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| author |  Michael Kelley <mikelley@microsoft.com>
| 2023-03-26 06:51:58 -0700 |
|---|---|---|
| committer |  Borislav Petkov (AMD) <bp@alien8.de>
| 2023-03-27 08:46:43 +0200 |
| commit | d33ddc92db8a61416473ff3d7f1c621c50733dc0 (patch) | |
| tree | 7f8576ed7407b86b82cfaba26e667d3bcc947b86 /arch/x86/hyperv/ivm.c | |
| parent | x86/hyperv: Reorder code to facilitate future work (diff) | |
| download | linux-d33ddc92db8a61416473ff3d7f1c621c50733dc0.tar.gz linux-d33ddc92db8a61416473ff3d7f1c621c50733dc0.tar.bz2 linux-d33ddc92db8a61416473ff3d7f1c621c50733dc0.zip | |
Drivers: hv: Explicitly request decrypted in vmap_pfn() calls
Update vmap_pfn() calls to explicitly request that the mapping
be for decrypted access to the memory. There's no change in
functionality since the PFNs passed to vmap_pfn() are above the
shared_gpa_boundary, implicitly producing a decrypted mapping.
But explicitly requesting "decrypted" allows the code to work
before and after changes that cause vmap_pfn() to mask the
PFNs to being below the shared_gpa_boundary.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/1679838727-87310-4-git-send-email-mikelley@microsoft.com
Diffstat (limited to 'arch/x86/hyperv/ivm.c')
| -rw-r--r-- | arch/x86/hyperv/ivm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index f33c67ef1b25..5648efb6c73e 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -343,7 +343,7 @@ void *hv_map_memory(void *addr, unsigned long size) pfns[i] = vmalloc_to_pfn(addr + i * PAGE_SIZE) + (ms_hyperv.shared_gpa_boundary >> PAGE_SHIFT); - vaddr = vmap_pfn(pfns, size / PAGE_SIZE, PAGE_KERNEL_IO); + vaddr = vmap_pfn(pfns, size / PAGE_SIZE, pgprot_decrypted(PAGE_KERNEL)); kfree(pfns); return vaddr; |