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R . Silva" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jennifer Miller , Tiffany Bao , Ruoyu Wang , Adam Doupe , Kyle Zeng , Yan Shoshitaishvili References: <20260626173444.2252041-1-xmei5@asu.edu> Content-Language: en-US, sv-SE From: "H. Peter Anvin" In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 236F4100006 X-Rspam-User: X-Stat-Signature: qx5k64tyot6ywa6mhan1nyyxqrzcgi84 X-HE-Tag: 1782699006-953600 X-HE-Meta: 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 z6qupM1t ynSKWDi/4o/2SE2mcy19vxqov50+lOhFvjx0PMcOeUV6nBB4sbTuOI2amQ4Ccxvr1dMvj4gFsChmFIyg59VlonQBIiqzfH5rirvLSfxYC5skHKn1qPOs5tWpx9lPo6adUGmjRiKrGJXtiMWgF7oJPDbNnJCUFrlMeLy5Z1r7amsAqYr5RW0bRLRGgUR07go/e1PIkXuGeX0A6O4vg57leqe4jkEC9w/iCTMt2FYaxj8cUklOkvq1Fouc+IdhjLP7+tbP7a6W8CBlul+4U67gfVhhSpppq0PtMRW8KmRhdlJgdE6yqKrd++xWJVQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2026-06-26 13:05, Xiang Mei wrote: > > Thanks for your questions and attention. > > 1) `enter` can do big enough stack pivoting (where we can't find many > `add/sub/adc/sbb rsp, ` doing so) Say what? Using add/sub/lea on %rsp is probably more common than enter, because enter is considered kind of slow. gcc, I believe, will generate "leave" but not "enter" as a result. > 2) `enter` is not rare since we can take part in the instruction. This sentence doesn't parse. -hpa