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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-06-06 11:56:20 +0200 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2023-06-06 20:07:01 +0200 |
| commit | 3f6819dd192ef4f0c568ec3e9d6d408b3fa1ad3d (patch) | |
| tree | cac1001bd35036ed5255a7b8338ae6d56d891120 /arch/x86/mm/pat | |
| parent | x86/tdx: Wrap exit reason with hcall_func() (diff) | |
| download | linux-3f6819dd192ef4f0c568ec3e9d6d408b3fa1ad3d.tar.xz linux-3f6819dd192ef4f0c568ec3e9d6d408b3fa1ad3d.zip | |
x86/mm: Allow guest.enc_status_change_prepare() to fail
TDX code is going to provide guest.enc_status_change_prepare() that is
able to fail. TDX will use the call to convert the GPA range from shared
to private. This operation can fail.
Add a way to return an error from the callback.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/all/20230606095622.1939-2-kirill.shutemov%40linux.intel.com
Diffstat (limited to 'arch/x86/mm/pat')
| -rw-r--r-- | arch/x86/mm/pat/set_memory.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 7159cf787613..b8f48ebe753c 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -2151,7 +2151,8 @@ static int __set_memory_enc_pgtable(unsigned long addr, int numpages, bool enc) cpa_flush(&cpa, x86_platform.guest.enc_cache_flush_required()); /* Notify hypervisor that we are about to set/clr encryption attribute. */ - x86_platform.guest.enc_status_change_prepare(addr, numpages, enc); + if (!x86_platform.guest.enc_status_change_prepare(addr, numpages, enc)) + return -EIO; ret = __change_page_attr_set_clr(&cpa, 1); |