From 0260a51fc6ee88f374a7f3dca974440f7fc94825 Mon Sep 17 00:00:00 2001 From: Maxim Ostapenko Date: Fri, 8 Jul 2016 15:47:42 +0300 Subject: [PATCH] ASan-related hack to speedup aarch64 builds. Switch off memory pages checks in qemu if memory regions are mapped by ASan Change-Id: I8233802ee35db00c799f5645072b8014f823b5c6 Signed-off-by: Maxim Ostapenko --- translate-all.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/translate-all.c b/translate-all.c index 1e7c61b..5f66573 100644 --- a/translate-all.c +++ b/translate-all.c @@ -1291,6 +1291,16 @@ TranslationBlock *tb_gen_code(CPUState *cpu, */ void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end) { +#if TARGET_LONG_SIZE == 8 + target_ulong asan_low_shadow_start = 0x0ffffff000; + target_ulong asan_shadow_gap_start = 0x1200000000; + target_ulong asan_high_shadow_start = 0x1400000000; + + if (start == asan_low_shadow_start || start == asan_shadow_gap_start + || start == asan_high_shadow_start) + return; +#endif + while (start < end) { tb_invalidate_phys_page_range(start, end, 0); start &= TARGET_PAGE_MASK; @@ -1947,6 +1957,16 @@ void page_set_flags(target_ulong start, target_ulong end, int flags) flags |= PAGE_WRITE_ORG; } +#if TARGET_LONG_SIZE == 8 + target_ulong asan_low_shadow_start = 0x0ffffff000; + target_ulong asan_shadow_gap_start = 0x1200000000; + target_ulong asan_high_shadow_start = 0x1400000000; + + if (start == asan_low_shadow_start || start == asan_shadow_gap_start + || start == asan_high_shadow_start) + return; +#endif + for (addr = start, len = end - start; len != 0; len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { @@ -1988,6 +2008,16 @@ int page_check_range(target_ulong start, target_ulong len, int flags) end = TARGET_PAGE_ALIGN(start + len); start = start & TARGET_PAGE_MASK; +#if TARGET_LONG_SIZE == 8 + target_ulong asan_low_shadow_start = 0x0ffffff000; + target_ulong asan_shadow_gap_start = 0x1200000000; + target_ulong asan_high_shadow_start = 0x1400000000; + + if (start == asan_low_shadow_start || start == asan_shadow_gap_start + || start == asan_high_shadow_start) + return 0; +#endif + for (addr = start, len = end - start; len != 0; len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { -- 2.7.4