From: Borislav Petkov <bp@alien8.de> To: LKML <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org>, Andy Lutomirski <luto@amacapital.net>, arnd@arndb.de, Elliott@hp.com, hch@lst.de, hmh@hmh.eng.br, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>, jgross@suse.com, konrad.wilk@oracle.com, linux-mm <linux-mm@kvack.org>, linux-nvdimm@lists.01.org, "Luis R. Rodriguez" <mcgrof@suse.com>, stefan.bader@canonical.com, Thomas Gleixner <tglx@linutronix.de>, Toshi Kani <toshi.kani@hp.com>, x86-ml <x86@kernel.org>, yigal@plexistor.com Subject: [PATCH 2/4] x86/pat: Merge pat_init_cache_modes() into its caller Date: Sun, 31 May 2015 11:48:04 +0200 [thread overview] Message-ID: <1433065686-20922-2-git-send-email-bp@alien8.de> (raw) In-Reply-To: <1433065686-20922-1-git-send-email-bp@alien8.de> From: Borislav Petkov <bp@suse.de> This way we can pass pat MSR value directly. No functionality change. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: arnd@arndb.de Cc: Elliott@hp.com Cc: hch@lst.de Cc: hmh@hmh.eng.br Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: jgross@suse.com Cc: konrad.wilk@oracle.com Cc: linux-mm <linux-mm@kvack.org> Cc: linux-nvdimm@lists.01.org Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: stefan.bader@canonical.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: x86-ml <x86@kernel.org> Cc: yigal@plexistor.com --- arch/x86/mm/pat.c | 39 ++++++++++++++++----------------------- 1 file changed, 16 insertions(+), 23 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 476d0780560f..4d28759f5a1a 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -172,32 +172,14 @@ static enum page_cache_mode pat_get_cache_mode(unsigned pat_val, char *msg) #undef CM -/* - * Update the cache mode to pgprot translation tables according to PAT - * configuration. - * Using lower indices is preferred, so we start with highest index. - */ -void pat_init_cache_modes(void) -{ - int i; - enum page_cache_mode cache; - char pat_msg[33]; - u64 pat; - - rdmsrl(MSR_IA32_CR_PAT, pat); - pat_msg[32] = 0; - for (i = 7; i >= 0; i--) { - cache = pat_get_cache_mode((pat >> (i * 8)) & 7, - pat_msg + 4 * i); - update_cache_mode_entry(i, cache); - } - pr_info("x86/PAT: Configuration [0-7]: %s\n", pat_msg); -} - #define PAT(x, y) ((u64)PAT_ ## y << ((x)*8)) static void pat_bsp_init(u64 pat) { + enum page_cache_mode cache; + char pat_msg[33]; + int i; + if (!cpu_has_pat) { pat_disable("PAT not supported by CPU."); return; @@ -211,7 +193,18 @@ static void pat_bsp_init(u64 pat) wrmsrl(MSR_IA32_CR_PAT, pat); - pat_init_cache_modes(); + pat_msg[32] = 0; + + /* + * Update the cache mode to pgprot translation tables according to PAT + * configuration. Using lower indices is preferred, so we start with + * highest index. + */ + for (i = 7; i >= 0; i--) { + cache = pat_get_cache_mode((pat >> (i * 8)) & 7, pat_msg + 4 * i); + update_cache_mode_entry(i, cache); + } + pr_info("x86/PAT: Configuration [0-7]: %s\n", pat_msg); } static void pat_ap_init(u64 pat) -- 2.3.5
WARNING: multiple messages have this Message-ID (diff)
