March 2021 - Cloud Kernel - lists.openanolis.cn

[patch v1 2/3] PCI: Add ACS quirk for Zhaoxin multi-function devices

by LeoLiu-oc

commit 0325837c51cb7c9a5bd3e354ac0c0cda0667d50e upstream. Some Zhaoxin endpoints are implemented as multi-function devices without an ACS capability, but they actually don't support peer-to-peer transactions. Add ACS quirks to declare DMA isolation. Link: https://lore.kernel.org/r/20200327091148.5190-3-RaymondPang-oc@zhaoxin.com Signed-off-by: Raymond Pang <RaymondPang-oc(a)zhaoxin.com> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- drivers/pci/quirks.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index bae232185032..9c82ba1b2156 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4538,6 +4538,10 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs }, + /* Zhaoxin multi-function devices */ + { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs }, { 0 } }; -- 2.20.1

3 years, 1 month

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[patch v1 1/3] PCI: Add Zhaoxin Vendor ID

by LeoLiu-oc

commit 3375590623e4a132b19a8740512f4deb95728933 upstream. Add Zhaoxin Vendor ID to pci_ids.h Link: https://lore.kernel.org/r/20200327091148.5190-2-RaymondPang-oc@zhaoxin.com Signed-off-by: Raymond Pang <RaymondPang-oc(a)zhaoxin.com> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- include/linux/pci_ids.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index f47a9f6f95b7..a62a654bda7f 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2562,6 +2562,8 @@ #define PCI_VENDOR_ID_AMAZON 0x1d0f +#define PCI_VENDOR_ID_ZHAOXIN 0x1d17 + #define PCI_VENDOR_ID_HYGON 0x1d94 #define PCI_VENDOR_ID_TEKRAM 0x1de1 -- 2.20.1

3 years, 1 month

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[patch v1 0/3] Add ACS quirk for Zhaoxin

by LeoLiu-oc

Lots of Zhaoxin PCIe components have no ACS Capability Structure, but do have ACS-like capability which ensures DMA isolation. This patch makes isolated devices could be directly assigned to different VMs through IOMMU. LeoLiu-oc (3): PCI: Add Zhaoxin Vendor ID PCI: Add ACS quirk for Zhaoxin multi-function devices PCI: Add ACS quirk for Zhaoxin Root/Downstream Ports drivers/pci/quirks.c | 31 +++++++++++++++++++++++++++++++ include/linux/pci_ids.h | 2 ++ 2 files changed, 33 insertions(+) -- 2.20.1

3 years, 1 month

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[patch v1 0/3] Add support of Zhaoxin HDAC and codec.

by LeoLiu-oc

Zhaoxin have new SB & NB HDAC controller. And have new NB HDAC codec. This patch set add support for them. LeoLiu-oc (3): ck: ALSA: hda: Add support of Zhaoxin SB HDAC ck: ALSA: hda: Add support of Zhaoxin NB HDAC ck: ALSA: hda: Add support of Zhaoxin NB HDAC codec sound/pci/hda/hda_controller.c | 17 ++++++++- sound/pci/hda/hda_controller.h | 2 + sound/pci/hda/hda_intel.c | 68 +++++++++++++++++++++++++++++++++- sound/pci/hda/patch_hdmi.c | 26 +++++++++++++ 4 files changed, 111 insertions(+), 2 deletions(-) -- 2.20.1

3 years, 1 month

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[patch v1] ck: crypto: x86/crc32c-intel - Don't match some Zhaoxin CPUs

by LeoLiu-oc

The driver crc32c-intel match CPUs supporting X86_FEATURE_XMM4_2. On platforms with Zhaoxin CPUs supporting this X86 feature, when crc32c-intel and crc32c-generic are both registered, system will use crc32c-intel because its .cra_priority is greater than crc32c-generic. When doing lmbench3 Create and Delete file test on partitions with ext4 enabling metadata checksum, found using crc32c-generic driver could get about 20% performance gain than using the driver crc32c-intel on some Zhaoxin CPUs. This case expect to use crc32c-generic driver for these Zhaoxin CPUs to get performance gain, so remove these Zhaoxin CPUs support from crc32c-intel. This patch was submitted to mainline kernel but not accepted by upstream maintainer whose reason is "Then create a BUG flag for it,". We think this is not a CPU bug for Zhaoxin CPUs. So should patch the crc32c driver for Zhaoxin CPUs but not report a BUG. https://lkml.org/lkml/2020/12/11/308 Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- arch/x86/crypto/crc32c-intel_glue.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/crypto/crc32c-intel_glue.c b/arch/x86/crypto/crc32c-intel_glue.c index 5773e1161072..d994bd49761a 100644 --- a/arch/x86/crypto/crc32c-intel_glue.c +++ b/arch/x86/crypto/crc32c-intel_glue.c @@ -242,8 +242,13 @@ MODULE_DEVICE_TABLE(x86cpu, crc32c_cpu_id); static int __init crc32c_intel_mod_init(void) { + struct cpuinfo_x86 *c = &boot_cpu_data; if (!x86_match_cpu(crc32c_cpu_id)) return -ENODEV; + if ((c->x86_vendor == X86_VENDOR_ZHAOXIN || c->x86_vendor == X86_VENDOR_CENTAUR) && + (c->x86 <= 7 && c->x86_model <= 59)) { + return -ENODEV; + } #ifdef CONFIG_X86_64 if (boot_cpu_has(X86_FEATURE_PCLMULQDQ)) { alg.update = crc32c_pcl_intel_update; -- 2.20.1

