From: Toshi Kani <toshi.kani@hp.com> To: Borislav Petkov <bp@alien8.de> Cc: hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-nvdimm@lists.01.org, jgross@suse.com, stefan.bader@canonical.com, luto@amacapital.net, hmh@hmh.eng.br, yigal@plexistor.com, konrad.wilk@oracle.com, Elliott@hp.com, mcgrof@suse.com, hch@lst.de Subject: Re: [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Date: Mon, 01 Jun 2015 09:50:15 -0600 [thread overview] Message-ID: <1433173815.23540.110.camel@misato.fc.hp.com> (raw) In-Reply-To: <20150531094655.GA20440@pd.tnic> On Sun, 2015-05-31 at 11:46 +0200, Borislav Petkov wrote: > On Fri, May 29, 2015 at 04:59:00PM -0600, Toshi Kani wrote: > > From: Toshi Kani <toshi.kani@hp.com> > > > > This patch refactors the !pat_enabled code paths and integrates > > them into the PAT abstraction code. The PAT table is emulated by > > corresponding to the two cache attribute bits, PWT (Write Through) > > and PCD (Cache Disable). The emulated PAT table is the same as the > > BIOS default setup when the system has PAT but the "nopat" boot > > option is specified. The emulated PAT table is also used when > > MSR_IA32_CR_PAT returns 0 -- 9d34cfdf4796 ("x86: Don't rely on > > VMWare emulating PAT MSR correctly"). > > To be honest, I wasn't surprised when you sent me the same patch and > ignored most of my comments. For the future, please let me know if I'm > wasting my time with commenting on your stuff so that I can plan my work > and not waste time and energy reviewing, ok? I apologize that I overlooked a comment requesting to divide this refactor patch into smaller patches. > Unfortunately, if you want something done right, you have to do it > yourself. > > So I did that, I split that ugly cleanup into something much more > readable, patches as a reply to this message. > > Feel free to base your work ontop of > > git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git#tip-mm-2 > I will look into your changes, and rebase the patchset. Thanks, -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Toshi Kani <toshi.kani@hp.com> To: Borislav Petkov <bp@alien8.de> Cc: hpa@zytor.com, tglx@linutronix.de, mingo@redhat.com, akpm@linux-foundation.org, arnd@arndb.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-nvdimm@ml01.01.org, jgross@suse.com, stefan.bader@canonical.com, luto@amacapital.net, hmh@hmh.eng.br, yigal@plexistor.com, konrad.wilk@oracle.com, Elliott@hp.com, mcgrof@suse.com, hch@lst.de Subject: Re: [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Date: Mon, 01 Jun 2015 09:50:15 -0600 [thread overview] Message-ID: <1433173815.23540.110.camel@misato.fc.hp.com> (raw) In-Reply-To: <20150531094655.GA20440@pd.tnic> On Sun, 2015-05-31 at 11:46 +0200, Borislav Petkov wrote: > On Fri, May 29, 2015 at 04:59:00PM -0600, Toshi Kani wrote: > > From: Toshi Kani <toshi.kani@hp.com> > > > > This patch refactors the !pat_enabled code paths and integrates > > them into the PAT abstraction code. The PAT table is emulated by > > corresponding to the two cache attribute bits, PWT (Write Through) > > and PCD (Cache Disable). The emulated PAT table is the same as the > > BIOS default setup when the system has PAT but the "nopat" boot > > option is specified. The emulated PAT table is also used when > > MSR_IA32_CR_PAT returns 0 -- 9d34cfdf4796 ("x86: Don't rely on > > VMWare emulating PAT MSR correctly"). > > To be honest, I wasn't surprised when you sent me the same patch and > ignored most of my comments. For the future, please let me know if I'm > wasting my time with commenting on your stuff so that I can plan my work > and not waste time and energy reviewing, ok? I apologize that I overlooked a comment requesting to divide this refactor patch into smaller patches. > Unfortunately, if you want something done right, you have to do it > yourself. > > So I did that, I split that ugly cleanup into something much more > readable, patches as a reply to this message. > > Feel free to base your work ontop of > > git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git#tip-mm-2 > I will look into your changes, and rebase the patchset. Thanks, -Toshi
