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[173.197.107.21]) by smtp.gmail.com with ESMTPSA id u12sm2010pfh.98.2021.01.05.09.20.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Jan 2021 09:20:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GOc/QdYClClYlMp2dKbUVjQGtFUnV184hz1wUbaQM2s=; b=E8HzXHV0hUWHkYw2rZ10TU4XOaQQx1E0CtiGqek0mN4dRfx5Ncvv++NuFmiAsf5poQ rRPxqCErNAiqesQxr58Fri0+sFX6IdmEK/0hCV6LjCsLbQes31bYn+nB2iEsssWaGDzS 4LAtOTDaoBp7yP+DxdA27cMIBppP19Opeibo1/t/eoft4zquMJ3jJBUmIXK3u0mKgKqo d3g2VwgyGDuDjphWGLqs5CChCSgLeUriSPbLU50H0AdCX8w+26ePU68YnhnT+pSvVmTw WN1TdyYl+iVqcQO7KDBV+HKLout8CXGN0XH0qW8UYvmdv1vsYCOGAoLgvyNy7l9pPMiw PfqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GOc/QdYClClYlMp2dKbUVjQGtFUnV184hz1wUbaQM2s=; b=NsknMu7hrsa0cAsde/fP+f4gdBXHjakFPrkqeNmlpQsJmPiLhnGAT2Aynlp5bIJ3pW y/fkw6GDD956jqgwZX7KYL9nLxIhhPYhfIMdVPuh9FMRxLIwL/REF11zfu0SykUxn2vp rDDAJuPSG+E8OYvLNmQR6h4qbaXNCHMJ+Ic63hIgAW994drn/pz9D4yOExyGGbga9tlx HjnOivHX5ArTd7gg5E9TGY9GAhI0X0hvaRfTPDlk1l8VAmb+hiW0KCs9cDC5bj1QleEj oBWZmGhoPzpCmNf8bgzYROUSHQTj11ZYqpxM6T+llL6oPAtbO7ytPNrPSD6hYr1rvVGE N7wg== X-Gm-Message-State: AOAM532Rjbc4nfLBK1txBgtoG192iKp6Cf06/7M2cFRcobartGYMIVpc rc/2jyOI+KmDQnUxi1y6PTP2OEq0kLf/6g== X-Google-Smtp-Source: ABdhPJzlVLMnoZ0bi+N9XNwXjZhT+AbHAmMOASDFLXHKjxpxovXTqVzb4utlFqLo08446pGG9Hm5Cw== X-Received: by 2002:a17:902:7242:b029:db:d1ae:46bb with SMTP id c2-20020a1709027242b02900dbd1ae46bbmr313961pll.77.1609867224667; Tue, 05 Jan 2021 09:20:24 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v5 16/43] tcg: Use Error with alloc_code_gen_buffer Date: Tue, 5 Jan 2021 07:19:23 -1000 Message-Id: <20210105171950.415486-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210105171950.415486-1-richard.henderson@linaro.org> References: <20210105171950.415486-1-richard.henderson@linaro.org> MIME-Version: 1.0 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=2607:f8b0:4864:20::62a; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62a.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Joelle van Dyne Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Report better error messages than just "could not allocate". Let alloc_code_gen_buffer set ctx->code_gen_buffer_size and ctx->code_gen_buffer, and simply return bool. Reviewed-by: Joelle van Dyne Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- accel/tcg/translate-all.c | 60 ++++++++++++++++++++++----------------- 1 file changed, 34 insertions(+), 26 deletions(-) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 224821943b..77444ddbbd 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -59,6 +59,7 @@ #include "sysemu/cpus.h" #include "sysemu/cpu-timers.h" #include "sysemu/tcg.h" +#include "qapi/error.h" =20 /* #define DEBUG_TB_INVALIDATE */ /* #define DEBUG_TB_FLUSH */ @@ -963,7 +964,7 @@ static void page_lock_pair(PageDesc **ret_p1, tb_page_a= ddr_t phys1, (DEFAULT_CODE_GEN_BUFFER_SIZE_1 < MAX_CODE_GEN_BUFFER_SIZE \ ? DEFAULT_CODE_GEN_BUFFER_SIZE_1 : MAX_CODE_GEN_BUFFER_SIZE) =20 -static inline size_t size_code_gen_buffer(size_t tb_size) +static size_t size_code_gen_buffer(size_t tb_size) { /* Size the buffer. */ if (tb_size =3D=3D 0) { @@ -1014,7 +1015,7 @@ static inline void *split_cross_256mb(void *buf1, siz= e_t size1) static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE] __attribute__((aligned(CODE_GEN_ALIGN))); =20 -static inline void *alloc_code_gen_buffer(void) +static bool alloc_code_gen_buffer(size_t tb_size, Error **errp) { void *buf =3D static_code_gen_buffer; void *end =3D static_code_gen_buffer + sizeof(static_code_gen_buffer); @@ -1027,9 +1028,8 @@ static inline void *alloc_code_gen_buffer(void) size =3D end - buf; =20 /* Honor a command-line option limiting the size of the buffer. */ - if (size > tcg_ctx->code_gen_buffer_size) { - size =3D QEMU_ALIGN_DOWN(tcg_ctx->code_gen_buffer_size, - qemu_real_host_page_size); + if (size > tb_size) { + size =3D QEMU_ALIGN_DOWN(tb_size, qemu_real_host_page_size); } tcg_ctx->code_gen_buffer_size =3D size; =20 @@ -1041,31 +1041,43 @@ static inline void *alloc_code_gen_buffer(void) #endif =20 if (qemu_mprotect_rwx(buf, size)) { - abort(); + error_setg_errno(errp, errno, "mprotect of jit buffer"); + return false; } qemu_madvise(buf, size, QEMU_MADV_HUGEPAGE); =20 - return buf; + tcg_ctx->code_gen_buffer =3D buf; + return true; } #elif defined(_WIN32) -static inline void *alloc_code_gen_buffer(void) +static bool alloc_code_gen_buffer(size_t size, Error **errp) { - size_t size =3D tcg_ctx->code_gen_buffer_size; - return VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT, - PAGE_EXECUTE_READWRITE); + void *buf =3D VirtualAlloc(NULL, size, MEM_RESERVE | MEM_COMMIT, + PAGE_EXECUTE_READWRITE); + if (buf =3D=3D NULL) { + error_setg_win32(errp, GetLastError(), + "allocate %zu bytes for jit buffer", size); + return false; + } + + tcg_ctx->code_gen_buffer =3D buf; + tcg_ctx->code_gen_buffer_size =3D size; + return true; } #else -static inline void *alloc_code_gen_buffer(void) +static bool alloc_code_gen_buffer(size_t size, Error **errp) { int prot =3D PROT_WRITE | PROT_READ | PROT_EXEC; int flags =3D MAP_PRIVATE | MAP_ANONYMOUS; - size_t size =3D tcg_ctx->code_gen_buffer_size; void *buf; =20 buf =3D mmap(NULL, size, prot, flags, -1, 0); if (buf =3D=3D MAP_FAILED) { - return NULL; + error_setg_errno(errp, errno, + "allocate %zu bytes for jit buffer", size); + return false; } + tcg_ctx->code_gen_buffer_size =3D size; =20 #ifdef __mips__ if (cross_256mb(buf, size)) { @@ -1104,20 +1116,11 @@ static inline void *alloc_code_gen_buffer(void) /* Request large pages for the buffer. */ qemu_madvise(buf, size, QEMU_MADV_HUGEPAGE); =20 - return buf; + tcg_ctx->code_gen_buffer =3D buf; + return true; } #endif /* USE_STATIC_CODE_GEN_BUFFER, WIN32, POSIX */ =20 -static inline void code_gen_alloc(size_t tb_size) -{ - tcg_ctx->code_gen_buffer_size =3D size_code_gen_buffer(tb_size); - tcg_ctx->code_gen_buffer =3D alloc_code_gen_buffer(); - if (tcg_ctx->code_gen_buffer =3D=3D NULL) { - fprintf(stderr, "Could not allocate dynamic translator buffer\n"); - exit(1); - } -} - static bool tb_cmp(const void *ap, const void *bp) { const TranslationBlock *a =3D ap; @@ -1144,11 +1147,16 @@ static void tb_htable_init(void) size. */ void tcg_exec_init(unsigned long tb_size) { + bool ok; + tcg_allowed =3D true; cpu_gen_init(); page_init(); tb_htable_init(); - code_gen_alloc(tb_size); + + ok =3D alloc_code_gen_buffer(size_code_gen_buffer(tb_size), &error_fat= al); + assert(ok); + #if defined(CONFIG_SOFTMMU) /* There's no guest base to take into account, so go ahead and initialize the prologue now. */ --=20 2.25.1