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authorJakub Kicinski <kuba@kernel.org>2023-12-07 17:47:58 -0800
committerJakub Kicinski <kuba@kernel.org>2023-12-07 17:53:17 -0800
commit2483e7f04ce0e97c69b27d28ebce7a2320b7a7a6 (patch)
treea45d2e6897a32eaee4b6a5b3b84617d5ca52f4b2 /arch/x86/mm/mem_encrypt_amd.c
parent87e839c82cc36346a2cd183ca941316902110716 (diff)
parent5e3f5b81de80c98338bcb47c233aebefee5a4801 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/stmicro/stmmac/dwmac5.c drivers/net/ethernet/stmicro/stmmac/dwmac5.h drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c drivers/net/ethernet/stmicro/stmmac/hwif.h 37e4b8df27bc ("net: stmmac: fix FPE events losing") c3f3b97238f6 ("net: stmmac: Refactor EST implementation") https://lore.kernel.org/all/20231206110306.01e91114@canb.auug.org.au/ Adjacent changes: net/ipv4/tcp_ao.c 9396c4ee93f9 ("net/tcp: Don't store TCP-AO maclen on reqsk") 7b0f570f879a ("tcp: Move TCP-AO bits from cookie_v[46]_check() to tcp_ao_syncookie().") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/x86/mm/mem_encrypt_amd.c')
-rw-r--r--arch/x86/mm/mem_encrypt_amd.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index a68f2dda0948..70b91de2e053 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -32,6 +32,7 @@
#include <asm/msr.h>
#include <asm/cmdline.h>
#include <asm/sev.h>
+#include <asm/ia32.h>
#include "mm_internal.h"
@@ -481,6 +482,16 @@ void __init sme_early_init(void)
*/
if (sev_status & MSR_AMD64_SEV_ES_ENABLED)
x86_cpuinit.parallel_bringup = false;
+
+ /*
+ * The VMM is capable of injecting interrupt 0x80 and triggering the
+ * compatibility syscall path.
+ *
+ * By default, the 32-bit emulation is disabled in order to ensure
+ * the safety of the VM.
+ */
+ if (sev_status & MSR_AMD64_SEV_ENABLED)
+ ia32_disable();
}
void __init mem_encrypt_free_decrypted_mem(void)