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openSUSE:12.3
qemu
0021-linux-user-fix-segmentation-fault-p.patch
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File 0021-linux-user-fix-segmentation-fault-p.patch of Package qemu
From d53d69e169f1b1b7b0f4dc2e62110ffe9fdde0d3 Mon Sep 17 00:00:00 2001 From: Alexander Graf <agraf@suse.de> Date: Mon, 25 Jun 2012 19:02:32 +0200 Subject: [PATCH] linux-user: fix segmentation fault passing with g2h(x) != x MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit When forwarding a segmentation fault into the guest process, we were passing the host's address directly into the guest process's signal descriptor. That obviously confused the guest process, since it didn't know what to make of the (usually 32-bit truncated) address. Passing in g2h(address) makes the guest process a lot happier. This fixes java running in arm-linux-user for me. Signed-off-by: Alexander Graf <agraf@suse.de> [AF: Rebased onto AREG0 fix for v1.2, squashed fixup by agraf] Signed-off-by: Andreas Färber <afaerber@suse.de> --- user-exec.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/user-exec.c b/user-exec.c index 1ec5d9a..71afbf1 100644 --- a/user-exec.c +++ b/user-exec.c @@ -98,6 +98,12 @@ static inline int handle_cpu_signal(uintptr_t pc, unsigned long address, return 1; } + if (RESERVED_VA) { + /* Convert forcefully to guest address space, invalid addresses + are still valid segv ones */ + address = address - GUEST_BASE; + } + /* see if it is an MMU fault */ ret = cpu_handle_mmu_fault(cpu_single_env, address, is_write, MMU_USER_IDX);
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