From d5dd696fe3049657c08eb14f40cb74b6e94e79cc Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 21 Sep 2012 10:40:48 -0700 Subject: [PATCH] tcg-sparc: Don't MAP_FIXED on top of the program The address we pick in sparc64.ld is also 0x60000000, so doing a fixed map on top of that is guaranteed to blow up. Choosing 0x40000000 is exactly right for the max of code_gen_buffer_size set below. No need to ever use MAP_FIXED. While getting our desired address helps optimize the generated code, we won't fail if we don't get it. Signed-off-by: Richard Henderson --- exec.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/exec.c b/exec.c index f22e9e6951..4510985f1f 100644 --- a/exec.c +++ b/exec.c @@ -543,8 +543,7 @@ static void code_gen_alloc(unsigned long tb_size) code_gen_buffer_size = (800 * 1024 * 1024); #elif defined(__sparc_v9__) // Map the buffer below 2G, so we can use direct calls and branches - flags |= MAP_FIXED; - start = (void *) 0x60000000UL; + start = (void *) 0x40000000UL; if (code_gen_buffer_size > (512 * 1024 * 1024)) code_gen_buffer_size = (512 * 1024 * 1024); #elif defined(__arm__) @@ -584,8 +583,7 @@ static void code_gen_alloc(unsigned long tb_size) code_gen_buffer_size = (800 * 1024 * 1024); #elif defined(__sparc_v9__) // Map the buffer below 2G, so we can use direct calls and branches - flags |= MAP_FIXED; - addr = (void *) 0x60000000UL; + addr = (void *) 0x40000000UL; if (code_gen_buffer_size > (512 * 1024 * 1024)) { code_gen_buffer_size = (512 * 1024 * 1024); } -- GitLab