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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [Qemu-devel] [PATCH 3/3] linux-user: Align mmap_find_vma to host page size
Date: Tue, 16 Oct 2018 18:54:56 -0700	[thread overview]
Message-ID: <20181017015456.3293-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20181017015456.3293-1-richard.henderson@linaro.org>

This can avoid stack allocation failures for i386 guest
on ppc64 (64k page) host.

Suggested-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/mmap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 47950ee9d7..735bc928fe 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -262,6 +262,8 @@ abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size, abi_ulong align)
     abi_ulong addr;
     int wrapped, repeat;
 
+    align = MAX(align, qemu_host_page_size);
+
     /* If 'start' == 0, then a default start address is used. */
     if (start == 0) {
         start = mmap_next_start;
-- 
2.17.2

      parent reply	other threads:[~2018-10-17  1:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-17  1:54 [Qemu-devel] [PATCH 0/3] linux-user: Fix shmat by honoring SHMLBA Richard Henderson
2018-10-17  1:54 ` [Qemu-devel] [PATCH 1/3] tests/tcg/multiarch/linux-test: Fix error check for shmat Richard Henderson
2018-10-17  1:54 ` [Qemu-devel] [PATCH 2/3] linux-user: Fix shmat emulation by honoring host SHMLBA Richard Henderson
2018-10-17  1:54 ` Richard Henderson [this message]

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