From: Christoph Hellwig <hch@lst.de> To: Wei Fu <wefu@redhat.com> Cc: "Christoph Hellwig" <hch@infradead.org>, "Anup Patel" <anup.patel@wdc.com>, "Atish Patra" <atish.patra@wdc.com>, "Palmer Dabbelt" <palmerdabbelt@google.com>, guoren@kernel.org, christoph.muellner@vrull.eu, "Philipp Tomsich" <philipp.tomsich@vrull.eu>, "Christoph Hellwig" <hch@lst.de>, "Liu Shaohua" <liush@allwinnertech.com>, "Wei Wu (吴伟)" <lazyparser@gmail.com>, "Drew Fustini" <drew@beagleboard.org>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, taiten.peng@canonical.com, aniket.ponkshe@canonical.com, heinrich.schuchardt@canonical.com, gordan.markus@canonical.com, guoren@linux.alibaba.com, "Arnd Bergmann" <arnd@arndb.de>, "Chen-Yu Tsai" <wens@csie.org>, "Maxime Ripard" <maxime@cerno.tech>, "Daniel Lustig" <dlustig@nvidia.com>, "Greg Favor" <gfavor@ventanamicro.com>, "Andrea Mondelli" <andrea.mondelli@huawei.com>, "Jonathan Behrens" <behrensj@mit.edu>, Xinhaoqu <xinhaoqu@huawei.com>, "Bill Huffman" <huffman@cadence.com>, "Nick Kossifidis" <mick@ics.forth.gr>, "Allen Baum" <allen.baum@esperantotech.com>, "Josh Scheid" <jscheid@ventanamicro.com>, "Richard Trauben" <rtrauben@gmail.com> Subject: Re: [RESEND PATCH V3 2/2] riscv: add RISC-V Svpbmt extension supports Date: Tue, 2 Nov 2021 07:04:24 +0100 [thread overview] Message-ID: <20211102060424.GA27015@lst.de> (raw) In-Reply-To: <CA+YCwKn1VA8=NSa=bdhP99jfpokYGHBvqVSKvZmdndQOz6UUPA@mail.gmail.com> On Mon, Oct 25, 2021 at 10:49:11PM +0800, Wei Fu wrote: > > > + >> _PAGE_PFN_SHIFT); > > > > > static inline unsigned long _pmd_pfn(pmd_t pmd) > > > { > > > - return pmd_val(pmd) >> _PAGE_PFN_SHIFT; > > > + return (pmd_val(pmd) & _PAGE_CHG_MASK) >> _PAGE_PFN_SHIFT; > > > } > > > > The "(pud_val(pud) & _PAGE_CHG_MASK) >> _PAGE_PFN_SHIFT" expression begs > > for readable and well-documented helper. > > How about these: > #define _chg_of_pmd(pmd) (pmd_val(pmd) & _PAGE_CHG_MASK) > #define _chg_of_pud(pud) (pud_val(pud) & _PAGE_CHG_MASK) I'd use inline functions instead of macros if possible, but otherwise yes. > How about : > > extern unsigned long _svpbmt_mask > extern unsigned long _svpbmt_mt_pma > extern unsigned long _svpbmt_mt_nc > extern unsigned long _svpbmt_mt_io > > #define _PAGE_MT_MASK _svpbmt_mask > #define _PAGE_MT_PMA _svpbmt_mt_pma > #define _PAGE_MT_NC _svpbmt_mt_nc > #define _PAGE_MT_IO _svpbmt_mt_io Looks much better.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de> To: Wei Fu <wefu@redhat.com> Cc: "Christoph Hellwig" <hch@infradead.org>, "Anup Patel" <anup.patel@wdc.com>, "Atish Patra" <atish.patra@wdc.com>, "Palmer Dabbelt" <palmerdabbelt@google.com>, guoren@kernel.org, christoph.muellner@vrull.eu, "Philipp Tomsich" <philipp.tomsich@vrull.eu>, "Christoph Hellwig" <hch@lst.de>, "Liu Shaohua" <liush@allwinnertech.com>, "Wei Wu (吴伟)" <lazyparser@gmail.com>, "Drew Fustini" <drew@beagleboard.org>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, taiten.peng@canonical.com, aniket.ponkshe@canonical.com, heinrich.schuchardt@canonical.com, gordan.markus@canonical.com, guoren@linux.alibaba.com, "Arnd Bergmann" <arnd@arndb.de>, "Chen-Yu Tsai" <wens@csie.org>, "Maxime Ripard" <maxime@cerno.tech>, "Daniel Lustig" <dlustig@nvidia.com>, "Greg Favor" <gfavor@ventanamicro.com>, "Andrea Mondelli" <andrea.mondelli@huawei.com>, "Jonathan