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linux-user: use libc wrapper instead of direct mremap syscall
This commit essentially reverts commit 3af72a4, which has replaced five-argument calls to mremap() by direct mremap syscalls for compatibility with glibc older than version 2.4. The direct syscall was buggy for 64bit targets on 32bit hosts because of the default integer type promotions. Since glibc-2.4 is now a decade old, we can remove this workaround. Signed-off-by: Felix Janda <felix.janda@posteo.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
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