[Xen-devel] [PATCH v5 04/10] x86/domain: remove the 's3_integrity' flag

[Paul Durrant <paul.durrant@xxxxxxxxxx>]

The flag is not needed since the domain 'options' can now be tested
directly.

Signed-off-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
Reviewed-by: "Roger Pau Monné" <roger.pau@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Cc: Wei Liu <wl@xxxxxxx>

v4:
 - s/TBOOT/CONFIG_TBOOT/g

v3:
 - Also sanitise the flag against CONFIG_TBOOT being set
---
 xen/arch/x86/domain.c        | 9 +++++++--
 xen/arch/x86/setup.c         | 2 +-
 xen/arch/x86/tboot.c         | 2 +-
 xen/include/asm-x86/domain.h | 2 --
 4 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index bc0db03387..f144d8fe9a 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -466,6 +466,13 @@ int arch_sanitise_domain_config(struct 
xen_domctl_createdomain *config)
         return -EINVAL;
     }
 
+    if ( (config->flags & XEN_DOMCTL_CDF_s3_integrity) &&
+         !IS_ENABLED(CONFIG_TBOOT) )
+    {
+        dprintk(XENLOG_INFO, "S3 integrity check not valid without 
CONFIG_TBOOT\n");
+        return -EINVAL;
+    }
+
     return 0;
 }
 
@@ -544,8 +551,6 @@ int arch_domain_create(struct domain *d,
                d->domain_id);
     }
 
-    d->arch.s3_integrity = config->flags & XEN_DOMCTL_CDF_s3_integrity;
-
     emflags = config->arch.emulation_flags;
 
     if ( is_hardware_domain(d) && is_pv_domain(d) )
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index 87fc7c90da..d0b35b0ce2 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -696,7 +696,7 @@ void __init noreturn __start_xen(unsigned long mbi_p)
         .stop_bits = 1
     };
     struct xen_domctl_createdomain dom0_cfg = {
-        .flags = XEN_DOMCTL_CDF_s3_integrity,
+        .flags = IS_ENABLED(CONFIG_TBOOT) ? XEN_DOMCTL_CDF_s3_integrity : 0,
         .max_evtchn_port = -1,
         .max_grant_frames = opt_max_grant_frames,
         .max_maptrack_frames = opt_max_maptrack_frames,
diff --git a/xen/arch/x86/tboot.c b/xen/arch/x86/tboot.c
index f3fdee4d39..3db8a8a8d8 100644
--- a/xen/arch/x86/tboot.c
+++ b/xen/arch/x86/tboot.c
@@ -212,7 +212,7 @@ static void tboot_gen_domain_integrity(const uint8_t 
key[TB_KEY_SIZE],
     vmac_set_key((uint8_t *)key, &ctx);
     for_each_domain( d )
     {
-        if ( !d->arch.s3_integrity )
+        if ( !(d->options & XEN_DOMCTL_CDF_s3_integrity) )
             continue;
         printk("MACing Domain %u\n", d->domain_id);
 
diff --git a/xen/include/asm-x86/domain.h b/xen/include/asm-x86/domain.h
index 5f9899469c..5c038a1065 100644
--- a/xen/include/asm-x86/domain.h
+++ b/xen/include/asm-x86/domain.h
@@ -295,8 +295,6 @@ struct arch_domain
     uint32_t pci_cf8;
     uint8_t cmos_idx;
 
-    bool_t s3_integrity;
-
     union {
         struct pv_domain pv;
         struct hvm_domain hvm;
-- 
2.20.1.2.gb21ebb671


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