3 years, 1 month

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[patch v1 2/2] x86/speculation/swapgs: Exclude Zhaoxin CPUs from SWAPGS vulnerability

by LeoLiu-oc

commit a84de2fa962c1b0551653fe245d6cb5f6129179c upstream. New Zhaoxin family 7 CPUs are not affected by the SWAPGS vulnerability. So mark these CPUs in the cpu vulnerability whitelist accordingly. Signed-off-by: Tony W Wang-oc <TonyWWang-oc(a)zhaoxin.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Link: https://lore.kernel.org/r/1579227872-26972-3-git-send-email-TonyWWang-oc@zh… Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- arch/x86/kernel/cpu/common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 1560b87ca1ee..1e25395c2318 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1000,8 +1000,8 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = { VULNWL_HYGON(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT), /* Zhaoxin Family 7 */ - VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2), - VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2), + VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS), + VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2 | NO_SWAPGS), {} }; -- 2.20.1

3 years, 1 month

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[patch v1 1/2] x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2

by LeoLiu-oc

commit 1e41a766c98b481400ab8c5a7aa8ea63a1bb03de upstream. New Zhaoxin family 7 CPUs are not affected by SPECTRE_V2. So define a separate cpu_vuln_whitelist bit NO_SPECTRE_V2 and add these CPUs to the cpu vulnerability whitelist. Signed-off-by: Tony W Wang-oc <TonyWWang-oc(a)zhaoxin.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Link: https://lore.kernel.org/r/1579227872-26972-2-git-send-email-TonyWWang-oc@zh… Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- arch/x86/kernel/cpu/common.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 1dc4ec01dad1..1560b87ca1ee 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -937,6 +937,7 @@ static void identify_cpu_without_cpuid(struct cpuinfo_x86 *c) #define MSBDS_ONLY BIT(5) #define NO_SWAPGS BIT(6) #define NO_ITLB_MULTIHIT BIT(7) +#define NO_SPECTRE_V2 BIT(8) #define VULNWL(_vendor, _family, _model, _whitelist) \ { X86_VENDOR_##_vendor, _family, _model, X86_FEATURE_ANY, _whitelist } @@ -997,6 +998,10 @@ static const __initconst struct x86_cpu_id cpu_vuln_whitelist[] = { /* FAMILY_ANY must be last, otherwise 0x0f - 0x12 matches won't work */ VULNWL_AMD(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT), VULNWL_HYGON(X86_FAMILY_ANY, NO_MELTDOWN | NO_L1TF | NO_MDS | NO_SWAPGS | NO_ITLB_MULTIHIT), + + /* Zhaoxin Family 7 */ + VULNWL(CENTAUR, 7, X86_MODEL_ANY, NO_SPECTRE_V2), + VULNWL(ZHAOXIN, 7, X86_MODEL_ANY, NO_SPECTRE_V2), {} }; @@ -1051,7 +1056,9 @@ static void __init cpu_set_bug_bits(struct cpuinfo_x86 *c) return; setup_force_cpu_bug(X86_BUG_SPECTRE_V1); - setup_force_cpu_bug(X86_BUG_SPECTRE_V2); + + if (!cpu_matches(cpu_vuln_whitelist, NO_SPECTRE_V2)) + setup_force_cpu_bug(X86_BUG_SPECTRE_V2); if (!cpu_matches(cpu_vuln_whitelist, NO_SSB) && !(ia32_cap & ARCH_CAP_SSB_NO) && -- 2.20.1

3 years, 1 month

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[patch v1 0/2] x86/bugs: Exclude Zhaoxin family 7 CPUs

by LeoLiu-oc

New Zhaoxin family 7 CPUs are not affected by SPECTRE_V2, SWAPGS. Extend cpu_vuln_whitelist flag with a NO_SPECTRE_V2 bit. And add these CPUs to the cpu vulnerability whitelist. LeoLiu-oc (2): x86/speculation/spectre_v2: Exclude Zhaoxin CPUs from SPECTRE_V2 x86/speculation/swapgs: Exclude Zhaoxin CPUs from SWAPGS vulnerability arch/x86/kernel/cpu/common.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) -- 2.20.1