Behrens" <behrensj@mit.edu>, Xinhaoqu <xinhaoqu@huawei.com>, "Bill Huffman" <huffman@cadence.com>, "Nick Kossifidis" <mick@ics.forth.gr>, "Allen Baum" <allen.baum@esperantotech.com>, "Josh Scheid" <jscheid@ventanamicro.com>, "Richard Trauben" <rtrauben@gmail.com> Subject: Re: [RESEND PATCH V3 2/2] riscv: add RISC-V Svpbmt extension supports Date: Tue, 2 Nov 2021 07:04:24 +0100 [thread overview] Message-ID: <20211102060424.GA27015@lst.de> (raw) In-Reply-To: <CA+YCwKn1VA8=NSa=bdhP99jfpokYGHBvqVSKvZmdndQOz6UUPA@mail.gmail.com> On Mon, Oct 25, 2021 at 10:49:11PM +0800, Wei Fu wrote: > > > + >> _PAGE_PFN_SHIFT); > > > > > static inline unsigned long _pmd_pfn(pmd_t pmd) > > > { > > > - return pmd_val(pmd) >> _PAGE_PFN_SHIFT; > > > + return (pmd_val(pmd) & _PAGE_CHG_MASK) >> _PAGE_PFN_SHIFT; > > > } > > > > The "(pud_val(pud) & _PAGE_CHG_MASK) >> _PAGE_PFN_SHIFT" expression begs > > for readable and well-documented helper. > > How about these: > #define _chg_of_pmd(pmd) (pmd_val(pmd) & _PAGE_CHG_MASK) > #define _chg_of_pud(pud) (pud_val(pud) & _PAGE_CHG_MASK) I'd use inline functions instead of macros if possible, but otherwise yes. > How about : > > extern unsigned long _svpbmt_mask > extern unsigned long _svpbmt_mt_pma > extern unsigned long _svpbmt_mt_nc > extern unsigned long _svpbmt_mt_io > > #define _PAGE_MT_MASK _svpbmt_mask > #define _PAGE_MT_PMA _svpbmt_mt_pma > #define _PAGE_MT_NC _svpbmt_mt_nc > #define _PAGE_MT_IO _svpbmt_mt_io Looks much better. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2021-11-02 6:04 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-25 4:06 [RESEND PATCH V3 0/2] riscv: add RISC-V Svpbmt Standard Extension supports wefu 2021-10-25 4:06 ` wefu 2021-10-25 4:06 ` [RESEND PATCH V3 1/2] dt-bindings: riscv: add mmu-supports-svpbmt for Svpbmt wefu 2021-10-25 4:06 ` wefu 2021-10-25 4:17 ` Anup Patel 2021-10-25 4:17 ` Anup Patel 2021-10-25 6:00 ` Guo Ren 2021-10-25 6:00 ` Guo Ren 2021-10-25 6:08 ` Anup Patel 2021-10-25 6:08 ` Anup Patel 2021-10-25 13:21 ` Philipp Tomsich 2021-10-25 13:21 ` Philipp Tomsich 2021-10-25 6:09 ` Guo Ren 2021-10-25 6:09 ` Guo Ren 2021-10-25 4:06 ` [RESEND PATCH V3 2/2] riscv: add RISC-V Svpbmt extension supports wefu 2021-10-25 4:06 ` wefu 2021-10-25 6:55 ` Christoph Hellwig 2021-10-25 6:55 ` Christoph Hellwig 2021-10-25 10:55 ` Wei Fu 2021-10-25 10:55 ` Wei Fu 2021-11-02 6:07 ` Christoph Hellwig 2021-11-02 6:07 ` Christoph Hellwig 2021-11-07 7:23 ` Wei Fu 2021-11-07 7:23 ` Wei Fu 2021-10-25 14:49 ` Wei Fu 2021-10-25 14:49 ` Wei Fu 2021-11-02 6:04 ` Christoph Hellwig [this message] 2021-11-02 6:04 ` Christoph Hellwig 2021-11-07 6:54 ` Wei Fu 2021-11-07 6:54 ` Wei Fu 2021-10-27 0:12 ` [RESEND PATCH V3 0/2] riscv: add RISC-V Svpbmt Standard Extension supports Palmer Dabbelt 2021-10-27 0:12 ` Palmer Dabbelt 2021-10-27 7:54 ` Heinrich Schuchardt 2021-10-27 7:54 ` Heinrich Schuchardt 2021-11-02 2:07 ` Guo Ren 2021-11-02 2:07 ` Guo Ren 2021-11-02 5:58 ` Christoph Hellwig 2021-11-02 5:58 ` Christoph Hellwig 2021-11-02 8:51 ` Guo Ren 2021-11-02 8:51 ` Guo Ren 2021-11-07 7:12 ` Wei Fu 2021-11-07 7:12 ` Wei Fu 2021-11-08 7:52 ` Christoph Hellwig 2021-11-08 7:52 ` Christoph Hellwig 2021-11-26 16:23 ` Wei Fu 2021-11-26 16:23 ` Wei Fu
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