Re: [Resend RFC PATCH V4 13/13] x86/HV: Not set memory decrypted/encrypted during kexec alloc/free page in IVM
From: Dave Hansen <hidden>
Date: 2021-07-07 16:14:37
Also in:
linux-hyperv, linux-iommu, linux-scsi, lkml, netdev, xen-devel
On 7/7/21 8:46 AM, Tianyu Lan wrote:
quoted hunk ↗ jump to hunk
@@ -598,7 +599,7 @@ void arch_kexec_unprotect_crashkres(void) */ int arch_kexec_post_alloc_pages(void *vaddr, unsigned int pages, gfp_t gfp) { - if (sev_active()) + if (sev_active() || hv_is_isolation_supported()) return 0; /*@@ -611,7 +612,7 @@ int arch_kexec_post_alloc_pages(void *vaddr, unsigned int pages, gfp_t gfp) void arch_kexec_pre_free_pages(void *vaddr, unsigned int pages) { - if (sev_active()) + if (sev_active() || hv_is_isolation_supported()) return;
You might want to take a look through the "protected guest" patches. I think this series is touching a few of the same locations that TDX and recent SEV work touch. https://lore.kernel.org/lkml/20210618225755.662725-5-sathyanarayanan.kuppuswamy@linux.intel.com/ (local)