From: Borislav Petkov <bp@alien8.de> To: LKML <linux-kernel@vger.kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org>, Andy Lutomirski <luto@amacapital.net>, arnd@arndb.de, Elliott@hp.com, hch@lst.de, hmh@hmh.eng.br, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>, jgross@suse.com, konrad.wilk@oracle.com, linux-mm <linux-mm@kvack.org>, linux-nvdimm@ml01.01.org, "Luis R. Rodriguez" <mcgrof@suse.com>, stefan.bader@canonical.com, Thomas Gleixner <tglx@linutronix.de>, Toshi Kani <toshi.kani@hp.com>, x86-ml <x86@kernel.org>, yigal@plexistor.com Subject: [PATCH 2/4] x86/pat: Merge pat_init_cache_modes() into its caller Date: Sun, 31 May 2015 11:48:04 +0200 [thread overview] Message-ID: <1433065686-20922-2-git-send-email-bp@alien8.de> (raw) In-Reply-To: <1433065686-20922-1-git-send-email-bp@alien8.de> From: Borislav Petkov <bp@suse.de> This way we can pass pat MSR value directly. No functionality change. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: arnd@arndb.de Cc: Elliott@hp.com Cc: hch@lst.de Cc: hmh@hmh.eng.br Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: jgross@suse.com Cc: konrad.wilk@oracle.com Cc: linux-mm <linux-mm@kvack.org> Cc: linux-nvdimm@lists.01.org Cc: Luis R. Rodriguez <mcgrof@suse.com> Cc: stefan.bader@canonical.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: x86-ml <x86@kernel.org> Cc: yigal@plexistor.com --- arch/x86/mm/pat.c | 39 ++++++++++++++++----------------------- 1 file changed, 16 insertions(+), 23 deletions(-) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 476d0780560f..4d28759f5a1a 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -172,32 +172,14 @@ static enum page_cache_mode pat_get_cache_mode(unsigned pat_val, char *msg) #undef CM -/* - * Update the cache mode to pgprot translation tables according to PAT - * configuration. - * Using lower indices is preferred, so we start with highest index. - */ -void pat_init_cache_modes(void) -{ - int i; - enum page_cache_mode cache; - char pat_msg[33]; - u64 pat; - - rdmsrl(MSR_IA32_CR_PAT, pat); - pat_msg[32] = 0; - for (i = 7; i >= 0; i--) { - cache = pat_get_cache_mode((pat >> (i * 8)) & 7, - pat_msg + 4 * i); - update_cache_mode_entry(i, cache); - } - pr_info("x86/PAT: Configuration [0-7]: %s\n", pat_msg); -} - #define PAT(x, y) ((u64)PAT_ ## y << ((x)*8)) static void pat_bsp_init(u64 pat) { + enum page_cache_mode cache; + char pat_msg[33]; + int i; + if (!cpu_has_pat) { pat_disable("PAT not supported by CPU."); return; @@ -211,7 +193,18 @@ static void pat_bsp_init(u64 pat) wrmsrl(MSR_IA32_CR_PAT, pat); - pat_init_cache_modes(); + pat_msg[32] = 0; + + /* + * Update the cache mode to pgprot translation tables according to PAT + * configuration. Using lower indices is preferred, so we start with + * highest index. + */ + for (i = 7; i >= 0; i--) { + cache = pat_get_cache_mode((pat >> (i * 8)) & 7, pat_msg + 4 * i); + update_cache_mode_entry(i, cache); + } + pr_info("x86/PAT: Configuration [0-7]: %s\n", pat_msg); } static void pat_ap_init(u64 pat) -- 2.3.5
next prev parent reply other threads:[~2015-05-31 9:48 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 ` Borislav Petkov [this message] 2015-05-31 9:48 ` [PATCH 2/4] x86/pat: Merge pat_init_cache_modes() into its caller 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 ` [PATCH v11 2/12] x86, mm, pat: Refactor !pat_enabled handling Toshi Kani 2015-06-01 15:50 ` 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1433065686-20922-2-git-send-email-bp@alien8.de \ --to=bp@alien8.de \ --cc=Elliott@hp.com \ --cc=akpm@linux-foundation.org \ --cc=arnd@arndb.de \ --cc=hch@lst.de \ --cc=hmh@hmh.eng.br \ --cc=hpa@zytor.com \ --cc=jgross@suse.com \ --cc=konrad.wilk@oracle.com \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=linux-nvdimm@lists.01.org \ --cc=luto@amacapital.net \ --cc=mcgrof@suse.com \ --cc=mingo@redhat.com \ --cc=stefan.bader@canonical.com \ --cc=tglx@linutronix.de \ --cc=toshi.kani@hp.com \ --cc=x86@kernel.org \ --cc=yigal@plexistor.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.