3 years, 1 month

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[patch v1 3/3] x86/mce: Add Zhaoxin LMCE support

by LeoLiu-oc

commit 70f0c230031dfef3c9b3e37b2a8c18d3f7186fb2 upstream. Newer Zhaoxin CPUs support LMCE compatible with Intel. Add support for that. [ bp: Export functions and massage. ] Signed-off-by: Tony W Wang-oc <TonyWWang-oc(a)zhaoxin.com> Signed-off-by: Borislav Petkov <bp(a)suse.de> Cc: CooperYan(a)zhaoxin.com Cc: DavidWang(a)zhaoxin.com Cc: HerryYang(a)zhaoxin.com Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: linux-edac <linux-edac(a)vger.kernel.org> Cc: QiyuanWang(a)zhaoxin.com Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Tony Luck <tony.luck(a)intel.com> Cc: x86-ml <x86(a)kernel.org> Link: https://lkml.kernel.org/r/1568787573-1297-5-git-send-email-TonyWWang-oc@zha… [ LeoLiu-oc: Add support for more Zhaoxin CPUs and adapt to the current MCE directory ] Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- arch/x86/kernel/cpu/mcheck/mce-internal.h | 4 ++++ arch/x86/kernel/cpu/mcheck/mce.c | 25 +++++++++++++++++++++-- arch/x86/kernel/cpu/mcheck/mce_intel.c | 4 ++-- 3 files changed, 29 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h index 79936eaec14b..6bc9d8991efa 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-internal.h +++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h @@ -54,12 +54,16 @@ bool mce_intel_cmci_poll(void); void mce_intel_hcpu_update(unsigned long cpu); void cmci_disable_bank(int bank); void intel_init_cmci(void); +void intel_init_lmce(void); +void intel_clear_lmce(void); #else # define cmci_intel_adjust_timer mce_adjust_timer_default static inline bool mce_intel_cmci_poll(void) { return false; } static inline void mce_intel_hcpu_update(unsigned long cpu) { } static inline void cmci_disable_bank(int bank) { } static inline void intel_init_cmci(void) { } +static inline void intel_init_lmce(void) { } +static inline void intel_clear_lmce(void) { } #endif void mce_timer_kick(unsigned long interval); diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index ace64069152d..95267d1d458f 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1099,6 +1099,13 @@ static bool mce_check_crashing_cpu(void) u64 mcgstatus; mcgstatus = mce_rdmsrl(MSR_IA32_MCG_STATUS); + + if (boot_cpu_data.x86_vendor == X86_VENDOR_ZHAOXIN || + boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR) { + if (mcgstatus & MCG_STATUS_LMCES) + return false; + } + if (mcgstatus & MCG_STATUS_RIPV) { mce_wrmsrl(MSR_IA32_MCG_STATUS, 0); return true; @@ -1285,9 +1292,11 @@ void do_machine_check(struct pt_regs *regs, long error_code) /* * Check if this MCE is signaled to only this logical processor, - * on Intel only. + * on Intel, Zhaoxin only. */ - if (m.cpuvendor == X86_VENDOR_INTEL) + if (m.cpuvendor == X86_VENDOR_INTEL || + m.cpuvendor == X86_VENDOR_ZHAOXIN || + m.cpuvendor == X86_VENDOR_CENTAUR) lmce = m.mcgstatus & MCG_STATUS_LMCES; /* @@ -1762,9 +1771,15 @@ static void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) } intel_init_cmci(); + intel_init_lmce(); mce_adjust_timer = cmci_intel_adjust_timer; } +static void mce_zhaoxin_feature_clear(struct cpuinfo_x86 *c) +{ + intel_clear_lmce(); +} + static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) { switch (c->x86_vendor) { @@ -1798,6 +1813,12 @@ static void __mcheck_cpu_clear_vendor(struct cpuinfo_x86 *c) case X86_VENDOR_INTEL: mce_intel_feature_clear(c); break; + + case X86_VENDOR_ZHAOXIN: + case X86_VENDOR_CENTAUR: + mce_zhaoxin_feature_clear(c); + break; + default: break; } diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c index 637780528380..3bc5d6d47178 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_intel.c +++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c @@ -445,7 +445,7 @@ void intel_init_cmci(void) cmci_recheck(); } -static void intel_init_lmce(void) +void intel_init_lmce(void) { u64 val; @@ -458,7 +458,7 @@ static void intel_init_lmce(void) wrmsrl(MSR_IA32_MCG_EXT_CTL, val | MCG_EXT_CTL_LMCE_EN); } -static void intel_clear_lmce(void) +void intel_clear_lmce(void) { u64 val; -- 2.20.1

3 years, 1 month

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[patch v1 2/3] x86/mce: Add Zhaoxin CMCI support

by LeoLiu-oc

commit 5a3d56a034be9e8e87a6cb9ed3f2928184db1417 upstream. All newer Zhaoxin CPUs support CMCI and are compatible with Intel's Machine-Check Architecture. Add that support for Zhaoxin CPUs. [ bp: Massage comments and export intel_init_cmci(). ] Signed-off-by: Tony W Wang-oc <TonyWWang-oc(a)zhaoxin.com> Signed-off-by: Borislav Petkov <bp(a)suse.de> Cc: CooperYan(a)zhaoxin.com Cc: DavidWang(a)zhaoxin.com Cc: HerryYang(a)zhaoxin.com Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: linux-edac <linux-edac(a)vger.kernel.org> Cc: QiyuanWang(a)zhaoxin.com Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Tony Luck <tony.luck(a)intel.com> Cc: x86-ml <x86(a)kernel.org> Link: https://lkml.kernel.org/r/1568787573-1297-4-git-send-email-TonyWWang-oc@zha… [ LeoLiu-oc: Add support for more Zhaoxin CPUs and adapt to the current MCE directory ] Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- arch/x86/kernel/cpu/mcheck/mce-internal.h | 2 ++ arch/x86/kernel/cpu/mcheck/mce.c | 30 ++++++++++++++--------- arch/x86/kernel/cpu/mcheck/mce_intel.c | 7 ++++-- 3 files changed, 26 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h index 91f6a7b30b1e..79936eaec14b 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-internal.h +++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h @@ -53,11 +53,13 @@ unsigned long cmci_intel_adjust_timer(unsigned long interval); bool mce_intel_cmci_poll(void); void mce_intel_hcpu_update(unsigned long cpu); void cmci_disable_bank(int bank); +void intel_init_cmci(void); #else # define cmci_intel_adjust_timer mce_adjust_timer_default static inline bool mce_intel_cmci_poll(void) { return false; } static inline void mce_intel_hcpu_update(unsigned long cpu) { } static inline void cmci_disable_bank(int bank) { } +static inline void intel_init_cmci(void) { } #endif void mce_timer_kick(unsigned long interval); diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 24e7f3fd0886..ace64069152d 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1743,19 +1743,26 @@ static void __mcheck_cpu_init_early(struct cpuinfo_x86 *c) } } -static void mce_centaur_feature_init(struct cpuinfo_x86 *c) +static void mce_zhaoxin_feature_init(struct cpuinfo_x86 *c) { struct mca_config *cfg = &mca_cfg; - - /* - * All newer Centaur CPUs support MCE broadcasting. Enable - * synchronization with a one second timeout. - */ - if ((c->x86 == 6 && c->x86_model == 0xf && c->x86_stepping >= 0xe) || - c->x86 > 6) { - if (cfg->monarch_timeout < 0) - cfg->monarch_timeout = USEC_PER_SEC; + /* + * These CPUs have MCA bank 8 which reports only one error type called + * SVAD (System View Address Decoder). The reporting of that error is + * controlled by IA32_MC8.CTL.0. + * + * If enabled, prefetching on these CPUs will cause SVAD MCE when + * virtual machines start and result in a system panic. Always disable + * bank 8 SVAD error by default. + */ + if ((c->x86 == 7 && c->x86_model == 0x1b) || + (c->x86_model == 0x19 || c->x86_model == 0x1f)) { + if (cfg->banks > 8) + mce_banks[8].ctl = 0; } + + intel_init_cmci(); + mce_adjust_timer = cmci_intel_adjust_timer; } static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) @@ -1776,7 +1783,8 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c) break; case X86_VENDOR_CENTAUR: - mce_centaur_feature_init(c); + case X86_VENDOR_ZHAOXIN: + mce_zhaoxin_feature_init(c); break; default: diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c index d05be307d081..637780528380 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_intel.c +++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c @@ -85,8 +85,11 @@ static int cmci_supported(int *banks) * initialization is vendor keyed and this * makes sure none of the backdoors are entered otherwise. */ - if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) + if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL && + boot_cpu_data.x86_vendor != X86_VENDOR_ZHAOXIN && + boot_cpu_data.x86_vendor != X86_VENDOR_CENTAUR) return 0; + if (!boot_cpu_has(X86_FEATURE_APIC) || lapic_get_maxlvt() < 6) return 0; rdmsrl(MSR_IA32_MCG_CAP, cap); @@ -423,7 +426,7 @@ void cmci_disable_bank(int bank) raw_spin_unlock_irqrestore(&cmci_discover_lock, flags); } -static void intel_init_cmci(void) +void intel_init_cmci(void) { int banks; -- 2.20.1

3 years, 1 month

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Cloud Kernel March 2021