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| author |   Brijesh Singh <brijesh.singh@amd.com> | 2022-02-24 10:56:01 -0600 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-04-06 13:24:53 +0200 |
| commit | dc3f3d2474b80eaee8be89f4c5eb344f10648f42 (patch) | |
| tree | 2c72a1701916d2288f5703f123a0f83c2761bc8f /arch/x86/include/uapi | |
| parent | x86/kernel: Validate ROM memory before accessing when SEV-SNP is active (diff) | |
| download | linux-dev-dc3f3d2474b80eaee8be89f4c5eb344f10648f42.tar.xz linux-dev-dc3f3d2474b80eaee8be89f4c5eb344f10648f42.zip | |
x86/mm: Validate memory when changing the C-bit
Add the needed functionality to change pages state from shared
to private and vice-versa using the Page State Change VMGEXIT as
documented in the GHCB spec.
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220307213356.2797205-22-brijesh.singh@amd.com
Diffstat (limited to 'arch/x86/include/uapi')
| -rw-r--r-- | arch/x86/include/uapi/asm/svm.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/svm.h b/arch/x86/include/uapi/asm/svm.h index b0ad00f4c1e1..64404b47b773 100644 --- a/arch/x86/include/uapi/asm/svm.h +++ b/arch/x86/include/uapi/asm/svm.h @@ -108,6 +108,7 @@ #define SVM_VMGEXIT_AP_JUMP_TABLE 0x80000005 #define SVM_VMGEXIT_SET_AP_JUMP_TABLE 0 #define SVM_VMGEXIT_GET_AP_JUMP_TABLE 1 +#define SVM_VMGEXIT_PSC 0x80000010 #define SVM_VMGEXIT_HV_FEATURES 0x8000fffd #define SVM_VMGEXIT_UNSUPPORTED_EVENT 0x8000ffff @@ -219,6 +220,7 @@ { SVM_VMGEXIT_NMI_COMPLETE, "vmgexit_nmi_complete" }, \ { SVM_VMGEXIT_AP_HLT_LOOP, "vmgexit_ap_hlt_loop" }, \ { SVM_VMGEXIT_AP_JUMP_TABLE, "vmgexit_ap_jump_table" }, \ + { SVM_VMGEXIT_PSC, "vmgexit_page_state_change" }, \ { SVM_VMGEXIT_HV_FEATURES, "vmgexit_hypervisor_feature" }, \ { SVM_EXIT_ERR, "invalid_guest_state" } |