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From: Pu Wen <puwen@hygon.cn>
To: xen-devel@lists.xenproject.org
Cc: Pu Wen <puwen@hygon.cn>, Ian Jackson <ian.jackson@eu.citrix.com>,
	Wei Liu <wei.liu2@citrix.com>
Subject: [PATCH v3 14/14] tools/libxc: Add Hygon Dhyana support
Date: Mon, 25 Mar 2019 21:32:27 +0800	[thread overview]
Message-ID: <18a86cd5e6dc0d6580eff0e5960c25b2eef21c53.1553520193.git.puwen@hygon.cn> (raw)
In-Reply-To: <cover.1553520193.git.puwen@hygon.cn>

Add Hygon Dhyana support to caculate the cpuid policies for creating PV
or HVM guest by using the code path of AMD.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
 tools/libxc/xc_cpuid_x86.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/tools/libxc/xc_cpuid_x86.c b/tools/libxc/xc_cpuid_x86.c
index 098affe..d0cb9ae 100644
--- a/tools/libxc/xc_cpuid_x86.c
+++ b/tools/libxc/xc_cpuid_x86.c
@@ -234,6 +234,7 @@ struct cpuid_domain_info
         VENDOR_UNKNOWN,
         VENDOR_INTEL,
         VENDOR_AMD,
+        VENDOR_HYGON,
     } vendor;
 
     bool hvm;
@@ -304,6 +305,10 @@ static int get_cpuid_domain_info(xc_interface *xch, uint32_t domid,
               regs[2] == 0x444d4163U &&
               regs[3] == 0x69746e65U )
         info->vendor = VENDOR_AMD;
+    else if ( regs[1] == 0x6f677948U && /* "HygonGenuine" */
+              regs[2] == 0x656e6975U &&
+              regs[3] == 0x6e65476eU )
+        info->vendor = VENDOR_HYGON;
     else
         info->vendor = VENDOR_UNKNOWN;
 
@@ -568,7 +573,8 @@ static void xc_cpuid_hvm_policy(const struct cpuid_domain_info *info,
         break;
     }
 
-    if ( info->vendor == VENDOR_AMD )
+    if ( info->vendor == VENDOR_AMD ||
+         info->vendor == VENDOR_HYGON )
         amd_xc_cpuid_policy(info, input, regs);
     else
         intel_xc_cpuid_policy(info, input, regs);
@@ -630,7 +636,8 @@ static void xc_cpuid_pv_policy(const struct cpuid_domain_info *info,
 
     case 0x80000000:
     {
-        unsigned int max = info->vendor == VENDOR_AMD
+        unsigned int max = (info->vendor == VENDOR_AMD||
+                            info->vendor == VENDOR_HYGON)
             ? DEF_MAX_AMDEXT : DEF_MAX_INTELEXT;
 
         if ( regs[0] > max )
@@ -736,7 +743,8 @@ static void sanitise_featureset(struct cpuid_domain_info *info)
         if ( !info->pv64 )
         {
             clear_bit(X86_FEATURE_LM, info->featureset);
-            if ( info->vendor != VENDOR_AMD )
+            if ( info->vendor != VENDOR_AMD &&
+                 info->vendor != VENDOR_HYGON )
                 clear_bit(X86_FEATURE_SYSCALL, info->featureset);
         }
 
@@ -787,7 +795,7 @@ int xc_cpuid_apply_policy(xc_interface *xch, uint32_t domid,
     input[0] = 0x80000000;
     cpuid(input, regs);
 
-    if ( info.vendor == VENDOR_AMD )
+    if ( info.vendor == VENDOR_AMD || info.vendor == VENDOR_HYGON )
         ext_max = (regs[0] <= DEF_MAX_AMDEXT) ? regs[0] : DEF_MAX_AMDEXT;
     else
         ext_max = (regs[0] <= DEF_MAX_INTELEXT) ? regs[0] : DEF_MAX_INTELEXT;
-- 
2.7.4


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      parent reply	other threads:[~2019-03-25 13:41 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-25 13:29 [PATCH v3 00/14] Add support for Hygon Dhyana Family 18h processor Pu Wen
2019-03-25 13:29 ` [PATCH v3 01/14] x86/cpu: Create Hygon Dhyana architecture support file Pu Wen
2019-03-26 15:48   ` Jan Beulich
2019-03-27  8:14     ` Pu Wen
2019-03-27  8:30       ` Jan Beulich
2019-03-27 10:08         ` Pu Wen
2019-03-25 13:30 ` [PATCH v3 02/14] x86/cpu/mtrr: Add Hygon Dhyana support to get TOP_MEM2 Pu Wen
2019-03-25 13:30 ` [PATCH v3 03/14] x86/cpu/vpmu: Add Hygon Dhyana and AMD Zen support for vPMU Pu Wen
2019-03-26 16:10   ` Jan Beulich
2019-03-27  8:16     ` Pu Wen
2019-03-27  8:37       ` Jan Beulich
2019-03-27 10:08         ` Pu Wen
2019-03-25 13:30 ` [PATCH v3 04/14] x86/cpu/mce: Add Hygon Dhyana support to the MCA infrastructure Pu Wen
2019-03-25 13:30 ` [PATCH v3 05/14] x86/spec_ctrl: Add Hygon Dhyana to the respective mitigation machinery Pu Wen
2019-03-25 13:30 ` [PATCH v3 06/14] x86/apic: Add Hygon Dhyana support Pu Wen
2019-03-25 13:30 ` [PATCH v3 07/14] x86/acpi: " Pu Wen
2019-03-25 13:31 ` [PATCH v3 08/14] x86/iommu: " Pu Wen
2019-03-25 13:31 ` [PATCH v3 09/14] x86/pv: Add Hygon Dhyana support to emulate MSRs access Pu Wen
2019-03-25 13:31 ` [PATCH v3 10/14] x86/domain: Add Hygon Dhyana support Pu Wen
2019-03-25 13:31 ` [PATCH v3 11/14] x86/domctl: " Pu Wen
2019-03-25 13:31 ` [PATCH v3 12/14] x86/traps: " Pu Wen
2019-03-25 13:32 ` [PATCH v3 13/14] x86/cpuid: " Pu Wen
2019-03-25 13:32 ` Pu Wen [this message]

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