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[Stable-8.1.2 19/45] hw/arm/boot: Set SCR_EL3.FGTEn when booting kernel
From: |
Michael Tokarev |
Subject: |
[Stable-8.1.2 19/45] hw/arm/boot: Set SCR_EL3.FGTEn when booting kernel |
Date: |
Wed, 4 Oct 2023 11:01:40 +0300 |
From: Fabian Vogt <fvogt@suse.de>
Just like d7ef5e16a17c sets SCR_EL3.HXEn for FEAT_HCX, this commit
handles SCR_EL3.FGTEn for FEAT_FGT:
When we direct boot a kernel on a CPU which emulates EL3, we need to
set up the EL3 system registers as the Linux kernel documentation
specifies:
https://www.kernel.org/doc/Documentation/arm64/booting.rst
> For CPUs with the Fine Grained Traps (FEAT_FGT) extension present:
> - If EL3 is present and the kernel is entered at EL2:
> - SCR_EL3.FGTEn (bit 27) must be initialised to 0b1.
Cc: qemu-stable@nongnu.org
Signed-off-by: Fabian Vogt <fvogt@suse.de>
Message-id: 4831384.GXAFRqVoOG@linux-e202.suse.de
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit 32b214384e1e1472ddfa875196c57f6620172301)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/hw/arm/boot.c b/hw/arm/boot.c
index 720f22531a..24fa169060 100644
--- a/hw/arm/boot.c
+++ b/hw/arm/boot.c
@@ -761,6 +761,10 @@ static void do_cpu_reset(void *opaque)
if (cpu_isar_feature(aa64_hcx, cpu)) {
env->cp15.scr_el3 |= SCR_HXEN;
}
+ if (cpu_isar_feature(aa64_fgt, cpu)) {
+ env->cp15.scr_el3 |= SCR_FGTEN;
+ }
+
/* AArch64 kernels never boot in secure mode */
assert(!info->secure_boot);
/* This hook is only supported for AArch32 currently:
--
2.39.2
- [Stable-8.1.2 07/45] hw/ppc: Reset timebase facilities on machine reset, (continued)
- [Stable-8.1.2 07/45] hw/ppc: Reset timebase facilities on machine reset, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 10/45] linux-user/hppa: lock both words of function descriptor, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 15/45] file-posix: Fix zone update in I/O error path, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 14/45] file-posix: Check bs->bl.zoned for zone info, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 12/45] hw/cxl: Fix out of bound array access, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 09/45] linux-user/hppa: clear the PSW 'N' bit when delivering signals, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 05/45] target/ppc: Sign-extend large decrementer to 64-bits, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 06/45] hw/ppc: Always store the decrementer value, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 24/45] ui/vnc: fix debug output for invalid audio message, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 27/45] migration: Fix possible race when setting rp_state.error, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 19/45] hw/arm/boot: Set SCR_EL3.FGTEn when booting kernel,
Michael Tokarev <=
- [Stable-8.1.2 20/45] target/arm: Don't skip MTE checks for LDRT/STRT at EL0, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 21/45] meson.build: Make keyutils independent from keyring, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 23/45] hw/scsi/scsi-disk: Disallow block sizes smaller than 512 [CVE-2023-42467], Michael Tokarev, 2023/10/04
- [Stable-8.1.2 18/45] include/exec: Widen tlb_hit/tlb_hit_page(), Michael Tokarev, 2023/10/04
- [Stable-8.1.2 25/45] ui/vnc: fix handling of VNC_FEATURE_XVP, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 26/45] migration: Fix race that dest preempt thread close too early, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 17/45] tests/file-io-error: New test, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 22/45] accel/tcg: mttcg remove false-negative halted assertion, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 29/45] migration: Fix possible race when shutting down to_dst_file, Michael Tokarev, 2023/10/04
- [Stable-8.1.2 30/45] migration: Remove redundant cleanup of postcopy_qemufile_src, Michael Tokarev, 2023/10/04