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62 lines
2.4 KiB
62 lines
2.4 KiB
1 month ago
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From aeaa7061139202448d466b7e18682081f9cd2097 Mon Sep 17 00:00:00 2001
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From: Isaku Yamahata <isaku.yamahata@intel.com>
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Date: Thu, 29 Feb 2024 01:36:54 -0500
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Subject: [PATCH 035/100] kvm/tdx: Don't complain when converting vMMIO region
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to shared
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 245: SEV-SNP support
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RH-Jira: RHEL-39544
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Bandan Das <bdas@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Commit: [35/91] c42870771d7af5badc2e10d42be9b5620d72f95d (bonzini/rhel-qemu-kvm)
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Because vMMIO region needs to be shared region, guest TD may explicitly
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convert such region from private to shared. Don't complain such
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conversion.
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Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
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Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
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Message-ID: <20240229063726.610065-34-xiaoyao.li@intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit c5d9425ef4da9f43fc0903905ad415456d1ab843)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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accel/kvm/kvm-all.c | 19 ++++++++++++++++---
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1 file changed, 16 insertions(+), 3 deletions(-)
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diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
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index 09164e346c..6efaff90a7 100644
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--- a/accel/kvm/kvm-all.c
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+++ b/accel/kvm/kvm-all.c
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@@ -2927,9 +2927,22 @@ int kvm_convert_memory(hwaddr start, hwaddr size, bool to_private)
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}
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if (!memory_region_has_guest_memfd(mr)) {
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- error_report("Converting non guest_memfd backed memory region "
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- "(0x%"HWADDR_PRIx" ,+ 0x%"HWADDR_PRIx") to %s",
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- start, size, to_private ? "private" : "shared");
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+ /*
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+ * Because vMMIO region must be shared, guest TD may convert vMMIO
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+ * region to shared explicitly. Don't complain such case. See
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+ * memory_region_type() for checking if the region is MMIO region.
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+ */
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+ if (!to_private &&
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+ !memory_region_is_ram(mr) &&
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+ !memory_region_is_ram_device(mr) &&
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+ !memory_region_is_rom(mr) &&
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+ !memory_region_is_romd(mr)) {
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+ ret = 0;
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+ } else {
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+ error_report("Convert non guest_memfd backed memory region "
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+ "(0x%"HWADDR_PRIx" ,+ 0x%"HWADDR_PRIx") to %s",
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+ start, size, to_private ? "private" : "shared");
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+ }
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goto out_unref;
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}
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--
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2.39.3
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