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[173.198.77.218]) by smtp.gmail.com with ESMTPSA id q1sm21835039pfn.6.2021.08.09.14.05.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Aug 2021 14:05:10 -0700 (PDT) Subject: Re: [PATCH for 6.2 29/49] bsd-user: Add system independent stack, data and text limiting To: Warner Losh , qemu-devel@nongnu.org References: <20210807214242.82385-1-imp@bsdimp.com> <20210807214242.82385-30-imp@bsdimp.com> From: Richard Henderson Message-ID: Date: Mon, 9 Aug 2021 11:05:07 -1000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210807214242.82385-30-imp@bsdimp.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::102a; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kevans@freebsd.org, Warner Losh , Stacey Son Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 8/7/21 11:42 AM, Warner Losh wrote: > From: Warner Losh > > Eliminate the x86 specific stack stuff in favor of more generic control > over the process size: > target_maxtsiz max text size > target_dfldsiz initial data size limit > target_maxdsiz max data size > target_dflssiz initial stack size limit > target_maxssiz max stack size > target_sgrowsiz amount to grow stack > These can be set on a per-arch basis, and the stack size can be set > on the command line. Adjust the stack size parameters at startup. > > Signed-off-by: Stacey Son > Signed-off-by: Warner Losh > > Sponsored by: Netflix > --- > bsd-user/elfload.c | 2 +- > bsd-user/main.c | 51 +++++++++++++++++++++++++++++++++------------- > bsd-user/qemu.h | 7 ++++++- > 3 files changed, 44 insertions(+), 16 deletions(-) Reviewed-by: Richard Henderson r~