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| author | Singh, Brijesh <brijesh.singh@amd.com> | 2019-02-04 22:23:40 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-03-18 09:39:57 +0100 |
| commit | cedc0ad539afbbb669dba9e73dfad2915bc1c25b (patch) | |
| tree | 6a30f4e826caef075426512e0d6df704694ae8b8 /target/i386/sev.c | |
| parent | 2ddb89b00f947f785c9ca6742f28f954e3b75e62 (diff) | |
| download | qemu-cedc0ad539afbbb669dba9e73dfad2915bc1c25b.zip qemu-cedc0ad539afbbb669dba9e73dfad2915bc1c25b.tar.gz qemu-cedc0ad539afbbb669dba9e73dfad2915bc1c25b.tar.bz2 | |
target/i386: sev: Do not pin the ram device memory region
The RAM device presents a memory region that should be handled
as an IO region and should not be pinned.
In the case of the vfio-pci, RAM device represents a MMIO BAR
and the memory region is not backed by pages hence
KVM_MEMORY_ENCRYPT_REG_REGION fails to lock the memory range.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1667249
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Message-Id: <20190204222322.26766-3-brijesh.singh@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/sev.c')
| -rw-r--r-- | target/i386/sev.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target/i386/sev.c b/target/i386/sev.c index 20b2d32..cd77f6b 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -131,6 +131,17 @@ sev_ram_block_added(RAMBlockNotifier *n, void *host, size_t size) { int r; struct kvm_enc_region range; + ram_addr_t offset; + MemoryRegion *mr; + + /* + * The RAM device presents a memory region that should be treated + * as IO region and should not be pinned. + */ + mr = memory_region_from_host(host, &offset); + if (mr && memory_region_is_ram_device(mr)) { + return; + } range.addr = (__u64)(unsigned long)host; range.size = size; |