* [Qemu-devel] [BUG] syscall mmap broken
@ 2007-01-08 8:11 Kirill A. Shutemov
2007-01-08 16:21 ` Paul Brook
0 siblings, 1 reply; 3+ messages in thread
From: Kirill A. Shutemov @ 2007-01-08 8:11 UTC (permalink / raw)
To: qemu-devel
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On a 64-bit host system mmap sometimes(quite rarely on x86_64) return
address above 0xffffffff. If target system is a 32-bit system then mojor
32-bit will be dropped due to h2g().
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [BUG] syscall mmap broken
2007-01-08 8:11 [Qemu-devel] [BUG] syscall mmap broken Kirill A. Shutemov
@ 2007-01-08 16:21 ` Paul Brook
2007-01-10 13:06 ` Kirill A. Shutemov
0 siblings, 1 reply; 3+ messages in thread
From: Paul Brook @ 2007-01-08 16:21 UTC (permalink / raw)
To: qemu-devel; +Cc: Kirill A. Shutemov
On Monday 08 January 2007 08:11, Kirill A. Shutemov wrote:
> On a 64-bit host system mmap sometimes(quite rarely on x86_64) return
> address above 0xffffffff. If target system is a 32-bit system then mojor
> 32-bit will be dropped due to h2g().
We should be using MAP_32BIT or MAP_FIXED.
Paul
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [BUG] syscall mmap broken
2007-01-08 16:21 ` Paul Brook
@ 2007-01-10 13:06 ` Kirill A. Shutemov
0 siblings, 0 replies; 3+ messages in thread
From: Kirill A. Shutemov @ 2007-01-10 13:06 UTC (permalink / raw)
To: qemu-devel; +Cc: Paul Brook
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On [Mon, 08.01.2007 16:21], Paul Brook wrote:
> On Monday 08 January 2007 08:11, Kirill A. Shutemov wrote:
> > On a 64-bit host system mmap sometimes(quite rarely on x86_64) return
> > address above 0xffffffff. If target system is a 32-bit system then mojor
> > 32-bit will be dropped due to h2g().
>
> We should be using MAP_32BIT or MAP_FIXED.
But MAP_32BIT can be only used for x86_64. What about other 64-bit host
system? It seems that right way to write VM for linux-user emulators.
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-01-08 8:11 [Qemu-devel] [BUG] syscall mmap broken Kirill A. Shutemov
2007-01-08 16:21 ` Paul Brook
2007-01-10 13:06 ` Kirill A. Shutemov
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