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authorLinus Torvalds <torvalds@linux-foundation.org>2023-04-25 20:48:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-04-25 20:48:08 +0300
commitbc1bb2a49bae915107fd58705edb1e32db92c635 (patch)
tree2b517448e60c76160452349ea14766ae309dfba0 /drivers/hv
parentc42b59bfaa0091833b6758be772c54ec7183daa5 (diff)
parent812b0597fb4043240724e4c7bed7ba1fe15c0e3f (diff)
downloadlinux-bc1bb2a49bae915107fd58705edb1e32db92c635.tar.xz
Merge tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov: - Add the necessary glue so that the kernel can run as a confidential SEV-SNP vTOM guest on Hyper-V. A vTOM guest basically splits the address space in two parts: encrypted and unencrypted. The use case being running unmodified guests on the Hyper-V confidential computing hypervisor - Double-buffer messages between the guest and the hardware PSP device so that no partial buffers are copied back'n'forth and thus potential message integrity and leak attacks are possible - Name the return value the sev-guest driver returns when the hw PSP device hasn't been called, explicitly - Cleanups * tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hyperv: Change vTOM handling to use standard coco mechanisms init: Call mem_encrypt_init() after Hyper-V hypercall init is done x86/mm: Handle decryption/re-encryption of bss_decrypted consistently Drivers: hv: Explicitly request decrypted in vmap_pfn() calls x86/hyperv: Reorder code to facilitate future work x86/ioremap: Add hypervisor callback for private MMIO mapping in coco VM x86/sev: Change snp_guest_issue_request()'s fw_err argument virt/coco/sev-guest: Double-buffer messages crypto: ccp: Get rid of __sev_platform_init_locked()'s local function pointer crypto: ccp - Name -1 return value as SEV_RET_NO_FW_CALL
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/ring_buffer.c2
-rw-r--r--drivers/hv/vmbus_drv.c1
2 files changed, 1 insertions, 2 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index c6692fd5ab15..2111e97c3b63 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -211,7 +211,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
ring_info->ring_buffer = (struct hv_ring_buffer *)
vmap_pfn(pfns_wraparound, page_cnt * 2 - 1,
- PAGE_KERNEL);
+ pgprot_decrypted(PAGE_KERNEL));
kfree(pfns_wraparound);
if (!ring_info->ring_buffer)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index d24dd65b33d4..e9e1c4139e0d 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2156,7 +2156,6 @@ void vmbus_device_unregister(struct hv_device *device_obj)
* VMBUS is an acpi enumerated device. Get the information we
* need from DSDT.
*/
-#define VTPM_BASE_ADDRESS 0xfed40000
static acpi_status vmbus_walk_resources(struct acpi_resource *res, void *ctx)
{
resource_size_t start = 0;