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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::643; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x643.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: -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: pbonzini@redhat.com, j@getutm.app, laurent@vivier.eu Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) 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. Signed-off-by: Richard Henderson --- 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 c3e35bdee6..fca632eefa 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 */ @@ -973,7 +974,7 @@ 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) { @@ -1024,7 +1025,7 @@ 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); @@ -1037,9 +1038,8 @@ 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 @@ -1051,31 +1051,43 @@ 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)) { @@ -1114,20 +1126,11 @@ 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; @@ -1154,11 +1157,16 @@ 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