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a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=6IFa9wvqVegA:10 a=GoEa3M9JfhUA:10 a=P-IC7800AAAA:8 a=Ikd4Dj_1AAAA:8 a=yPCof4ZbAAAA:8 a=20KFwNOVAAAA:8 a=Bn3zVO4FMZJmmyU4TyAA:9 a=CjuIK1q_8ugA:10 a=d3PnA9EDa4IxuAV0gXij:22 X-Proofpoint-GUID: GFdkEB3rUWKhRNtaK5TnCRHxzQYY-abq X-Proofpoint-ORIG-GUID: GFdkEB3rUWKhRNtaK5TnCRHxzQYY-abq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjMwMDEzNCBTYWx0ZWRfX+fW+a3J+IC2k oCkw/fLEoNfSS3y/YeIpZPTpUogOH6ajsShvBTAWu8JLD2ftu0MQQsZ5KuuzyPP4NbgidkqTkRB Uu1eSXZddDPfTzcp3ew2EFnwwNMdRemj+4hk5Rh6HSsatKbo+Ybhe8V5hV+FrQxAxvdUezFHcy9 X/pblvr/Fg1toLEnmNDpaCew2VXSGrHjId5fOJORwGnm7iXXBgq6FnKZRcDi/imo+O7A3EPzkiu qD0BztHIetvuCxG/33Np/GmkbQem8CnmzVBdWRRdkRLpp11lZU8lqi61oqPKQcCZA/BNitqKLH4 5FjxcnuzfSrtK2UtZZb+hALSIluNidRpSr5RXr7dGmjpXqGnkXcLpr1yoaSOFyew9oSwpldM0if PsxoyuMxOleL88mEBbLFWfTfr2KtD2zFOx7RxZ+HkzH5qVJJN4hRzvrVtBNg2il15kSdHlcj On Mon, Jun 30, 2025 at 12:14:01PM -0400, Zi Yan wrote: > On 30 Jun 2025, at 12:01, Lorenzo Stoakes wrote: > > > On Mon, Jun 30, 2025 at 02:59:46PM +0200, David Hildenbrand wrote: > >> Let the page freeing code handle clearing the page type. > > > > Why is this advantageous? We want to keep the page marked offline for longer? > > > >> > >> Acked-by: Zi Yan > >> Acked-by: Harry Yoo > >> Signed-off-by: David Hildenbrand > > > > On assumption this UINT_MAX stuff is sane :)) I mean this is straightforward I > > guess: > > This is how page type is cleared. > See: https://elixir.bootlin.com/linux/v6.15.4/source/include/linux/page-flags.h#L1013. Doh did go looking there but missed this! I hate these macros so much. Almost designed to obfuscate. > > I agree with you that patch 4 should have a comment in free_pages_prepare() > about what the code is for and why UINT_MAX is used. Thx! > > > Best Regards, > Yan, Zi