, hwaddr addr, const void *buf, hwaddr len) { assert(addr < cache->len && len <=3D cache->len - addr); if (likely(cache->ptr)) { memcpy(cache->ptr + addr, buf, len); + return MEMTX_OK; } else { - address_space_write_cached_slow(cache, addr, buf, len); + return address_space_write_cached_slow(cache, addr, buf, len); } } =20 diff --git a/exec.c b/exec.c index 5162f0d12f..877b51cc5c 100644 --- a/exec.c +++ b/exec.c @@ -3716,7 +3716,7 @@ static inline MemoryRegion *address_space_translate_c= ached( /* Called from RCU critical section. address_space_read_cached uses this * out of line function when the target is an MMIO or IOMMU region. */ -void +MemTxResult address_space_read_cached_slow(MemoryRegionCache *cache, hwaddr addr, void *buf, hwaddr len) { @@ -3726,15 +3726,15 @@ address_space_read_cached_slow(MemoryRegionCache *c= ache, hwaddr addr, l =3D len; mr =3D address_space_translate_cached(cache, addr, &addr1, &l, false, MEMTXATTRS_UNSPECIFIED); - flatview_read_continue(cache->fv, - addr, MEMTXATTRS_UNSPECIFIED, buf, len, - addr1, l, mr); + return flatview_read_continue(cache->fv, + addr, MEMTXATTRS_UNSPECIFIED, buf, len, + addr1, l, mr); } =20 /* Called from RCU critical section. address_space_write_cached uses this * out of line function when the target is an MMIO or IOMMU region. */ -void +MemTxResult address_space_write_cached_slow(MemoryRegionCache *cache, hwaddr addr, const void *buf, hwaddr len) { @@ -3744,9 +3744,9 @@ address_space_write_cached_slow(MemoryRegionCache *ca= che, hwaddr addr, l =3D len; mr =3D address_space_translate_cached(cache, addr, &addr1, &l, true, MEMTXATTRS_UNSPECIFIED); - flatview_write_continue(cache->fv, - addr, MEMTXATTRS_UNSPECIFIED, buf, len, - addr1, l, mr); + return flatview_write_continue(cache->fv, + addr, MEMTXATTRS_UNSPECIFIED, buf, len, + addr1, l, mr); } =20 #define ARG1_DECL MemoryRegionCache *cache --=20 2.21.3