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From: David Gibson <david@gibson.dropbear.id.au>
To: dgilbert@redhat.com, frankja@linux.ibm.com, pair@us.redhat.com,
	qemu-devel@nongnu.org, brijesh.singh@amd.com
Cc: kvm@vger.kernel.org, qemu-ppc@nongnu.org,
	David Gibson <david@gibson.dropbear.id.au>,
	Richard Henderson <rth@twiddle.net>,
	cohuck@redhat.com, Paolo Bonzini <pbonzini@redhat.com>,
	Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Eduardo Habkost <ehabkost@redhat.com>,
	qemu-devel@nongnu.-rg, mdroth@linux.vnet.ibm.com
Subject: [RFC 06/18] target/i386: sev: Remove redundant cbitpos and reduced_phys_bits fields
Date: Thu, 14 May 2020 16:41:08 +1000	[thread overview]
Message-ID: <20200514064120.449050-7-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20200514064120.449050-1-david@gibson.dropbear.id.au>

The SEVState structure has cbitpos and reduced_phys_bits fields which are
simply copied from the SevGuestState structure and never changed.  Now that
SEVState is embedded in SevGuestState we can just access the original copy
directly.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target/i386/sev.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 5f0c38da95..c85f59d78f 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -41,8 +41,6 @@ struct SEVState {
     uint8_t build_id;
     uint32_t policy;
     uint64_t me_mask;
-    uint32_t cbitpos;
-    uint32_t reduced_phys_bits;
     uint32_t handle;
     int sev_fd;
     SevState state;
@@ -381,13 +379,13 @@ sev_get_me_mask(void)
 uint32_t
 sev_get_cbit_position(void)
 {
-    return sev_guest ? sev_guest->state.cbitpos : 0;
+    return sev_guest ? sev_guest->cbitpos : 0;
 }
 
 uint32_t
 sev_get_reduced_phys_bits(void)
 {
-    return sev_guest ? sev_guest->state.reduced_phys_bits : 0;
+    return sev_guest ? sev_guest->reduced_phys_bits : 0;
 }
 
 SevInfo *
@@ -716,22 +714,19 @@ sev_guest_init(const char *id)
     host_cpuid(0x8000001F, 0, NULL, &ebx, NULL, NULL);
     host_cbitpos = ebx & 0x3f;
 
-    s->cbitpos = object_property_get_int(OBJECT(sev), "cbitpos", NULL);
-    if (host_cbitpos != s->cbitpos) {
+    if (host_cbitpos != sev->cbitpos) {
         error_report("%s: cbitpos check failed, host '%d' requested '%d'",
-                     __func__, host_cbitpos, s->cbitpos);
+                     __func__, host_cbitpos, sev->cbitpos);
         goto err;
     }
 
-    s->reduced_phys_bits = object_property_get_int(OBJECT(sev),
-                                        "reduced-phys-bits", NULL);
-    if (s->reduced_phys_bits < 1) {
+    if (sev->reduced_phys_bits < 1) {
         error_report("%s: reduced_phys_bits check failed, it should be >=1,"
-                     " requested '%d'", __func__, s->reduced_phys_bits);
+                     " requested '%d'", __func__, sev->reduced_phys_bits);
         goto err;
     }
 
-    s->me_mask = ~(1UL << s->cbitpos);
+    s->me_mask = ~(1UL << sev->cbitpos);
 
     devname = object_property_get_str(OBJECT(sev), "sev-device", NULL);
     s->sev_fd = open(devname, O_RDWR);
-- 
2.26.2


  parent reply	other threads:[~2020-05-14  6:41 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-14  6:41 [RFC 00/18] Refactor configuration of guest memory protection David Gibson
2020-05-14  6:41 ` [RFC 01/18] target/i386: sev: Remove unused QSevGuestInfoClass David Gibson
2020-05-14  6:41 ` [RFC 02/18] target/i386: sev: Move local structure definitions into .c file David Gibson
2020-05-14  6:41 ` [RFC 03/18] target/i386: sev: Rename QSevGuestInfo David Gibson
2020-05-14  6:41 ` [RFC 04/18] target/i386: sev: Embed SEVState in SevGuestState David Gibson
2020-05-14  6:41 ` [RFC 05/18] target/i386: sev: Partial cleanup to sev_state global David Gibson
2020-05-14  6:41 ` David Gibson [this message]
2020-05-14  6:41 ` [RFC 07/18] target/i386: sev: Remove redundant policy field David Gibson
2020-05-14  6:41 ` [RFC 08/18] target/i386: sev: Remove redundant handle field David Gibson
2020-05-14  6:41 ` [RFC 09/18] target/i386: sev: Unify SEVState and SevGuestState David Gibson
2020-05-14  6:41 ` [RFC 10/18] guest memory protection: Add guest memory protection interface David Gibson
2020-05-14  6:41 ` [RFC 11/18] guest memory protection: Handle memory encrption via interface David Gibson
2020-05-14  6:41 ` [RFC 12/18] guest memory protection: Perform KVM init " David Gibson
2020-05-14  6:41 ` [RFC 13/18] guest memory protection: Move side effect out of machine_set_memory_encryption() David Gibson
2020-05-14  6:41 ` [RFC 14/18] guest memory protection: Rework the "memory-encryption" property David Gibson
2020-05-14  6:41 ` [RFC 15/18] guest memory protection: Decouple kvm_memcrypt_*() helpers from KVM David Gibson
2020-05-14  6:41 ` [RFC 16/18] use errp for gmpo kvm_init David Gibson
2020-05-14 17:09   ` Dr. David Alan Gilbert
2020-05-15  0:14     ` David Gibson
2020-05-15  0:20     ` David Gibson
2020-05-14  6:41 ` [RFC 17/18] spapr: Added PEF based guest memory protection David Gibson
2020-05-14  6:41 ` [RFC 18/18] guest memory protection: Alter virtio default properties for protected guests David Gibson

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