next prev parent reply other threads:[~2015-06-01 15:50 UTC|newest] Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-05-29 22:58 [PATCH v11 0/12] Support Write-Through mapping on x86 Toshi Kani 2015-05-29 22:58 ` Toshi Kani 2015-05-29 22:58 ` [PATCH v11 1/12] x86, mm, pat: Cleanup init flags in pat_init() Toshi Kani 2015-05-29 22:58 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-31 9:46 ` Borislav Petkov 2015-05-31 9:46 ` Borislav Petkov 2015-05-31 9:48 ` [PATCH 1/4] x86/pat: Untangle pat_init() Borislav Petkov 2015-05-31 9:48 ` Borislav Petkov 2015-05-31 9:48 ` [PATCH 2/4] x86/pat: Merge pat_init_cache_modes() into its caller Borislav Petkov 2015-05-31 9:48 ` Borislav Petkov 2015-05-31 10:15 ` Juergen Gross 2015-05-31 10:15 ` Juergen Gross 2015-05-31 10:24 ` Borislav Petkov 2015-05-31 10:24 ` Borislav Petkov 2015-05-31 10:23 ` Borislav Petkov 2015-05-31 10:23 ` Borislav Petkov 2015-05-31 10:23 ` Borislav Petkov 2015-05-31 11:02 ` Juergen Gross 2015-05-31 11:02 ` Juergen Gross 2015-05-31 11:02 ` Juergen Gross 2015-06-01 18:15 ` Toshi Kani 2015-06-01 18:15 ` Toshi Kani 2015-06-01 18:15 ` Toshi Kani 2015-05-31 9:48 ` [PATCH 3/4] x86/pat: Emulate PAT when it is disabled Borislav Petkov 2015-05-31 9:48 ` Borislav Petkov 2015-05-31 9:48 ` [PATCH 4/4] x86/pat: Remove pat_enabled() checks Borislav Petkov 2015-05-31 9:48 ` Borislav Petkov 2015-06-01 18:26 ` Toshi Kani 2015-06-01 18:26 ` Toshi Kani 2015-06-01 18:51 ` Borislav Petkov 2015-06-01 18:51 ` Borislav Petkov 2015-06-01 16:17 ` [PATCH 1/4] x86/pat: Untangle pat_init() Toshi Kani 2015-06-01 16:17 ` Toshi Kani 2015-06-01 15:50 ` Toshi Kani [this message] 2015-06-01 15:50 ` [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Toshi Kani 2015-05-29 22:59 ` [PATCH v11 3/12] x86, mm, pat: Set WT to PA7 slot of PAT MSR Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 4/12] x86, mm, pat: Change reserve_memtype() for WT Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 5/12] x86, asm: Change is_new_memtype_allowed() " Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 6/12] x86, mm, asm-gen: Add ioremap_wt() " Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-30 9:18 ` Geert Uytterhoeven 2015-05-30 9:18 ` Geert Uytterhoeven 2015-05-31 0:58 ` Toshi Kani 2015-05-31 0:58 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 7/12] arch/*/asm/io.h: Add ioremap_wt() to all architectures Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 8/12] video/fbdev, asm/io.h: Remove ioremap_writethrough() Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 9/12] x86, mm, pat: Add pgprot_writethrough() for WT Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 10/12] x86, mm, asm: Add WT support to set_page_memtype() Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 11/12] x86, mm: Add set_memory_wt() for WT Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-29 22:59 ` [PATCH v11 12/12] drivers/block/pmem: Map NVDIMM with ioremap_wt() Toshi Kani 2015-05-29 22:59 ` Toshi Kani 2015-05-30 1:18 ` Dan Williams 2015-05-30 1:18 ` Dan Williams
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