Re: [PATCH Part1 RFC v4 02/36] x86/sev: Save the negotiated GHCB version

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 8/10/21 4:17 AM, Borislav Petkov wrote:
On Wed, Jul 07, 2021 at 01:14:32PM -0500, Brijesh Singh wrote:
diff --git a/arch/x86/kernel/sev-shared.c b/arch/x86/kernel/sev-shared.c
index 114f62fe2529..19c2306ac02d 100644
--- a/arch/x86/kernel/sev-shared.c
+++ b/arch/x86/kernel/sev-shared.c
@@ -14,6 +14,15 @@
  #define has_cpuflag(f)	boot_cpu_has(f)
  #endif
+/*
+ * Since feature negotiation related variables are set early in the boot
+ * process they must reside in the .data section so as not to be zeroed
+ * out when the .bss section is later cleared.
+ *
+ * GHCB protocol version negotiated with the hypervisor.
+ */
+static u16 ghcb_version __section(".data..ro_after_init");

There's a define for that section specifier: __ro_after_init


Noted.

thanks



[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux